如何让faster-rcnn代码兼容maskrcnn的pytorch版本，并不用tf？

[518789Adf]

有代码，以下是maskrcnn在这个基代码的实现：
class MaskRCNNHead(nn.Module):
def init(self, n_class, roi_size, spatial_scale, num_convs=4, conv_dim=256, mask_out_dim=28):
super(MaskRCNNHead, self).init()

    self.n_class = n_class
    self.roi_size = roi_size
    self.spatial_scale = spatial_scale
    
    # 定义用于预测分割掩模的卷积层
    self.conv_layers = nn.Sequential(*[
        nn.Conv2d(256, conv_dim, kernel_size=3, padding=1),
        nn.ReLU(inplace=True)
    ] * num_convs)

    # 最后一层用于预测每个类别的掩模
    self.mask_pred = nn.Conv2d(conv_dim, n_class, kernel_size=1)

    # 初始化权重
    for m in self.modules():
        if isinstance(m, nn.Conv2d):
            nn.init.normal_(m.weight, mean=0, std=0.01)
            nn.init.constant_(m.bias, 0)

def forward(self, features, rois, roi_indices, img_size):
    # 对特征图中的每个ROI进行裁剪
    roi_features = []
    for i, roi in enumerate(rois):
        roi_feature = roi_pooling(features, roi, roi_indices[i], self.roi_size, self.spatial_scale)
        roi_features.append(roi_feature)

    # 将裁剪后的特征堆叠起来
    roi_features = torch.stack(roi_features, dim=0)
    
    # 通过卷积层预测掩模
    x = self.conv_layers(roi_features)
    mask_logits = self.mask_pred(x)
    
    # 将输出调整到原始图像大小
    masks = []
    for i, roi in enumerate(rois):
        mask = mask_logits[i]
        mask = torch.sigmoid(mask)  # 将logits转换为概率
        mask = F.interpolate(mask.unsqueeze(0), size=img_size, mode='bilinear', align_corners=False).squeeze(0)
        masks.append(mask)
    
    # 返回预测的掩模
    return masks

def roi_pooling(features, roi, roi_index, roi_size, spatial_scale):
# 假设roi_pooling是一个已经定义好的函数，用于从特征图中裁剪出对应ROI的部分
# 并进行池化操作以得到固定大小的输出
# 这里我们简化处理，直接使用ROIAlign
roi_align = torchvision.ops.RoIAlign((roi_size, roi_size), spatial_scale, sampling_ratio=2)
pooled_roi = roi_align(features, torch.tensor([roi], device=features.device))
return pooled_roi
还有就是，再建立一个文件maskrcnn.py：
import torch.nn as nn

from nets.classifier import Resnet50RoIHead, VGG16RoIHead, MaskRCNNHead
from nets.resnet50 import resnet50
from nets.rpn import RegionProposalNetwork
from nets.vgg16 import decom_vgg16

class MaskRCNN():
def init(self, num_classes,
mode = "training",
feat_stride = 16,
anchor_scales = [8, 16, 32],
ratios = [0.5, 1, 2],
backbone = 'vgg',
pretrained = False):
super(MaskRCNN, self).init()
self.feat_stride = feat_stride
#---------------------------------#
# 一共存在两个主干
# vgg和resnet50
#---------------------------------#
if backbone == 'vgg':
self.extractor, classifier = decom_vgg16(pretrained)
#---------------------------------#
# 构建建议框网络
#---------------------------------#
self.rpn = RegionProposalNetwork(
512, 512,
ratios = ratios,
anchor_scales = anchor_scales,
feat_stride = self.feat_stride,
mode = mode
)
#---------------------------------#
# 构建分类器网络
#---------------------------------#
self.head = VGG16RoIHead(
n_class = num_classes + 1,
roi_size = 7,
spatial_scale = 1,
classifier = classifier
)
self.mask_head = MaskRCNNHead(
n_class=num_classes + 1,
roi_size=14,
spatial_scale=1
)
elif backbone == 'resnet50':
self.extractor, classifier = resnet50(pretrained)
#---------------------------------#
# 构建classifier网络
#---------------------------------#
self.rpn = RegionProposalNetwork(
1024, 512,
ratios = ratios,
anchor_scales = anchor_scales,
feat_stride = self.feat_stride,
mode = mode
)
#---------------------------------#
# 构建classifier网络
#---------------------------------#
self.head = Resnet50RoIHead(
n_class = num_classes + 1,
roi_size = 14,
spatial_scale = 1,
classifier = classifier
)
self.mask_head = MaskRCNNHead(
n_class=num_classes + 1,
roi_size=14,
spatial_scale=1
)

def forward(self, x, scale=1., mode="forward"):
    if mode == "forward":
        #---------------------------------#
        #   计算输入图片的大小
        #---------------------------------#
        img_size        = x.shape[2:]
        #---------------------------------#
        #   利用主干网络提取特征
        #---------------------------------#
        base_feature    = self.extractor.forward(x)

        #---------------------------------#
        #   获得建议框
        #---------------------------------#
        _, _, rois, roi_indices, _  = self.rpn.forward(base_feature, img_size, scale)
        #---------------------------------------#
        #   获得classifier的分类结果和回归结果
        #---------------------------------------#
        roi_cls_locs, roi_scores    = self.head.forward(base_feature, rois, roi_indices, img_size)
        return roi_cls_locs, roi_scores, rois, roi_indices
    elif mode == "extractor":
        #---------------------------------#
        #   利用主干网络提取特征
        #---------------------------------#
        base_feature    = self.extractor.forward(x)
        return base_feature
    elif mode == "rpn":
        base_feature, img_size = x
        #---------------------------------#
        #   获得建议框
        #---------------------------------#
        rpn_locs, rpn_scores, rois, roi_indices, anchor = self.rpn.forward(base_feature, img_size, scale)
        return rpn_locs, rpn_scores, rois, roi_indices, anchor
    elif mode == "head":
        base_feature, rois, roi_indices, img_size = x
        #---------------------------------------#
        #   获得classifier的分类结果和回归结果
        #---------------------------------------#
        roi_cls_locs, roi_scores    = self.head.forward(base_feature, rois, roi_indices, img_size)
        return roi_cls_locs, roi_scores
    elif mode == "mask_head":
        base_feature, rois, roi_indices, img_size = x
        roi_masks = self.mask_head.forward(base_feature, rois, roi_indices, img_size)
        return roi_masks

def freeze_bn(self):
    for m in self.modules():
        if isinstance(m, nn.BatchNorm2d):
            m.eval()

即可完成maskrcnn的训练功能！

[518789Adf]

class MaskRcnnDataset(Dataset):
def init(self, annotation_lines, input_shape=[600, 600], train=True):
self.annotation_lines = annotation_lines
self.length = len(annotation_lines)
self.input_shape = input_shape
self.train = train

def __len__(self):
    return self.length

def __getitem__(self, index):
    index = index % self.length
    #---------------------------------------------------#
    #   训练时进行数据的随机增强
    #   验证时不进行数据的随机增强
    #---------------------------------------------------#
    image, y, masks = self.get_random_data(self.annotation_lines[index], self.input_shape[0:2], random=self.train)
    image = np.transpose(F.to_tensor(np.array(image, dtype=np.float32)), (2, 0, 1))
    
    box_data = np.zeros((len(y), 5))
    if len(y) > 0:
        box_data[:len(y)] = y
    box = box_data[:, :4]
    label = box_data[:, -1]

    # Convert masks to the correct format
    masks = [Image.fromarray(mask.astype(np.uint8)) for mask in masks]
    masks = [F.to_tensor(mask) for mask in masks]
    masks = torch.stack(masks, dim=0)

    return image, box, label, masks

def rand(self, a=0, b=1):
    return np.random.rand() * (b - a) + a

def get_random_data(self, annotation_line, input_shape, jitter=.3, hue=.1, sat=0.7, val=0.4, random=True):
    line = annotation_line.split()
    #------------------------------#
    #   读取图像并转换成RGB图像
    #------------------------------#
    image = Image.open(line[0])
    image = cvtColor(image)
    #------------------------------#
    #   获得图像的高宽与目标高宽
    #------------------------------#
    iw, ih = image.size
    h, w = input_shape
    #------------------------------#
    #   获得预测框
    #------------------------------#
    box = np.array([np.array(list(map(int, box.split(',')))) for box in line[1:]])
    #------------------------------#
    #   加载掩码数据
    #------------------------------#
    masks = [Image.open(line[i + 1]).convert('1') for i in range(len(box))]
    
    if not random:
        scale = min(w / iw, h / ih)
        nw = int(iw * scale)
        nh = int(ih * scale)
        dx = (w - nw) // 2
        dy = (h - nh) // 2
        
        # 将图像多余的部分加上灰条
        image = image.resize((nw, nh), Image.BICUBIC)
        new_image = Image.new('RGB', (w, h), (128, 128, 128))
        new_image.paste(image, (dx, dy))
        image_data = np.array(new_image, np.float32)
        
        # 对真实框进行调整
        if len(box) > 0:
            np.random.shuffle(box)
            box[:, [0, 2]] = box[:, [0, 2]] * nw / iw + dx
            box[:, [1, 3]] = box[:, [1, 3]] * nh / ih + dy
            
            # 对掩码进行调整
            masks = [mask.resize((nw, nh), Image.NEAREST) for mask in masks]
            masks = [np.pad(mask, ((0, h - nh), (0, w - nw)), mode='constant') for mask in masks]
            
            box[:, 0:2][box[:, 0:2] < 0] = 0
            box[:, 2][box[:, 2] > w] = w
            box[:, 3][box[:, 3] > h] = h
            box_w = box[:, 2] - box[:, 0]
            box_h = box[:, 3] - box[:, 1]
            box = box[np.logical_and(box_w > 1, box_h > 1)]  # discard invalid box
            masks = [mask for mask, b in zip(masks, box) if b[2] - b[0] > 1 and b[3] - b[1] > 1]
            
        return image_data, box, masks
    
    # 对图像进行缩放并且进行长和宽的扭曲
    new_ar = iw / ih * self.rand(1 - jitter, 1 + jitter) / self.rand(1 - jitter, 1 + jitter)
    scale = self.rand(.25, 2)
    if new_ar < 1:
        nh = int(scale * h)
        nw = int(nh * new_ar)
    else:
        nw = int(scale * w)
        nh = int(nw / new_ar)
    image = image.resize((nw, nh), Image.BICUBIC)
    
    # 将图像多余的部分加上灰条
    dx = int(self.rand(0, w - nw))
    dy = int(self.rand(0, h - nh))
    new_image = Image.new('RGB', (w, h), (128, 128, 128))
    new_image.paste(image, (dx, dy))
    image = new_image
    
    # 翻转图像
    flip = self.rand() < .5
    if flip:
        image = image.transpose(Image.FLIP_LEFT_RIGHT)
        masks = [mask.transpose(Image.FLIP_LEFT_RIGHT) for mask in masks]
    
    image_data = np.array(image, np.uint8)
    
    # 对图像进行色域变换
    r = np.random.uniform(-1, 1, 3) * [hue, sat, val] + 1
    # 将图像转到HSV上
    hue, sat, val = cv2.split(cv2.cvtColor(image_data, cv2.COLOR_RGB2HSV))
    dtype = image_data.dtype
    
    # 应用变换
    x = np.arange(0, 256, dtype=r.dtype)
    lut_hue = ((x * r[0]) % 180).astype(dtype)
    lut_sat = np.clip(x * r[1], 0, 255).astype(dtype)
    lut_val = np.clip(x * r[2], 0, 255).astype(dtype)
    image_data = cv2.merge((cv2.LUT(hue, lut_hue), cv2.LUT(sat, lut_sat), cv2.LUT(val, lut_val)))
    image_data = cv2.cvtColor(image_data, cv2.COLOR_HSV2RGB)
    
    # 对真实框进行调整
    if len(box) > 0:
        np.random.shuffle(box)
        box[:, [0, 2]] = box[:, [0, 2]] * nw / iw + dx
        box[:, [1, 3]] = box[:, [1, 3]] * nh / ih + dy
        if flip:
            box[:, [0, 2]] = w - box[:, [2, 0]]
        
        box[:, 0:2][box[:, 0:2] < 0] = 0
        box[:, 2][box[:, 2] > w] = w
        box[:, 3][box[:, 3] > h] = h
        box_w = box[:, 2] - box[:, 0]
        box_h = box[:, 3] - box[:, 1]
        box = box[np.logical_and(box_w > 1, box_h > 1)]
        
        # 对掩码进行调整
        masks = [mask.resize((nw, nh), Image.NEAREST) for mask in masks]
        masks = [np.pad(mask, ((0, h - nh), (0, w - nw)), mode='constant') for mask in masks]
        masks = [mask.transpose(Image.FLIP_LEFT_RIGHT) if flip else mask for mask in masks]
        masks = [mask for mask, b in zip(masks, box) if b[2] - b[0] > 1 and b[3] - b[1] > 1]
    
    return image_data, box, masks

[518789Adf]

注意，from torch.nn import functional as F加上这一句话防止.F报错未定义

[518789Adf]

import torch
import torch.nn as nn
import torch.nn.functional as F
from torch.cuda.amp import autocast

class MaskRCNNTrainer(nn.Module):
def init(self, model_train, optimizer):
super(MaskRCNNTrainer, self).init()
self.model_train = model_train
self.optimizer = optimizer
self.rpn_sigma = 1
self.roi_sigma = 1
self.anchor_target_creator = AnchorTargetCreator()
self.proposal_target_creator = ProposalTargetCreator()
self.loc_normalize_std = [0.1, 0.1, 0.2, 0.2]

def _fast_rcnn_loc_loss(self, pred_loc, gt_loc, gt_label, sigma):
    # ... (保持原样)

def forward(self, imgs, bboxes, labels, masks, scale):
    n = imgs.shape[0]
    img_size = imgs.shape[2:]
    #-#
    # 获取公用特征层
    #-#
    base_feature = self.model_train(imgs, mode='extractor')
    
    # - #
    # 利用rpn网络获得调整参数、得分、建议框、先验框
    # - #
    rpn_locs, rpn_scores, rois, roi_indices, anchor = self.model_train(x=[base_feature, img_size], scale=scale, mode='rpn')
    rpn_loc_loss_all, rpn_cls_loss_all, roi_loc_loss_all, roi_cls_loss_all, mask_loss_all = 0, 0, 0, 0, 0
    
    sample_rois, sample_indexes, gt_roi_locs, gt_roi_labels, gt_masks = [], [], [], [], []
    for i in range(n):
        bbox = bboxes[i]
        label = labels[i]
        mask = masks[i]
        rpn_loc = rpn_locs[i]
        rpn_score = rpn_scores[i]
        roi = rois[i]
        
        # - #
        # 利用真实框和先验框获得建议框网络应该有的预测结果
        # - #
        gt_rpn_loc, gt_rpn_label = self.anchor_target_creator(bbox, anchor[0].cpu().numpy())
        gt_rpn_loc = torch.Tensor(gt_rpn_loc).type_as(rpn_locs)
        gt_rpn_label = torch.Tensor(gt_rpn_label).type_as(rpn_locs).long()
        
        # - #
        # 分别计算建议框网络的回归损失和分类损失
        # - #
        rpn_loc_loss = self._fast_rcnn_loc_loss(rpn_loc, gt_rpn_loc, gt_rpn_label, self.rpn_sigma)
        rpn_cls_loss = F.cross_entropy(rpn_score, gt_rpn_label, ignore_index=-1)
        rpn_loc_loss_all += rpn_loc_loss
        rpn_cls_loss_all += rpn_cls_loss
        
        # - #
        # 利用真实框和建议框获得classifier网络应该有的预测结果
        # - #
        sample_roi, gt_roi_loc, gt_roi_label = self.proposal_target_creator(roi, bbox, label, self.loc_normalize_std)
        sample_rois.append(torch.Tensor(sample_roi).type_as(rpn_locs))
        sample_indexes.append(torch.ones(len(sample_roi)).type_as(rpn_locs) * roi_indices[i][0])
        gt_roi_locs.append(torch.Tensor(gt_roi_loc).type_as(rpn_locs))
        gt_roi_labels.append(torch.Tensor(gt_roi_label).type_as(rpn_locs).long())
        gt_masks.append(torch.Tensor(mask).type_as(rpn_locs))
        
    sample_rois = torch.stack(sample_rois, dim=0)
    sample_indexes = torch.stack(sample_indexes, dim=0)
    roi_cls_locs, roi_scores, roi_masks = self.model_train([base_feature, sample_rois, sample_indexes, img_size], mode='head')
    
    for i in range(n):
        # - #
        # 根据建议框的种类，取出对应的回归预测结果
        # - #
        n_sample = roi_cls_locs.size()[1]
        roi_cls_loc = roi_cls_locs[i]
        roi_score = roi_scores[i]
        roi_mask = roi_masks[i]
        gt_roi_loc = gt_roi_locs[i]
        gt_roi_label = gt_roi_labels[i]
        gt_mask = gt_masks[i]
        
        roi_cls_loc = roi_cls_loc.view(n_sample, -1, 4)
        roi_loc = roi_cls_loc[torch.arange(0, n_sample), gt_roi_label]
        
        # - #
        # 分别计算Classifier网络的回归损失和分类损失
        # - #
        roi_loc_loss = self._fast_rcnn_loc_loss(roi_loc, gt_roi_loc, gt_roi_label.data, self.roi_sigma)
        roi_cls_loss = nn.CrossEntropyLoss()(roi_score, gt_roi_label)
        roi_loc_loss_all += roi_loc_loss
        roi_cls_loss_all += roi_cls_loss
        
        # - #
        # 计算Mask损失
        # - #
        roi_mask = roi_mask[torch.arange(0, n_sample), gt_roi_label.unsqueeze(1), :, :]
        roi_mask_loss = F.binary_cross_entropy_with_logits(roi_mask, gt_mask, reduction='mean')
        mask_loss_all += roi_mask_loss
        
    losses = [rpn_loc_loss_all/n, rpn_cls_loss_all/n, roi_loc_loss_all/n, roi_cls_loss_all/n, mask_loss_all/n]
    losses = losses + [sum(losses)]
    return losses

def train_step(self, imgs, bboxes, labels, masks, scale, fp16=False, scaler=None):
    self.optimizer.zero_grad()
    if not fp16:
        losses = self.forward(imgs, bboxes, labels, masks, scale)
        losses[-1].backward()
        self.optimizer.step()
    else:
        with autocast():
            losses = self.forward(imgs, bboxes, labels, masks, scale)
        #-#
        # 反向传播
        #-#
        scaler.scale(losses[-1]).backward()
        scaler.step(self.optimizer)
        scaler.update()
    return losses

[518789Adf]

class MaskRCNNTrainer(nn.Module):
def init(self, model_train, optimizer):
super(MaskRCNNTrainer, self).init()
self.model_train = model_train
self.optimizer = optimizer
self.rpn_sigma = 1
self.roi_sigma = 1
self.anchor_target_creator = AnchorTargetCreator()
self.proposal_target_creator = ProposalTargetCreator()
self.loc_normalize_std = [0.1, 0.1, 0.2, 0.2]

def _fast_rcnn_loc_loss(self, pred_loc, gt_loc, gt_label, sigma):
    # ... (保持原样)
    pred_loc    = pred_loc[gt_label > 0]
    gt_loc      = gt_loc[gt_label > 0]

    sigma_squared = sigma ** 2
    regression_diff = (gt_loc - pred_loc)
    regression_diff = regression_diff.abs().float()
    regression_loss = torch.where(
            regression_diff < (1. / sigma_squared),
            0.5 * sigma_squared * regression_diff ** 2,
            regression_diff - 0.5 / sigma_squared
        )
    regression_loss = regression_loss.sum()
    num_pos         = (gt_label > 0).sum().float()
    
    regression_loss /= torch.max(num_pos, torch.ones_like(num_pos))
    return regression_loss
def forward(self, imgs, bboxes, labels, masks, scale):
    n = imgs.shape[0]
    img_size = imgs.shape[2:]
    #-#
    # 获取公用特征层
    #-#
    base_feature = self.model_train(imgs, mode='extractor')
    
    # - #
    # 利用rpn网络获得调整参数、得分、建议框、先验框
    # - #
    rpn_locs, rpn_scores, rois, roi_indices, anchor = self.model_train(x=[base_feature, img_size], scale=scale, mode='rpn')
    rpn_loc_loss_all, rpn_cls_loss_all, roi_loc_loss_all, roi_cls_loss_all, mask_loss_all = 0, 0, 0, 0, 0
    
    sample_rois, sample_indexes, gt_roi_locs, gt_roi_labels, gt_masks = [], [], [], [], []
    for i in range(n):
        bbox = bboxes[i]
        label = labels[i]
        mask = masks[i]
        rpn_loc = rpn_locs[i]
        rpn_score = rpn_scores[i]
        roi = rois[i]
        
        # - #
        # 利用真实框和先验框获得建议框网络应该有的预测结果
        # - #
        gt_rpn_loc, gt_rpn_label = self.anchor_target_creator(bbox, anchor[0].cpu().numpy())
        gt_rpn_loc = torch.Tensor(gt_rpn_loc).type_as(rpn_locs)
        gt_rpn_label = torch.Tensor(gt_rpn_label).type_as(rpn_locs).long()
        
        # - #
        # 分别计算建议框网络的回归损失和分类损失
        # - #
        rpn_loc_loss = self._fast_rcnn_loc_loss(rpn_loc, gt_rpn_loc, gt_rpn_label, self.rpn_sigma)
        rpn_cls_loss = F.cross_entropy(rpn_score, gt_rpn_label, ignore_index=-1)
        rpn_loc_loss_all += rpn_loc_loss
        rpn_cls_loss_all += rpn_cls_loss
        
        # - #
        # 利用真实框和建议框获得classifier网络应该有的预测结果
        # - #
        sample_roi, gt_roi_loc, gt_roi_label = self.proposal_target_creator(roi, bbox, label, self.loc_normalize_std)
        sample_rois.append(torch.Tensor(sample_roi).type_as(rpn_locs))
        sample_indexes.append(torch.ones(len(sample_roi)).type_as(rpn_locs) * roi_indices[i][0])
        gt_roi_locs.append(torch.Tensor(gt_roi_loc).type_as(rpn_locs))
        gt_roi_labels.append(torch.Tensor(gt_roi_label).type_as(rpn_locs).long())
        gt_masks.append(torch.Tensor(mask).type_as(rpn_locs))
        
    sample_rois = torch.stack(sample_rois, dim=0)
    sample_indexes = torch.stack(sample_indexes, dim=0)
    roi_cls_locs, roi_scores, roi_masks = self.model_train([base_feature, sample_rois, sample_indexes, img_size], mode='head')
    
    for i in range(n):
        # - #
        # 根据建议框的种类，取出对应的回归预测结果
        # - #
        n_sample = roi_cls_locs.size()[1]
        roi_cls_loc = roi_cls_locs[i]
        roi_score = roi_scores[i]
        roi_mask = roi_masks[i]
        gt_roi_loc = gt_roi_locs[i]
        gt_roi_label = gt_roi_labels[i]
        gt_mask = gt_masks[i]
        
        roi_cls_loc = roi_cls_loc.view(n_sample, -1, 4)
        roi_loc = roi_cls_loc[torch.arange(0, n_sample), gt_roi_label]
        
        # - #
        # 分别计算Classifier网络的回归损失和分类损失
        # - #
        roi_loc_loss = self._fast_rcnn_loc_loss(roi_loc, gt_roi_loc, gt_roi_label.data, self.roi_sigma)
        roi_cls_loss = nn.CrossEntropyLoss()(roi_score, gt_roi_label)
        roi_loc_loss_all += roi_loc_loss
        roi_cls_loss_all += roi_cls_loss
        
        # - #
        # 计算Mask损失
        # - #
        roi_mask = roi_mask[torch.arange(0, n_sample), gt_roi_label.unsqueeze(1), :, :]
        roi_mask_loss = F.binary_cross_entropy_with_logits(roi_mask, gt_mask, reduction='mean')
        mask_loss_all += roi_mask_loss
        
    losses = [rpn_loc_loss_all/n, rpn_cls_loss_all/n, roi_loc_loss_all/n, roi_cls_loss_all/n, mask_loss_all/n]
    losses = losses + [sum(losses)]
    return losses

def train_step(self, imgs, bboxes, labels, masks, scale, fp16=False, scaler=None):
    self.optimizer.zero_grad()
    if not fp16:
        losses = self.forward(imgs, bboxes, labels, masks, scale)
        losses[-1].backward()
        self.optimizer.step()
    else:
        with autocast():
            losses = self.forward(imgs, bboxes, labels, masks, scale)
        #-#
        # 反向传播
        #-#
        scaler.scale(losses[-1]).backward()
        scaler.step(self.optimizer)
        scaler.update()
    return losses

[518789Adf]

class MaskRCNN(nn.Module):
这个参数定义不能丢

[518789Adf]

class MaskRCNN(nn.Module):
def init(self, num_classes,
mode = "training",
feat_stride = 16,
anchor_scales = [8, 16, 32],
ratios = [0.5, 1, 2],
backbone = 'vgg',
pretrained = False):
super(MaskRCNN, self).init()
self.feat_stride = feat_stride
#---------------------------------#
# 一共存在两个主干
# vgg和resnet50
#---------------------------------#
if backbone == 'vgg':
self.extractor, classifier = decom_vgg16(pretrained)
#---------------------------------#
# 构建建议框网络
#---------------------------------#
self.rpn = RegionProposalNetwork(
512, 512,
ratios = ratios,
anchor_scales = anchor_scales,
feat_stride = self.feat_stride,
mode = mode
)
#---------------------------------#
# 构建分类器网络
#---------------------------------#
self.head = VGG16RoIHead(
n_class = num_classes + 1,
roi_size = 7,
spatial_scale = 1,
classifier = classifier
)
self.mask_head = MaskRCNNHead(
n_class=num_classes + 1,
roi_size=14,
spatial_scale=1
)
elif backbone == 'resnet50':
self.extractor, classifier = resnet50(pretrained)
#---------------------------------#
# 构建classifier网络
#---------------------------------#
self.rpn = RegionProposalNetwork(
1024, 512,
ratios = ratios,
anchor_scales = anchor_scales,
feat_stride = self.feat_stride,
mode = mode
)
#---------------------------------#
# 构建classifier网络
#---------------------------------#
self.head = Resnet50RoIHead(
n_class = num_classes + 1,
roi_size = 14,
spatial_scale = 1,
classifier = classifier
)
self.mask_head = MaskRCNNHead(
n_class=num_classes + 1,
roi_size=14,
spatial_scale=1
)

def forward(self, x, scale=1., mode="forward"):
    if mode == "forward":
        #---------------------------------#
        #   计算输入图片的大小
        #---------------------------------#
        img_size        = x.shape[2:]
        #---------------------------------#
        #   利用主干网络提取特征
        #---------------------------------#
        base_feature    = self.extractor.forward(x)

        #---------------------------------#
        #   获得建议框
        #---------------------------------#
        _, _, rois, roi_indices, _  = self.rpn.forward(base_feature, img_size, scale)
        #---------------------------------------#
        #   获得classifier的分类结果和回归结果
        #---------------------------------------#
        roi_cls_locs, roi_scores    = self.head.forward(base_feature, rois, roi_indices, img_size)
        return roi_cls_locs, roi_scores, rois, roi_indices
    elif mode == "extractor":
        #---------------------------------#
        #   利用主干网络提取特征
        #---------------------------------#
        base_feature    = self.extractor.forward(x)
        return base_feature
    elif mode == "rpn":
        base_feature, img_size = x
        #---------------------------------#
        #   获得建议框
        #---------------------------------#
        rpn_locs, rpn_scores, rois, roi_indices, anchor = self.rpn.forward(base_feature, img_size, scale)
        return rpn_locs, rpn_scores, rois, roi_indices, anchor
    elif mode == "head":
        base_feature, rois, roi_indices, img_size = x
        #---------------------------------------#
        #   获得classifier的分类结果和回归结果
        #---------------------------------------#
        roi_cls_locs, roi_scores    = self.head.forward(base_feature, rois, roi_indices, img_size)
        return roi_cls_locs, roi_scores
    elif mode == "mask_head":
        base_feature, rois, roi_indices, img_size = x
        roi_masks = self.mask_head.forward(base_feature, rois, roi_indices, img_size)
        return roi_masks

def freeze_bn(self):
    for m in self.modules():
        if isinstance(m, nn.BatchNorm2d):
            m.eval()

[518789Adf]

import torch
import numpy as np

def maskrcnn_dataset_collate(batch):
images = []
bboxes = []
labels = []
masks = [] # 新增的列表，用于存储掩码信息

for img, box, label, mask in batch:  # 假设 batch 中的每个元素现在包含 (img, box, label, mask)
    images.append(img)
    bboxes.append(box)
    labels.append(label)
    masks.append(mask)  # 添加掩码到 masks 列表

images = torch.from_numpy(np.array(images))

return images, bboxes, labels, masks  # 返回四个列表

[518789Adf]

train.py文件修改：

maskrcnn替换成下面的代码

    """
    train_dataset   = MaskRcnnDataset(train_lines, input_shape, train = True)
    val_dataset     = MaskRcnnDataset(val_lines, input_shape, train = False)

    gen             = DataLoader(train_dataset, shuffle = True, batch_size = batch_size, num_workers = num_workers, pin_memory=True,
                                drop_last=True, collate_fn=maskrcnn_dataset_collate, 
                                worker_init_fn=partial(worker_init_fn, rank=0, seed=seed))
    gen_val         = DataLoader(val_dataset  , shuffle = True, batch_size = batch_size, num_workers = num_workers, pin_memory=True, 
                                drop_last=True, collate_fn=maskrcnn_dataset_collate, 
                                worker_init_fn=partial(worker_init_fn, rank=0, seed=seed))

    train_util      = MaskRCNNTrainer(model_train, optimizer)

[518789Adf]

这样就正常了
再添加导入

[518789Adf]

from nets.Maskrcnn import MaskRCNN

[518789Adf]

import colorsys
import os
import time

import numpy as np
import torch
import torch.nn as nn
from PIL import Image, ImageDraw, ImageFont
from nets.Maskrcnn import MaskRCNN
from nets.frcnn import FasterRCNN
from utils.utils import (cvtColor, get_classes, get_new_img_size, resize_image,
preprocess_input, show_config)
from utils.utils_bbox import DecodeBox
from utils.utils_mask import expand_boxes, expand_masks, random_colors, apply_mask, display_instances

class MRCNN(object):
_defaults = {
"model_path": 'model_data/mask_rcnn_weights.pth',
"classes_path": 'model_data/voc_classes.txt',
"backbone": "resnet50",
"confidence": 0.5,
"nms_iou": 0.3,
'anchors_size': [8, 16, 32],
"cuda": False,
}

@classmethod
def get_defaults(cls, n):
    if n in cls._defaults:
        return cls._defaults[n]
    else:
        return "Unrecognized attribute name '" + n + "'"

def __init__(self, **kwargs):
    self.__dict__.update(self._defaults)
    for name, value in kwargs.items():
        setattr(self, name, value)
        self._defaults[name] = value
    self.class_names, self.num_classes = get_classes(self.classes_path)
    self.std = torch.Tensor([0.1, 0.1, 0.2, 0.2]).repeat(self.num_classes + 1)[None]
    if self.cuda:
        self.std = self.std.cuda()
    self.bbox_util = DecodeBox(self.std, self.num_classes)
    self.generate()
    show_config(**self._defaults)

def generate(self):
    self.net = MaskRCNN(self.num_classes, "predict", anchor_scales=self.anchors_size, backbone=self.backbone)
    device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
    self.net.load_state_dict(torch.load(self.model_path, map_location=device))
    self.net = self.net.eval()
    print('{} model, anchors, and classes loaded.'.format(self.model_path))
    if self.cuda:
        self.net = nn.DataParallel(self.net)
        self.net = self.net.cuda()

def detect_image(self, image, crop=False, count=False):
    image_shape = np.array(np.shape(image)[0:2])
    input_shape = get_new_img_size(image_shape[0], image_shape[1])
    image = cvtColor(image)
    image_data = resize_image(image, [input_shape[1], input_shape[0]])
    image_data = np.expand_dims(np.transpose(preprocess_input(np.array(image_data, dtype='float32')), (2, 0, 1)), 0)
    with torch.no_grad():
        images = torch.from_numpy(image_data)
        if self.cuda:
            images = images.cuda()
        roi_cls_locs, roi_scores, rois, masks, _ = self.net(images)
    results = self.bbox_util.forward(roi_cls_locs, roi_scores, rois, image_shape, input_shape,
                                     nms_iou=self.nms_iou, confidence=self.confidence)
    if len(results[0]) <= 0:
        return image
    top_label = np.array(results[0][:, 5], dtype='int32')
    top_conf = results[0][:, 4]
    top_boxes = results[0][:, :4]
    masks = masks.squeeze(0).permute(1, 2, 0).cpu().numpy()
    boxes = expand_boxes(top_boxes, scale=1.0)
    masks = expand_masks(masks, boxes, image_shape, scale=1.0)
    if count:
        print("top_label:", top_label)
        classes_nums = np.zeros([self.num_classes])
        for i in range(self.num_classes):
            num = np.sum(top_label == i)
            if num > 0:
                print(self.class_names[i], " : ", num)
                classes_nums[i] = num
        print("classes_nums:", classes_nums)
    if crop:
        for i, c in enumerate(top_label):
            top, left, bottom, right = boxes[i]
            top = max(0, np.floor(top).astype('int32'))
            left = max(0, np.floor(left).astype('int32'))
            bottom = min(image.size[1], np.ceil(bottom).astype('int32'))
            right = min(image.size[0], np.ceil(right).astype('int32'))
            dir_save_path = "img_crop"
            if not os.path.exists(dir_save_path):
                os.makedirs(dir_save_path)
            crop_image = image.crop([left, top, right, bottom])
            crop_image.save(os.path.join(dir_save_path, "crop_" + str(i) + ".png"), quality=95, subsampling=0)
            print("save crop_" + str(i) + ".png to " + dir_save_path)
    colors = random_colors(len(top_boxes))
    masked_image = image.copy()
    for i, c in enumerate(top_label):
        masked_image = apply_mask(masked_image, masks[:, :, i], self.class_names[c], colors[i],
                                  alpha=0.5)
    image = Image.fromarray(masked_image)
    font = ImageFont.truetype(font='model_data/simhei.ttf', size=np.floor(3e-2 * image.size[1] + 0.5).astype('int32'))
    thickness = int(max((image.size[0] + image.size[1]) // np.mean(input_shape), 1))
    for i, c in enumerate(top_label):
        top, left, bottom, right = boxes[i]
        top = max(0, np.floor(top).astype('int32'))
        left = max(0, np.floor(left).astype('int32'))
        label = '{} {:.2f}'.format(self.class_names[c], top_conf[i])
        draw = ImageDraw.Draw(image)
        label_size = draw.textsize(label, font)
        text_origin = np.array([left, top + 1])
        for j in range(thickness):
            draw.rectangle([left + j, top + j, right - j, bottom - j], outline=colors[i])
        draw.rectangle([tuple(text_origin), tuple(text_origin + label_size)], fill=colors[i])
        draw.text(text_origin, str(label, 'UTF-8'), fill=(0, 0, 0), font=font)
        del draw
    return image

def get_FPS(self, image, test_interval):
    image_shape = np.array(np.shape(image)[0:2])
    input_shape = get_new_img_size(image_shape[0], image_shape[1])
    image = cvtColor(image)
    image_data = resize_image(image, [input_shape[1], input_shape[0]])
    image_data = np.expand_dims(np.transpose(preprocess_input(np.array(image_data, dtype='float32')), (2, 0, 1)), 0)
    with torch.no_grad():
        images = torch.from_numpy(image_data)
        if self.cuda:
            images = images.cuda()
        roi_cls_locs, roi_scores, rois, masks, _ = self.net(images)
    t1 = time.time()
    for _ in range(test_interval):
        with torch.no_grad():
            roi_cls_locs, roi_scores, rois, masks, _ = self.net(images)
    t2 = time.time()
    tact_time = (t2 - t1) / test_interval
    return tact_time

def get_map_txt(self, image_id, image, class_names, map_out_path):
    f = open(os.path.join(map_out_path, "detection-results/" + image_id + ".txt"), "w")
    image_shape = np.array(np.shape(image)[0:2])
    input_shape = get_new_img_size(image_shape[0], image_shape[1])
    image = cvtColor(image)
    image_data = resize_image(image, [input_shape[1], input_shape[0]])
    image_data = np.expand_dims(np.transpose(preprocess_input(np.array(image_data, dtype='float32')), (2, 0, 1)), 0)
    with torch.no_grad():
        images = torch.from_numpy(image_data)
        if self.cuda:
            images = images.cuda()
        roi_cls_locs, roi_scores, rois, masks, _ = self.net(images)
    results = self.bbox_util.forward(roi_cls_locs, roi_scores, rois, image_shape, input_shape,
                                     nms_iou=self.nms_iou, confidence=self.confidence)
    if len(results[0]) <= 0:
        return
    top_label = np.array(results[0][:, 5], dtype='int32')
    top_conf = results[0][:, 4]
    top_boxes = results[0][:, :4]
    for i, c in list(enumerate(top_label)):
        predicted_class = self.class_names[int(c)]
        box = top_boxes[i]
        score = str(top_conf[i])
        top, left, bottom, right = box
        if predicted_class not in class_names:
            continue
        f.write("%s %s %s %s %s %s\n" %
                (predicted_class, score[:6], str(int(left)), str(int(top)), str(int(right)), str(int(bottom))))
    f.close()
    return

frcnn文件补出这个

[518789Adf]

import numpy as np
from skimage.measure import find_contours
import matplotlib.pyplot as plt
import matplotlib.patches as patches
import matplotlib.lines as lines
from matplotlib.collections import PatchCollection
import colorsys
from PIL import Image, ImageDraw
import random

def expand_boxes(boxes, scale):
"""Expand an array of boxes by a given scale."""
w_half = (boxes[:, 2] - boxes[:, 0]) * .5
h_half = (boxes[:, 3] - boxes[:, 1]) * .5
x_c = (boxes[:, 2] + boxes[:, 0]) * .5
y_c = (boxes[:, 3] + boxes[:, 1]) * .5

w_half *= scale
h_half *= scale

boxes_exp = np.zeros(boxes.shape)
boxes_exp[:, 0] = x_c - w_half
boxes_exp[:, 2] = x_c + w_half
boxes_exp[:, 1] = y_c - h_half
boxes_exp[:, 3] = y_c + h_half

return boxes_exp

def expand_masks(masks, boxes, image_shape, scale):
"""Expand masks using the specified scale."""
# Expand boxes
boxes_exp = expand_boxes(boxes, scale)

# Extract masks within the expanded boxes
expanded_masks = []
for i, box in enumerate(boxes_exp):
    mask = masks[:, :, i]
    y1, x1, y2, x2 = box.astype(int)
    
    # Ensure the mask is within the image bounds
    y1 = max(0, y1)
    x1 = max(0, x1)
    y2 = min(image_shape[0], y2)
    x2 = min(image_shape[1], x2)
    
    # Crop the mask
    cropped_mask = mask[y1:y2, x1:x2]
    
    # Resize the cropped mask back to the original mask size
    resized_mask = np.resize(cropped_mask, (image_shape[0], image_shape[1]))
    
    expanded_masks.append(resized_mask)

return np.stack(expanded_masks, axis=-1)

def random_colors(N, bright=True):
"""
Generate random colors.
To get visually distinct colors, generate them in HSV space then
convert to RGB.
"""
brightness = 1.0 if bright else 0.7
hsv = [(i / N, 1, brightness) for i in range(N)]
colors = list(map(lambda c: colorsys.hsv_to_rgb(*c), hsv))
return colors

def apply_mask(image, mask, color, alpha=0.5):
"""Apply the given mask to the image."""
for c in range(3):
image[:, :, c] = np.where(mask == 1,
image[:, :, c] *
(1 - alpha) + alpha * color[c] * 255,
image[:, :, c])
return image

def display_instances(image, boxes, masks, class_ids, class_names,
scores=None, title="",
figsize=(16, 16), ax=None,
show_mask=True, show_bbox=True,
colors=None, captions=None):
"""
boxes: [num_instance, (y1, x1, y2, x2, class_id)] in image coordinates.
masks: [height, width, num_instances]
class_ids: [num_instances]
class_names: list of class names of the dataset
scores: (optional) confidence scores for each box
title: (optional) Figure title
show_mask, show_bbox: To show masks and bounding boxes or not
figsize: (optional) the size of the image
colors: (optional) An array or colors to use with each object
captions: (optional) A list of strings to use as captions for each object
"""
# Number of instances
N = boxes.shape[0]
if not N:
print("\n*** No instances to display *** \n")
else:
assert boxes.shape[0] == masks.shape[-1] == class_ids.shape[0]

# If no axis is passed, create one and automatically call show()
auto_show = False
if not ax:
    _, ax = plt.subplots(1, figsize=figsize)
    auto_show = True

# Generate random colors
colors = colors or random_colors(N)

# Show area outside image boundaries.
height, width = image.shape[:2]
ax.set_ylim(height + 10, -10)
ax.set_xlim(-10, width + 10)
ax.axis('off')
ax.set_title(title)

masked_image = image.astype(np.uint32).copy()
for i in range(N):
    color = colors[i]

    # Bounding box
    if not np.any(boxes[i]):
        # Skip this instance. Has no bbox. Likely lost in image cropping.
        continue
    y1, x1, y2, x2 = boxes[i]
    if show_bbox:
        p = patches.Rectangle((x1, y1), x2 - x1, y2 - y1, linewidth=2,
                              alpha=0.7, linestyle="dashed",
                              edgecolor=color, facecolor='none')
        ax.add_patch(p)

    # Label
    if not captions:
        class_id = class_ids[i]
        score = scores[i] if scores is not None else None
        label = class_names[class_id]
        x = random.randint(x1, (x1 + x2) // 2)
        caption = "{} {:.3f}".format(label, score) if score else label
    else:
        caption = captions[i]
    ax.text(x1, y1 + 8, caption,
            color='w', size=11, backgroundcolor="none")

    # Mask
    mask = masks[:, :, i]
    if show_mask:
        masked_image = apply_mask(masked_image, mask, color)
        # Mask Polygon
        # Pad to ensure proper polygons for masks that touch image edges.
        padded_mask = np.zeros(
            (mask.shape[0] + 2, mask.shape[1] + 2), dtype=np.uint8)
        padded_mask[1:-1, 1:-1] = mask
        contours = find_contours(padded_mask, 0.5)
        for verts in contours:
            # Subtract the padding and flip (y, x) to (x, y)
            verts = np.fliplr(verts) - 1
            p = patches.Polygon(verts, facecolor="none", edgecolor=color)
            ax.add_patch(p)

# Show the image with masks and bounding boxes
ax.imshow(masked_image.astype(np.uint8))

if auto_show:
    plt.show()

[518789Adf]

这个是utils_mask.py

[518789Adf]

maskrcnn替换成下面的代码

    """
    train_dataset   = MaskRcnnDataset(train_lines, input_shape, train = True)
    val_dataset     = MaskRcnnDataset(val_lines, input_shape, train = False)

    gen             = DataLoader(train_dataset, shuffle = True, batch_size = batch_size, num_workers = num_workers, pin_memory=True,
                                drop_last=True, collate_fn=maskrcnn_dataset_collate, 
                                worker_init_fn=partial(worker_init_fn, rank=0, seed=seed))
    gen_val         = DataLoader(val_dataset  , shuffle = True, batch_size = batch_size, num_workers = num_workers, pin_memory=True, 
                                drop_last=True, collate_fn=maskrcnn_dataset_collate, 
                                worker_init_fn=partial(worker_init_fn, rank=0, seed=seed))

    train_util      = MaskRCNNTrainer(model_train, optimizer)
    """
    #----------------------#
    训练时替换

[518789Adf]

frcnn = FRCNN()
#maskrcnn
#frcnn = MRCNN(confidence = confidence, nms_iou = nms_iou)
这是替换，用于predict和getmap，开头加上
from frcnn import FRCNN,MRCNN
即可