Android example of document scanning with OpenCV featuring edge detection, perspective correction, and image enhancement. Demonstrates implementation of camera preview, image processing, and OCR integration for document scanner applications.
Take any phone-taken picture and turn it into a document scan.
Automatically extract documents from images and perspectively correct them with classic computer-vision algorithms. In maintenance mode. Check out its successor at:
Android application for correcting perspective in photos.
Pytorch implementation for Perspective Plane Program Induction from a Single Image (P3I).
This is a projective geometry project aiming to correct perspective distortions in images after a user identifies pairs of horizontal and vertical lines.
PixSoR - Pixel Software Renderer with Shader Emulation.
iOS app that scans a photo and saves it with a custom timestamp and location data
Automatic photo rectification
Zero-tap document rectification for Android — automatic boundary detection, perspective correction, and clean rectangular output using classical CV with planned ML enhancement
Simple software rendering
A modern, web-based tool to fix skewed or distorted image perspectives using Bezier control points. Built with Next.js and fully browser-based.
Software rasterizer written in C++
An OpenCV project that automatically detects a document in an image and finds its corners for perspective correction. This notebook demonstrates a practical computer vision pipeline using morphological operations, Canny edge detection, and contour analysis to prepare for a "bird's-eye view" transformation.
VisionMetrix is a computer vision platform that measures real-world objects using a standard A4 sheet as a reference plane. It converts pixel distances into millimeters through perspective correction, homography transforms, sub-pixel corner refinement, and rotation-invariant dimensioning for accurate planar measurement.
Perspective correction and image alignment tool for OCR/AI preprocessing. Straighten skewed documents. Pure HTML/JS.
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