计算机视觉算法实现

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General Image Processing

OpenCV

(C/C++ code, BSD lic) Image manipulation, matrix manipulation, transforms

Torch3Vision

(C/C++ code, BSD lic) Basic image processing, matrix manipulation and feature extraction algorithms: rotation, flip, photometric normalisations (Histogram Equalization, Multiscale Retinex, Self-Quotient Image or Gross-Brajovic), edge detection, 2D DCT, 2D FFT, 2D Gabor, PCA to do Eigen-Faces, LDA to do Fisher-Faces. Various metrics (Euclidean, Mahanalobis, ChiSquare, NormalizeCorrelation, TangentDistance, ...)

GradientShop

(C/C++ code, GPL lic) GradientShop: A Gradient-Domain Optimization Framework for Image and Video Filtering

ImLab

(C/C++ code, MIT lic) A Free Experimental System for Image Processing (loading, transforms, filters, histogram, morphology, ...)

CIMG

(C/C++ code, GPL and LGPL lic) CImg Library is an open source C++ toolkit for image processing

Generic Image Library (GIL) - boost integration

(C/C++ code, MIT lic) Adobe open source C++ Generic Image Library (GIL)

SimpleCV a kinder, gentler machine vision library

(python code, MIT lic) SimpleCV is a Python interface to several powerful open source computer vision libraries in a single convenient package

PCL, The Point Cloud Library

(C/C++ code, BSD lic) The Point Cloud Library (or PCL) is a large scale, open project for point cloud processing. The PCL framework contains numerous state-of-the art algorithms including filtering, feature estimation, surface reconstruction, registration, model fitting and segmentation.

Population, imaging library in C++ for processing, analysing, modelling and visualising

(C/C++ code, CeCill lic) Population is an open-source imaging library in C++ for processing, analysing, modelling and visualising including more than 200 algorithms designed by V. Tariel.

Free but not open source - ArrayFire (formely LibJacket) is a matrix library for CUDA

(CUDA/C++, free lic) ArrayFire offers hundreds of general matrix and image processing functions, all running on the GPU. The syntax is very Matlab-like, with the goal of offering easy porting of Matlab code to C++/ArrayFire.

Image Acquisition, Decoding & encoding

FFMPEG

(C/C++ code, LGPL or GPL lic) Record, convert and stream audio and video (lot of codec)

OpenCV

(C/C++ code, BSD lic) PNG, JPEG,... images, avi video files, USB webcam,...

Torch3Vision

(C/C++ code, BSD lic) Video file decoding/encoding (ffmpeg integration), image capture from a frame grabber or from USB, Sony pan/tilt/zoom camera control using VISCA interface

lib VLC

(C/C++ code, GPL lic) Used by VLC player: record, convert and stream audio and video

Live555

(C/C++ code, LGPL lic) RTSP streams

ImageMagick

(C/C++ code, GPL lic) Loading & saving DPX, EXR, GIF, JPEG, JPEG-2000, PDF, PhotoCD, PNG, Postscript, SVG, TIFF, and more

DevIL

(C/C++ code, LGPL lic) Loading & saving various image format

FreeImage

(C/C++ code, GPL & FPL lic) PNG, BMP, JPEG, TIFF loading

VideoMan

(C/C++ code, LGPL lic) VideoMan is trying to make the image capturing process from cameras, video files or image sequences easier.

Segmentation

OpenCV

(C/C++ code, BSD lic) Pyramid image segmentation

Branch-and-Mincut

(C/C++ code, Microsoft Research Lic) Branch-and-Mincut Algorithm for Image Segmentation

Efficiently solving multi-label MRFs ( Readme)

(C/C++ code) Segmentation, object category labelling, stereo

Machine Learning

Torch

(C/C++ code, BSD lic) Gradient machines ( multi-layered perceptrons, radial basis functions, mixtures of experts, convolutional networks and even time-delay neural networks), Support vector machines, Ensemble models (bagging, adaboost), Non-parametric models (K-nearest-neighbors, Parzen regression and Parzen density estimator), distributions (Kmeans, Gaussian mixture models, hidden Markov models, input-output hidden Markov models, and Bayes classifier), speech recognition tools

Object Detection

OpenCV

(C/C++ code, BSD lic) Viola-jones face detection (Haar features)

Torch3Vision

(C/C++ code, BSD lic) MLP & cascade of Haar-like classifiers face detection

Hough Forests

(C/C++ code, Microsoft Research Lic) Class-Specific Hough Forests for Object Detection

Efficient Subwindow Object Detection

(C/C++ code, Apache Lic) Christoph Lampert "Efficient Subwindow" algorithms for Object Detection

INRIA Object Detection and Localization Toolkit

(C/C++ code, Custom Lic) Histograms of Oriented Gradients library for Object Detection

Object Category Labelling

Efficiently solving multi-label MRFs ( Readme)

(C/C++ code) Segmentation, object category labelling, stereo

Multi-label optimization

(C/C++/MATLAB code) The gco-v3.0 library is for optimizing multi-label energies. It supports energies with any combination of unary, pairwise, and label cost terms.

Optical flow

OpenCV

(C/C++ code, BSD lic) Horn & Schunck algorithm, Lucas & Kanade algorithm, Lucas-Kanade optical flow in pyramids, block matching

GPU-KLT+FLOW

(C/C++/OpenGL/Cg code, LGPL) Gain-Adaptive KLT Tracking and TV-L1 optical flow on the GPU

Features Extraction & Matching

SIFT by R. Hess

(C/C++ code, GPL lic) SIFT feature extraction & RANSAC matching

OpenSURF

(C/C++ code) SURF feature extraction algorihtm (kind of fast SIFT)

ASIFT (from IPOL)

(C/C++ code, Ecole Polytechnique and ENS Cachan for commercial Lic) Affine SIFT (ASIFT)

VLFeat (formely Sift++)

(C/C++ code) SIFT, MSER, k-means, hierarchical k-means, agglomerative information bottleneck, and quick shift

SiftGPU

A GPU Implementation of Scale Invariant Feature Transform (SIFT)

Groupsac

(C/C++ code, GPL lic) An enhance version of RANSAC that considers the correlation between data points

Nearest Neighbors matching

FLANN

(C/C++ code, BSD lic) Approximate Nearest Neighbors ( Fast Approximate Nearest Neighbors with Automatic Algorithm Configuration)

ANN

(C/C++ code, LGPL lic) Approximate Nearest Neighbor Searching

Tracking

OpenCV

(C/C++ code, BSD lic) Kalman, Condensation, CAMSHIFT, Mean shift, Snakes

KLT: An Implementation of the Kanade-Lucas-Tomasi Feature Tracker

(C/C++ code, public domain) Kanade-Lucas-Tomasi Feature Tracker

GPU_KLT

(C/C++/OpenGL/Cg code, ) A GPU-based Implementation of the Kanade-Lucas-Tomasi Feature Tracker

GPU-KLT+FLOW

(C/C++/OpenGL/Cg code, LGPL) Gain-Adaptive KLT Tracking and TV-L1 optical flow on the GPU

On-line boosting trackers

(C/C++, LGPL) On-line boosting tracker, semi-supervised tracker, beyond semi-supervised tracker

Simultaneous localization and mapping

Real-Time SLAM - SceneLib

(C/C++ code, LGPL lic) Real-time vision-based SLAM with a single camera

PTAM

(C/C++ code, Isis Innovation Limited lic) Parallel Tracking and Mapping for Small AR Workspaces

Camera Calibration & constraint

OpenCV

(C/C++ code, BSD lic) Chessboard calibration, calibration with rig or pattern

Geometric camera constraint - Minimal Problems in Computer Vision

Minimal problems in computer vision arise when computing geometrical models from image data. They often lead to solving systems of algebraic equations.

Camera Calibration Toolbox for Matlab

(Matlab toolbox) Camera Calibration Toolbox for Matlab by Jean-Yves Bouguet (C implementation in OpenCV)

Multi-View Reconstruction

Bundle Adjustment - SBA

(C/C++ code, GPL lic) A Generic Sparse Bundle Adjustment Package Based on the Levenberg-Marquardt Algorithm

Bundle Adjustment - SSBA

(C/C++ code, LGPL lic) Simple Sparse Bundle Adjustment (SSBA)

Stereo

Efficiently solving multi-label MRFs ( Readme)

(C/C++ code) Segmentation, object category labelling, stereo

LIBELAS: Library for Efficient LArge-scale Stereo Matching

(C/C++ code) Disparity maps, stereo

Structure from motion

Bundler

(C/C++ code, GPL lic) A structure-from-motion system for unordered image collections

Patch-based Multi-view Stereo Software ( Windows version)

(C/C++ code, GPL lic) A multi-view stereo software that takes a set of images and camera parameters, then reconstructs 3D structure of an object or a scene visible in the images

libmv - work in progress

(C/C++ code, MIT lic) A structure from motion library

Multicore Bundle Adjustment

(C/C++/GPU code, GPL3 lic) Design and implementation of new inexact Newton type Bundle Adjustment algorithms that exploit hardware parallelism for efficiently solving large scale 3D scene reconstruction problems.

Visual odometry

LIBVISO2: Library for VISual Odometry 2

(C/C++ code, Matlab, GPL lic) Libviso 2 is a very fast cross-platfrom (Linux, Windows) C++ library with MATLAB wrappers for computing the 6 DOF motion of a moving mono/stereo camera.