state-of-the-art implementations related to visual recognition and search

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Source Code

Non-exhaustive list of state-of-the-art implementations related to visual recognition and search. There is no warranty for the source code links below – use them at your own risk!

Feature Detection and Description

General Libraries:

VLFeat – Implementation of various feature descriptors (including SIFT, HOG, and LBP) and covariant feature detectors (including DoG, Hessian, Harris Laplace, Hessian Laplace, Multiscale Hessian, Multiscale Harris). Easy-to-use Matlab interface. SeeVLFeat hands-on session training
OpenCV – Various implementations of modern feature detectors and descriptors (SIFT, SURF, FAST, BRIEF, ORB, FREAK, etc.)

Fast Keypoint Detectors for Real-time Applications:

FAST – High-speed corner detector implementation for a wide variety of platforms
AGAST – Even faster than the FAST corner detector. A multi-scale version of this method is used for the BRISK descriptor (ECCV 2010).

Binary Descriptors for Real-Time Applications:

BRIEF – C++ code for a fast and accurate interest point descriptor (not invariant to rotations and scale) (ECCV 2010)
ORB – OpenCV implementation of the Oriented-Brief (ORB) descriptor (invariant to rotations, but not scale)
BRISK – Efficient Binary descriptor invariant to rotations and scale. It includes a Matlab mex interface. (ICCV 2011)
FREAK – Faster than BRISK (invariant to rotations and scale) (CVPR 2012)

SIFT and SURF Implementations:

SIFT: VLFeat, OpenCV, Original code by David Lowe, GPU implementation, OpenSIFT
SURF: Herbert Bay’s code, OpenCV, GPU-SURF

Other Local Feature Detectors and Descriptors:

VGG Affine Covariant features – Oxford code for various affine covariant feature detectors and descriptors.
LIOP descriptor – Source code for the Local Intensity order Pattern (LIOP) descriptor (ICCV 2011).
Local Symmetry Features – Source code for matching of local symmetry features under large variations in lighting, age, and rendering style (CVPR 2012).

Global Image Descriptors:

GIST – Matlab code for the GIST descriptor
CENTRIST – Global visual descriptor for scene categorization and object detection (PAMI 2011)

Feature Coding and Pooling

VGG Feature Encoding Toolkit – Source code for various state-of-the-art feature encoding methods – including Standard hard encoding, Kernel codebook encoding, Locality-constrained linear encoding, and Fisher kernel encoding.
Spatial Pyramid Matching – Source code for feature pooling based on spatial pyramid matching (widely used for image classification)

Convolutional Nets and Deep Learning

Caffe – Fast C++ implementation of deep convolutional networks (GPU / CPU / ImageNet 2013 demonstration).
EBLearn – C++ Library for Energy-Based Learning. It includes several demos and step-by-step instructions to train classifiers based on convolutional neural networks.
Torch7 – Provides a matlab-like environment for state-of-the-art machine learning algorithms, including a fast implementation of convolutional neural networks.
Deep Learning – Various links for deep learning software.

Facial Feature Detection and Tracking

IntraFace – Very accurate detection and tracking of facial features (C++/Matlab API).

Part-Based Models

Deformable Part-based Detector – Library provided by the authors of the original paper (state-of-the-art in PASCAL VOC detection task)
Efficient Deformable Part-Based Detector – Branch-and-Bound implementation for a deformable part-based detector.
Accelerated Deformable Part Model – Efficient implementation of a method that achieves the exact same performance of deformable part-based detectors but with significant acceleration (ECCV 2012).
Coarse-to-Fine Deformable Part Model – Fast approach for deformable object detection (CVPR 2011).
Poselets – C++ and Matlab versions for object detection based on poselets.
Part-based Face Detector and Pose Estimation – Implementation of a unified approach for face detection, pose estimation, and landmark localization (CVPR 2012).

Attributes and Semantic Features

Relative Attributes – Modified implementation of RankSVM to train Relative Attributes (ICCV 2011).
Object Bank – Implementation of object bank semantic features (NIPS 2010). See also ActionBank
Classemes, Picodes, and Meta-class features – Software for extracting high-level image descriptors (ECCV 2010, NIPS 2011, CVPR 2012).

Large-Scale Learning

Additive Kernels – Source code for fast additive kernel SVM classifiers (PAMI 2013).
LIBLINEAR – Library for large-scale linear SVM classification.
VLFeat – Implementation for Pegasos SVM and Homogeneous Kernel map.

Fast Indexing and Image Retrieval

FLANN – Library for performing fast approximate nearest neighbor.
Kernelized LSH – Source code for Kernelized Locality-Sensitive Hashing (ICCV 2009).
ITQ Binary codes – Code for generation of small binary codes using Iterative Quantization and other baselines such as Locality-Sensitive-Hashing (CVPR 2011).
INRIA Image Retrieval – Efficient code for state-of-the-art large-scale image retrieval (CVPR 2011).

Object Detection

See Part-based Models and Convolutional Nets above.
Pedestrian Detection at 100fps – Very fast and accurate pedestrian detector (CVPR 2012).
Caltech Pedestrian Detection Benchmark – Excellent resource for pedestrian detection, with various links for state-of-the-art implementations.
OpenCV – Enhanced implementation of Viola&Jones real-time object detector, with trained models for face detection.
Efficient Subwindow Search – Source code for branch-and-bound optimization for efficient object localization (CVPR 2008).

3D Recognition

Point-Cloud Library – Library for 3D image and point cloud processing.

Action Recognition

ActionBank – Source code for action recognition based on the ActionBank representation (CVPR 2012).
STIP Features – software for computing space-time interest point descriptors
Independent Subspace Analysis – Look for Stacked ISA for Videos (CVPR 2011)
Velocity Histories of Tracked Keypoints – C++ code for activity recognition using the velocity histories of tracked keypoints (ICCV 2009)

Datasets

Attributes

Animals with Attributes – 30,475 images of 50 animals classes with 6 pre-extracted feature representations for each image.
aYahoo and aPascal – Attribute annotations for images collected from Yahoo and Pascal VOC 2008.
FaceTracer – 15,000 faces annotated with 10 attributes and fiducial points.
PubFig – 58,797 face images of 200 people with 73 attribute classifier outputs.
LFW – 13,233 face images of 5,749 people with 73 attribute classifier outputs.
Human Attributes – 8,000 people with annotated attributes. Check also this link for another dataset of human attributes.
SUN Attribute Database – Large-scale scene attribute database with a taxonomy of 102 attributes.
ImageNet Attributes – Variety of attribute labels for the ImageNet dataset.
Relative attributes – Data for OSR and a subset of PubFig datasets. Check also this link for the WhittleSearch data.
Attribute Discovery Dataset – Images of shopping categories associated with textual descriptions.

Fine-grained Visual Categorization

Caltech-UCSD Birds Dataset – Hundreds of bird categories with annotated parts and attributes.
Stanford Dogs Dataset – 20,000 images of 120 breeds of dogs from around the world.
Oxford-IIIT Pet Dataset – 37 category pet dataset with roughly 200 images for each class. Pixel level trimap segmentation is included.
Leeds Butterfly Dataset – 832 images of 10 species of butterflies.
Oxford Flower Dataset – Hundreds of flower categories.

Face Detection

FDDB – UMass face detection dataset and benchmark (5,000+ faces)
CMU/MIT – Classical face detection dataset.

Face Recognition

Face Recognition Homepage – Large collection of face recognition datasets.
LFW – UMass unconstrained face recognition dataset (13,000+ face images).
NIST Face Homepage – includes face recognition grand challenge (FRGC), vendor tests (FRVT) and others.
CMU Multi-PIE – contains more than 750,000 images of 337 people, with 15 different views and 19 lighting conditions.
FERET – Classical face recognition dataset.
Deng Cai’s face dataset in Matlab Format – Easy to use if you want play with simple face datasets including Yale, ORL, PIE, and Extended Yale B.
SCFace – Low-resolution face dataset captured from surveillance cameras.

Handwritten Digits

MNIST – large dataset containing a training set of 60,000 examples, and a test set of 10,000 examples.

Pedestrian Detection

Caltech Pedestrian Detection Benchmark – 10 hours of video taken from a vehicle,350K bounding boxes for about 2.3K unique pedestrians.
INRIA Person Dataset – Currently one of the most popular pedestrian detection datasets.
ETH Pedestrian Dataset – Urban dataset captured from a stereo rig mounted on a stroller.
TUD-Brussels Pedestrian Dataset – Dataset with image pairs recorded in an crowded urban setting with an onboard camera.
PASCAL Human Detection – One of 20 categories in PASCAL VOC detection challenges.
USC Pedestrian Dataset – Small dataset captured from surveillance cameras.

Generic Object Recognition

ImageNet – Currently the largest visual recognition dataset in terms of number of categories and images.
Tiny Images – 80 million 32×32 low resolution images.
Pascal VOC – One of the most influential visual recognition datasets.
Caltech 101 / Caltech 256 – Popular image datasets containing 101 and 256 object categories, respectively.
MIT LabelMe – Online annotation tool for building computer vision databases.

Scene Recognition

MIT SUN Dataset – MIT scene understanding dataset.
UIUC Fifteen Scene Categories – Dataset of 15 natural scene categories.

Feature Detection and Description

VGG Affine Dataset – Widely used dataset for measuring performance of feature detection and description. CheckVLBenchmarks for an evaluation framework.

Action Recognition