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Image Registration

Automatic image or video frame registration

Computer Vision System Toolbox™ algorithms enable automatic image registration. These algorithms use features to estimate the geometric relationships between images or video frames. Typical uses include video mosaicking, video stabilization, image fusion, and 3-D vision.

Functions

detectBRISKFeatures Detect BRISK features and return BRISKPoints object
detectFASTFeatures Detect corners using FAST algorithm and return cornerPoints object
detectHarrisFeatures Detect corners using Harris–Stephens algorithm and return cornerPoints object
detectMinEigenFeatures Detect corners using minimum eigenvalue algorithm and return cornerPoints object
detectMSERFeatures Detect MSER features and return MSERRegions object
detectSURFFeatures Detect SURF features and return SURFPoints object
extractFeatures Extract interest point descriptors
extractHOGFeatures Extract histogram of oriented gradients (HOG) features
matchFeatures Find matching features
showMatchedFeatures Display corresponding feature points
imwarp Apply geometric transformation to image
estimateGeometricTransform Estimate geometric transform from matching point pairs
vision.BlockMatcher Estimate motion between images or video frames
vision.LocalMaximaFinder Find local maxima in matrices
vision.TemplateMatcher Locate template in image
binaryFeatures Object for storing binary feature vectors
BRISKPoints Object for storing BRISK interest points
cornerPoints Object for storing corner points
MSERRegions Object for storing MSER regions
SURFPoints Object for storing SURF interest points
affine2d 2-D Affine Geometric Transformation
affine3d 3-D Affine Geometric Transformation
projective2d 2-D Projective Geometric Transformation

Blocks

Corner Detection Calculate corner metric matrix and find corners in images
Estimate Geometric Transformation Estimate geometric transformation from matching point pairs
Find Local Maxima Find local maxima in matrices
Template Matching Locate a template in an image
Warp Apply projective or affine transformation to an image

Topics

Understand Feature Detection and Extraction and Point Feature Types

Local Feature Detection and Extraction

Learn the benefits and applications of local feature detection and extraction

Point Feature Types

Choose functions that return and accept points objects for several types of features

Coordinate Systems

Specify pixel Indices, spatial coordinates, and 3-D coordinate systems

MATLAB Workflow

Find Image Rotation and Scale Using Automated Feature Matching

This example shows how to automatically determine the geometric transformation between a pair of images.

Feature Based Panoramic Image Stitching

This example shows how to automatically create a panorama using feature based image registration techniques.

Video Stabilization

This example shows how to remove the effect of camera motion from a video stream.

Video Stabilization Using Point Feature Matching

This example shows how to stabilize a video that was captured from a jittery platform.

Simulink Workflow

Video Mosaicking

This example shows how to create a mosaic from a video sequence.

Video Stabilization

This example shows how to remove the effect of camera motion from a video stream.

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