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Geometric Transformations

Similarity, affine, and projective transformations

To remove outliers in matched feature sets, you can use the RANSAC method to compute geometric transformations between images. Then you can apply the geometric transformation to align the two images.

Functions

estimateGeometricTransform Estimate geometric transform from matching point pairs
imwarp Apply geometric transformation to image

System Objects

vision.GeometricShearer Shift rows or columns of image by linearly varying offset

Blocks

Estimate Geometric Transformation Estimate geometric transformation from matching point pairs
Resize Enlarge or shrink image sizes
Rotate Rotate image by specified angle
Shear Shift rows or columns of image by linearly varying offset
Translate Translate image in 2-D plane using displacement vector
Warp Apply projective or affine transformation to an image

Topics

MATLAB Workflow

Nearest Neighbor, Bilinear, and Bicubic Interpolation Methods

Understand how geometric transformation blocks interpolate values

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

Rotate an Image

Use the Rotate block to continuously rotate an image

Resize an Image

Use the Resize block to reduce the size of an image

Crop an Image

Use the Selector block to trim an image down to a region of interest

Video Stabilization

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

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