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ShearImage

Computes a leant image (shifts the rows).

Name	Type	Range	Description
inImage	Image		Input image
inShear	Real	- -	Relative shift between consecutive rows or columns of the image
inAxis	Axis		Switches between horizontal or vertical shearing
inInterpolationMethod	InterpolationMethod
outImage	Image		Output image

Applications

Image preprocessing when there are slanted objects.

Description

The filter ShearImage applies basic affine transform to each image's pixel.

Shear affine transform is defined as:

When X axis is selected

\[ \left[\begin{array}{ccc} x' \\ y' \end{array} \right] = \left[\begin{array}{ccc} 1 & inShear \\ 0 & 1 \end{array} \right] \left[\begin{array}{ccc} x \\ y \end{array} \right] \]

When Y axis is selected

\[ \left[\begin{array}{ccc} x' \\ y' \end{array} \right] = \left[\begin{array}{ccc} 1 & 0\\ inShear & 1 \end{array} \right] \left[\begin{array}{ccc} x \\ y \end{array} \right] \]

Examples

ShearImage performed on the sample image with inAxis = X, inShear = 0.50.

Errors

This filter can throw an exception to report error. Read how to deal with errors in Error Handling.

List of possible exceptions:

Error type	Description
DomainError	inImage and outImage are not distinct in ShearImage.

Complexity Level