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Unshear

The Unshear module attempts to automatically undo a shear on the image. This happens in cases of words in italics or when images undergo forms of distortions. Removing shear transforms can be a needed precursor to barcode or OCR type applications.

Interface

Instructions

1. Color - Select if color values should be considered during the unwarp process

2. Grayscale - Select if only grayscale values should be considered during the unwarp process

3. Binary - Select if you are working with a threshold (black and white) image.

4. Threshold (Binary Only) - Specify the threshold value used to recreate a black and white image after shear correction is applied.

5. Check scale - Some shear operations also require a scale change (due to depth) during the unshear process. If your resulting image appears to have a triangular nature try selecting this checkbox to see if that helps.

6. Search Size - When attempting to search for alignment the module will use the search size to look for proper alignment on each image line.

See Also


Line Alignment
Shear
Radial
Cylindrical Unwarp
Spherical Unwarp


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