Detect circles with various radii in grayscale image via Hough Transform

Versión 1.1.0.0 (113 KB) por Tao Peng
Detect circular shapes in a grayscale image. Resolve their center positions and radii.
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Actualizado 17 nov 2010

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Nota del editor: This file was selected as MATLAB Central Pick of the Week

Circular Hough transform based on the gradient field of an image.
1. Operates on grayscale images, NOT B/W bitmaps.
2. NO loops in the implementation of Circular Hough transform, which means faster operation but at the same time larger memory consumption.
3. Detection of radii works for concentric circles as well.

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Tao Peng (2024). Detect circles with various radii in grayscale image via Hough Transform (https://www.mathworks.com/matlabcentral/fileexchange/9168-detect-circles-with-various-radii-in-grayscale-image-via-hough-transform), MATLAB Central File Exchange. Recuperado .

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Se creó con R14SP2
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Versión Publicado Notas de la versión
1.1.0.0

Added Signal Processing Toolbox as additional product requirement
1.0.0.0

Fixed a bug in the code which causes the following problem:
??? Attempted to access SgnCv_LMPos(0); index must be a positive integer or logical.
Error in ==> CircularHough_Grd at 630
cirrad(k) = SgnCv_LMPos(end);