Automatic threshold estimation for gradient image segmentation

Tianxu Zhang; Xinsai Wang; Yuehuan Wang

doi:10.1117/12.441435

21 September 2001 Automatic threshold estimation for gradient image segmentation

Tianxu Zhang, Xinsai Wang, Yuehuan Wang

Proceedings Volume 4550, Image Extraction, Segmentation, and Recognition; (2001) https://doi.org/10.1117/12.441435
Event: Multispectral Image Processing and Pattern Recognition, 2001, Wuhan, China

Abstract

The gradient histogram has unimodality. It has been found from the statistics of the gradient histogram for large numbers of images that the gradient histograms of the object and background can be fitted with the X² distribution density function of different degrees of freedom. A method of automatic estimation of the threshold of gradient image segmentation is presented and proved.

Citation Download Citation

Tianxu Zhang, Xinsai Wang, and Yuehuan Wang "Automatic threshold estimation for gradient image segmentation", Proc. SPIE 4550, Image Extraction, Segmentation, and Recognition, (21 September 2001); https://doi.org/10.1117/12.441435

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