Image bilevel thresholding based on multiscale gradient multiplication

Yaobin Zou

doi:10.1117/12.946054

2 June 2012 Image bilevel thresholding based on multiscale gradient multiplication

Yaobin Zou

Proceedings Volume 8334, Fourth International Conference on Digital Image Processing (ICDIP 2012); 83340O (2012) https://doi.org/10.1117/12.946054
Event: Fourth International Conference on Digital Image Processing (ICDIP 2012), 2012, Kuala Lumpur, Malaysia

Abstract

This paper introduces a novel global thresholding approach that exploits the product of gradient magnitude (PGM). The PGM of an image is obtained by multiplying the responses of the first derivative of Gaussian (FDoG) filter at three adjacent space scales. The output threshold is selected as the one that maximizes a new objective function of the gray level variable t . The objective function is defined as the ratio of the mean PGM values of the boundary and nonboundary regions in the binary image obtained by thresholding with variable t . Through analysis of 35 real images from different application areas, our results show that the proposed method can perform bilevel thresholding on the images with different histogram patterns, including unimodal, bimodal, multimodal, or comb-like shape. Its segmentation quality is superior to five popular thresholding algorithms.

Citation Download Citation

Yaobin Zou "Image bilevel thresholding based on multiscale gradient multiplication", Proc. SPIE 8334, Fourth International Conference on Digital Image Processing (ICDIP 2012), 83340O (2 June 2012); https://doi.org/10.1117/12.946054

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available