Modified gray level difference-based thresholding segmentation and its application in X-Ray welding image |
| |
Authors: | TONG Tong CAI Yan SUN Da-wei WU Yi-xiong |
| |
Institution: | Shanghai Key Laboratory of Materials Laser Processing and Modification,Shanghai Jiaotong University, Shanghai 200240, China |
| |
Abstract: | Thresholding is a popular image segmentation method that often requires as a preliminary and indispensable stage in the computer aided image process, particularly in the analysis of X-ray welding images. In this paper, a modified gray level difference-based transition region extraction and thresholding algorithm is presented for segmentation of the images that have been corrupted by intensity inhomogeneities or noise. Classical gray level difference algorithm is improved by selective output of the result of the maximum or the minimum of the gray level with the pixels in the surrounding, and multi-structuring of neighborhood window is used to represent the essence of transition region. The proposed algorithm could robustly measure the gray level changes, and accurately extract transition region of an image. Comparisons with other approaches demonstrate the superior performance of the proposed algorithm. |
| |
Keywords: | image segmentation transition region gray level difference welding image |
本文献已被 维普 万方数据 SpringerLink 等数据库收录! |