A New Image Enhancement Algorithm Based on Bidirectional Diffusion


Zhonghua Wang, Xiaoming Huang, Faliang Huang, Journal of Information Processing Systems Vol. 16, No. 1, pp. 49-60, Feb. 2020

10.3745/JIPS.04.0155
Keywords: Backward Diffusion, Forward Diffusion, image enhancement, Local Feature
Fulltext:

Abstract

To solve the edge ringing or block effect caused by the partial differential diffusion in image enhancement domain, a new image enhancement algorithm based on bidirectional diffusion, which smooths the flat region or isolated noise region and sharpens the edge region in different types of defect images on aviation composites, is presented. Taking the image pixel’s neighborhood intensity and spatial characteristics as the attribute descriptor, the presented bidirectional diffusion model adaptively chooses different diffusion criteria in different defect image regions, which are elaborated are as follows. The forward diffusion is adopted to denoise along the pixel’s gradient direction and edge direction in the pixel’s smoothing area while the backward diffusion is used to sharpen along the pixel’s gradient direction and the forward diffusion is used to smooth along the pixel’s edge direction in the pixel’s edge region. The comparison experiments were implemented in the delamination, inclusion, channel, shrinkage, blowhole and crack defect images, and the comparison results indicate that our algorithm not only preserves the image feature better but also improves the image contrast more obviously.


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Cite this article
[APA Style]
Zhonghua Wang, Xiaoming Huang, & Faliang Huang (2020). A New Image Enhancement Algorithm Based on Bidirectional Diffusion. Journal of Information Processing Systems, 16(1), 49-60. DOI: 10.3745/JIPS.04.0155.

[IEEE Style]
Z. Wang, X. Huang and F. Huang, "A New Image Enhancement Algorithm Based on Bidirectional Diffusion," Journal of Information Processing Systems, vol. 16, no. 1, pp. 49-60, 2020. DOI: 10.3745/JIPS.04.0155.

[ACM Style]
Zhonghua Wang, Xiaoming Huang, and Faliang Huang. 2020. A New Image Enhancement Algorithm Based on Bidirectional Diffusion. Journal of Information Processing Systems, 16, 1, (2020), 49-60. DOI: 10.3745/JIPS.04.0155.