Proceedings ArticleDOI
Medical MRI Image Enhancement Based on Curvelet Transform and Fuzzy Algorithm
Qing Hu,Xinyi Min,Wen He +2 more
TLDR
Wang et al. as discussed by the authors proposed a medical MRI image enhancement method based on curvelet transform and fuzzy algorithm, which can effectively suppress noise, enhance the edges and details of the image, and has better visual effects.Abstract:
This paper proposes a medical MRI image enhancement method based on curvelet transform and fuzzy algorithm. First, the MRI image is subjected to curvelet positive transform to obtain the curvelet coefficients at various scales and directions, and then the Monte-Carlo test method is used to estimate each scale noise variance, and then apply hard threshold shrinkage processing to the curvelet coefficients. Finally, the Pal-King algorithm with modified membership function is used to perform fuzzy enhancement on the image after inverse curvelet transformation to obtain the final result image. We selected a brain MRI image to test the algorithm, the experimental results show that compared with the other two enhancement algorithms, the algorithm in this paper has higher PSNR and CONTRAST, which can effectively suppress noise, enhance the edges and details of the image, and has better visual effects.read more
References
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Journal ArticleDOI
The curvelet transform for image denoising
TL;DR: In this paper, the authors describe approximate digital implementations of two new mathematical transforms, namely, the ridgelet transform and the curvelet transform, which offer exact reconstruction, stability against perturbations, ease of implementation, and low computational complexity.
Curvelets: A Surprisingly Effective Nonadaptive Representation for Objects with Edges
TL;DR: The basic issues of efficient m-term approximation, the construction of efficient adaptive representation, theConstruction of the curvelet frame, and a crude analysis of the performance of curvelet schemes are explained.
Image enhancement using smoothing with fuzzy sets
Sankar K. Pal,R. A. King +1 more
TL;DR: A model for grey-tone image enhancement using the concept of fuzzy sets is suggested and the reduction of the "index of fuzziness" and "entropy" for different enhanced outputs (corresponding to different values of fuzzifiers) is demonstrated.
Journal Article
Image enhancement algorithm based on fuzzy set theory
TL;DR: A new image enhancement algorithm based on fuzzy set theory was proposed that not only can improve the contrast of infrared images, but also can prominent image's edge and gray information.
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