Gray and Color Image C.ontrast Enhanceme11t by the Cllrvelet Transform
نویسندگان
چکیده
We present in this paper a new method for con trast enhancement based on the curvelet transform. The curvelet transform represents edges better than wavelets, and is therefore well-suited for multiscale edge enhancement. We compare this approach with enhancement based on the wavelet transform, and the Multiscale Retinex. In a range of examples, we use edge de tection and segmentation, among other processing applications, to provide for quantitative comparative evaluation. Our find ings are that curvelet based enhancement out-performs other enhancement methods on noisy images, but on noiseless or near noiseless images curvelet based enhancement is not remarkably better than wavelet based enhancement. KeywordsWavelets, Ridgelets, CUl'velets, Contrast Enhance ment.
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