Improving the sharpness of a non-uniformly illuminated image by an integral mask-filtering approach |
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Authors: | Ching-Chung Yang |
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Institution: | Department of Multimedia Design, Tatung Institute of Commerce and Technology, 253 Mi-Tuo Road, Chiayi City, Taiwan, ROC |
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Abstract: | We demonstrate an extended mask-filtering approach to improve the sharpness of an image with non-uniform illumination. The proposed method comprises two different masks which cope with higher and lower spatial frequencies respectively. By using this integral algorithm, the enhanced image has much better performance than that derived from the conventional technique. |
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Keywords: | Mask-filtering Non-uniform illumination Spatial frequency |
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