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Histogram Equalization

Histogram Equalization. Adviser ： 葉家宏 老師 Presenter ：邱怡雯 Date : 2011/03/28. Outline. Introduction Results Global histogram equalization Local histogram equalization Conclusions. Introduction. Step 1: Find histogram of input image

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Histogram Equalization

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  1. Histogram Equalization Adviser ：葉家宏 老師Presenter ：邱怡雯 Date:2011/03/28

  2. Outline • Introduction • Results • Global histogram equalization • Local histogram equalization • Conclusions

  3. Introduction Step 1: Find histogram of input image Step 2: Calculate the CDF of each gray level value Step 3: Mapping to new gray level table

  4. Results • Global histogram equalization

  5. Results

  6. Results • Global histogram equalization

  7. Results • Local histogram equalization

  8. Results • Local histogram equalization

  9. Conclusions • Histogram equalization can increase the contrast of many images

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