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Improved histogram equalization for image contrast enhancement

Date post:	08-Aug-2015
Category:	Engineering
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IMPROVED HISTOGRAM EQUALIZATION FOR IMAGE CONTRAST ENHANCEMENT SONAL RAJ, SASWAT RAJ, SANJAY KUMAR

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Page 1: Improved histogram equalization for image contrast enhancement

IMPROVED HISTOGRAM EQUALIZATION FOR IMAGE CONTRAST ENHANCEMENTSONAL RAJ, SASWAT RAJ, SANJAY KUMAR

Page 2: Improved histogram equalization for image contrast enhancement

HISTOGRAM EQUALIZATION

Probability Density Function

Page 3: Improved histogram equalization for image contrast enhancement

HISTOGRAM EQUALIZATION

Cumulative Distribution Function

Page 4: Improved histogram equalization for image contrast enhancement

HISTOGRAM EQUALIZATION

Transform Function

Output Image

Page 5: Improved histogram equalization for image contrast enhancement

BI-HISTOGRAM EQUALIZATION

Division into two images based on mean

Page 6: Improved histogram equalization for image contrast enhancement

BI-HISTOGRAM EQUALIZATION

Probability Density Function

Page 7: Improved histogram equalization for image contrast enhancement

BI-HISTOGRAM EQUALIZATION

Cumulative Distribution Function

Page 8: Improved histogram equalization for image contrast enhancement

PROPOSED ALGORITHM

Modified Probability Density Function

Page 9: Improved histogram equalization for image contrast enhancement

PROPOSED ALGORITHM

To compare 2 histograms

Page 10: Improved histogram equalization for image contrast enhancement

Page 11: Improved histogram equalization for image contrast enhancement

Page 12: Improved histogram equalization for image contrast enhancement

THAT’S ALL THERE IS

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