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IMPROVED HISTOGRAM EQUALIZATION FOR
IMAGE CONTRAST ENHANCEMENT
SONAL RAJ, SASWAT RAJ, SANJAY KUMAR
HISTOGRAM EQUALIZATION
Probability Density Function
HISTOGRAM EQUALIZATION
Cumulative Distribution Function
HISTOGRAM EQUALIZATION
Transform Function
Output Image
BI-HISTOGRAM EQUALIZATION
Division into two images based on
mean
BI-HISTOGRAM EQUALIZATION
Probability Density Function
BI-HISTOGRAM EQUALIZATION
Cumulative Distribution Function
PROPOSED ALGORITHM
Modified Probability Density
PROPOSED ALGORITHM
To compare 2 histograms
THAT’S ALL THERE IS 
 Thanks
 Connect with me @
 FB – sonalr2
 Web – http://www.sonalraj.com
 Slideshare – sonal-raj
Improved histogram equalization for image contrast enhancement
Improved histogram equalization for image contrast enhancement
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Improved histogram equalization for image contrast enhancement

This paper proposes a novel enhancement to Histogram Equalization technique by modifying the probability density function with a padding factor to improve background contrast. The proposed method also gives better enhancement results yielding a higher level of detail in the images

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Improved histogram equalization for image contrast enhancement

  1. 1. IMPROVED HISTOGRAM EQUALIZATION FOR IMAGE CONTRAST ENHANCEMENT SONAL RAJ, SASWAT RAJ, SANJAY KUMAR
  2. 2. HISTOGRAM EQUALIZATION Probability Density Function
  3. 3. HISTOGRAM EQUALIZATION Cumulative Distribution Function
  4. 4. HISTOGRAM EQUALIZATION Transform Function Output Image
  5. 5. BI-HISTOGRAM EQUALIZATION Division into two images based on mean
  6. 6. BI-HISTOGRAM EQUALIZATION Probability Density Function
  7. 7. BI-HISTOGRAM EQUALIZATION Cumulative Distribution Function
  8. 8. PROPOSED ALGORITHM Modified Probability Density
  9. 9. PROPOSED ALGORITHM To compare 2 histograms
  10. 10. THAT’S ALL THERE IS   Thanks  Connect with me @  FB – sonalr2  Web – http://www.sonalraj.com  Slideshare – sonal-raj

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