Histogram Intersection
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What will be the value on histogram intersection of a same gray image ,i am getting it as 1 is it true of false,and when i increase the brightness of of the image then doing histogram intersection ia m getting 0.4045 like that a value below 1 is my method is right or wrong?
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  Sean de Wolski
      
      
 2011-4-7
				Can you please show us your code (a small snippet pertaining to this part). I don't understand what you're doing.
回答(1 个)
  Leepakshi
 2025-6-3
        Hi Sunil,  
Yes, your method is correct. When you compute the histogram intersection of a grayscale image with itself, the value should be 1 because the histograms are identical, indicating perfect overlap. When you increase the brightness of the image, the histogram shifts, reducing the overlap with the original histogram, which results in a value less than 1 (e.g., 0.4045). This behaviour is expected and confirms that your histogram intersection calculation is working as intended. 
Please refer to the documentation page of histogram function: https://in.mathworks.com/help/images/ref/imhist.html 
Hope this helps! 
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