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Note for Digital Image Processing - DIP By Vj singh

  • Digital Image Processing - DIP
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Vj Singh
Vj Singh
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DIGITAL IMAGE PROCESSING IMAGE ENHANCEMENT Histogram Processing by Paresh Kamble

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Histogram Processing Histogram: It is a plot of frequency of occurrence of an event. freq. of occurrence 0 1 2 3 event

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Histogram Processing  Histogram of images provide a global description of their appearance.  Enormous information is obtained.  It is a spatial domain technique.  Histogram of an image represents relative frequency of occurrence of various gray levels.  Histogram can be plotted in two ways:

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Histogram Processing  First Method:  X-axis has gray levels & Y-axis has No. of pixels in each gray levels. Gray Level 0 1 2 3 4 5 6 No. of Pixels (nk) 40 20 10 15 10 3 2 nk 40 30 20 10 0 1 2 3 Gray Levels 4 5 6

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