EE4206/EE5806 Computing Histograms

EE4206/EE5806 Digital Image Processing

香港 1997 ~ 2007 （特區十年史）
http://hk9707.blogspot.com/

http://www.rthk.org.hk/elearning/dessert/cake.htm

Computing Histograms

quoted from Digital Image Processing : An algorithmic Introduction using java by Burger and Burge (2008)
page. 44

1.Computing the histogram of an 8-bit grayscale image containing instensity values between 0 and 255 is a simple task.

2. All we need is a set of 256 counters, one for each possible intensity value. First, all counters are initialized to zero.

3. Then we iterate through the image I(u,v), determining the pixel value p at each location, and incrementing its corresponding counter by one.

4. At the end, each counter will contain the number of pixels in the image that have corresponding intensity value.