A new method for fast image Histogram calculation

Image Histogram is useful in wide range of applications, it shows the image intensity distribution which is used in many image processing techniques. The processing time is very critical in real time applications, so the optimized and robust techniques are preferred. This paper is discussing a simple method for calculating histogram of the image with sampled Histogram which is similar to the histogram of the hall image; moreover the number of calculated pixels and processing time is less than calculating the hall image Histogram. The method used in this approach is by selecting sample pixels form the hall image and then calculating the intensity distribution of the selected pixels. The results of the simulation show same histogram of the reference image and less processing time.