Improve image contrast using the histogram of the matrix obtained in a uniform method of histogram and without noise histogram overlay

In this paper, we approach used in the original paper, which improved the image contrast of the histogram is based on informal we represent. The source of the original histogram using the histogram below with reference to the brightness level and a limited range of the mean and variance improves. As a final total weighted images obtained histogram is consistent with the Uniform Building. By the range of the minimum and maximum values of each individual operator draws the histogram equalization is limited. We use in this method, the matrix obtained from the histogram method. The histogram of the image without using the histogram of uniform methods and Using the histogram method improves the overall image is described and finally we will compare these two methods. [Kangarani Farahani J, Ahmadi R, Asgari Z, Bayat H. Improve image contrast using the histogram of the matrix obtained in a uniform method of histogram and without noise histogram overlay. Life Sci J 2012;9(4):3460-3463]. (ISSN: 1097-8135). http://www.lifesciencesite.com. 513