@Article{, title={Images Enhancemcut By using the Histogram}, author={Asmaa s:rdiq and La1'la Hussien and Amel H.Abbas}, journal={Journal of College of Education مجلة كلية التربية}, volume={}, number={3}, pages={38-49}, year={2006}, abstract={An image histogram is a chartthat sho、vs the distribution ofintensities inan irnage.The irnage histogram mnction creates plot by making n equaHyspaced bins each representing a range of data values,and then calculates thentlmber of pixels within each range.Image enhancement that moditting the value of picture elements is aclassical method for iFnprOVing the visual perception .Many digitalenhancement techniques have been used in order to optinlize the、.isual qualityof image for human or machine vision throtlgh llistogranl nlodi「lcations. Allthese rnethods try to enhance the contrast ofthe input inlage、vithout rneasuringthe contrast itsel■ In this paper t、vo histogra11l nlodi「lcation methods areintroduced the flrst onc(histOgram stretching)depending on the maximum andminnlum brightness value in the image,while the second onc(histOgraluequalization) depend on the re-arrange the brightness values in the image. Theexperimental results indicate that the images more brightness after applying thetwo enhancement methods and the quality of the processed images is measuredsubjectively

} }