Application and Implementation of Image Point Operation in Gray Scale Transformation

摘要

Gray scale transformation is a common image enhancement technology in digital image processing. It can facilitate operations such as strengthening and stretching image contrast, layering gray levels, and inversing pictures so as to highlight image characters and image contrast. Image point operation is a preferable method to transform grey level of images and with various transformation functions, image point operation can be categorized linear functions and non-linear ones. The article sums up circumstances where common point operations are applied and conducts simulation experiment by using MATLAB software before it provides the experiment results.