空域内数字图像增强技术研究

摘要

Digital image enhancement technique is studied by point operation, gray histogram transformation and spatial filtering transform. We use linear transformation of the image and non linear transformation of the image. Spatial filtering transform consists of smooth filtering and sharpen filter. It includes that Laplacian operator and sobel operator. Enhancement technology has carried on the experiment in the MATLAB simulation.%本文分别从图像的点运算、灰度直方图变换和空域滤波变换三个方面对数字图像增强技术进行了研究，图像的点运算采用了图像的线性变换和图像的非线性变换，空域滤波变换采用空域平滑滤波和空域锐化滤波，其中空域锐化滤波采用拉普拉斯算子和索贝尔算子，对增强技术在MATLAB中进行了实验仿真。