Improved Image Enhancement Algorithm Based on Sine Gray Level Transformation
Yang Dong-tao · Video Engineering · 2012
According to the problem existing in classical sine gray level transformation,an improved image enhancement algorithm is proposed.S-shaped curve constructed by two sine curves is used as transformation function model.The inflection point of the gray scale stretching and the stretching strength parameters are adjustable independently and can be selected adaptively based on the gray distribution of the image,which can improve the quality of the enhanced image effectively.The enhance ability of edge details is strong while the destruction to the information of flat area is little.The distortion of the enhanced image is small.The experimental results show the effectiveness of the algorithm.