A design of contrast controller for iimage improvement of multi-gray scale image

Abstract

In this paper, we propose a contrast control for image improvement of multi-gray scale image. The proposed method does not require filed and frame memory for computed data. In addition, we propose that a contrast control can improve image regardless of input gray level. The proposed method can be easily applied to the FPD for real-time processing because of its lower hardware complexity compared to conventional methods. Also it can flexibly control the contrast of input gray level by varying the weight values that control the contrast range. The function of the proposed method has been verified using Synopsys VHDL and computer simulation. In addition, its results show that the proposed method can effect image improvement.