查看输入图像的信息并分析该图像的特点，显示图像数据的柱状图，确定像素颜色值，调整图像灰度值或颜色映像表-View and analyze the characteristics of the image of the input image information, display the histogram of the image data to determine the pixel color values ​ ​ to adjust the image gray value or color image table