可以查看图像直方图。实现图像的点运算，其中包括图像反色、线形变换、阈值变换、窗口变换、灰度拉伸、灰度均衡。可以显示多幅图像。-You can view the image histogram. Image point operations, including images of anti-color, linear transformation, threshold transform window transform, gray stretch, gray balance. You can