屏幕取色 鼠标直接获取鼠标位置的颜色值 一个很实用的例子-Color

完成了图像的加载和保存，获取图像在鼠标所在位置的像素值的像素值-The pixel value of the completion of the loading and saving of the image, obtaining the pixel value of the image in the location of the mouse

如何结合opencv打开一张图片；以及如何获取到vector中的Mat数据，捕获鼠标移动时，当前的坐标位置- How to combine opencv open a picture and how to get to the vector data in the Mat, capturing mouse movements, the current coordinate position