彩色图像转换为灰度图 基于VB的代码 VB将彩色图像转换为灰度图，设定所有Pixel的改变不立即在pictureBox上显示，为图片框载入图片，点击“转换为灰度”按钮，即可完成转换。-Color images are converted to grayscale based on VB code VB convert a color image to grayscale, set to change all Pixel is not immediately on the pictureBox displayed as a picture frame to load pictures, click on " Convert to Grayscale"　button to complete the conversion.