更改图像颜色 [英] Change Color of Image

问题描述

我有一个32bpp的黑白图像，但是我想将其颜色更改为某种特定的颜色，例如红色或绿色...我搜索并测试了许多.net应用程序，但是'em都无法做到这一点.因此，有什么想法吗?

I''ve a black and white image with 32-bpp but I want to change its color to some specific like red or green...I searched and tested many .net applications but none of ''em could do that. So any idea ?

推荐答案

没有真正的方法可以准确地做到这一点，因为灰度图像已丢弃了颜色信息.您可以很容易地进行颜色清洗，我的图像处理文章介绍了如何做到这一点，但是您不会将灰度转换回真实，准确的颜色.

There is no real way to do this accurately, a greyscale image has discarded color info. You can do a color wash easy enough, my image processing articles show how to do that, but you won''t turn greyscale back into real, accurate color.

注意:这仅仅是安全代码，而且速度会很慢.稍后我将其更改为不安全，但以下代码仅用于显示该想法;).

NOTE : This is just safe code and will be slow. I will change it to unsafe later but the following code is just for showing the idea ;).

void ChangeColor(Bitmap image)
{
    for (int x = 0; x < image.Width; x++)
    {
        for (int y = 0; y < image.Height; y++)
        {
            Color c = image.GetPixel(x, y);
            Color nc = Color.FromArgb(c.A, c.R, 0, 0);
            image.SetPixel(x, y, nc);
        }
    }
}

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