C#替代setpixel [英] C# alternative to setpixel

问题描述

我已阅读了几篇文章，这些文章是使用setpixel/getpixel的替代方法，但我看不到它们与我的问题有何关系.

I have read through several articles which are alternatives to using setpixel/getpixel but I am not seeing how they relate to my issue.

我有一个彩色图像，该图像(取决于从DB获取的动态值)将每个像素颜色组的颜色更改为新颜色.

I have a multicoloured image which (depending on dynamic values taken from DB) changes the color of each pixel color group to a new color.

假设我希望将Argb值为-989556的所有像素都更改为-16& Argb值为-1331的所有像素均更改为-5383962. 我目前正在查看位图中的每个像素，并检查它们的值，如果它们匹配，则使用setpixel对其进行更改.

Lets say I want all pixels with Argb value of -989556 changed to -16 & all pixels with Argb value of -1331 changed to -5383962. I am currently looking at every pixel in the Bitmap and checking their value, if they match then they are changed using setpixel.

我肯定必须有更好的方法，但是我太昏暗了以至于看不到它！

I am sure there must be a better way but I am being too dim to see it!

推荐答案

看看ImageAttributes. SetRemapTable

Take a look at ImageAttributes.SetRemapTable

另一个示例.

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