我需要一个函数来检查每个像素，然后返回该像素的x和y [英] I need a function to check each pixel then return the x and y for that pixel

问题描述

我想测试图像中的每个像素，并检查它的颜色，如果它是白色的，那么我必须显示
该像素的相应（x，Y），但直到现在我还没有找到一个帮助我
做类似的事情。所以如果你有这样的功能请告诉我。

I want to test each pixel in an image and check it's color if it is white then I must display the corresponding (x,Y) for that pixel but I didn't find until now a function that help me do something like that. So please if you have such function tell me.

感谢所有

thanks at all

推荐答案

我不知道是否有这样的功能。也许在一些深度图形工具包？它肯定不会是基本语言框架的一部分（例如，在objc或c＃系统中的核心内容）。

I don't know if there is such a function. maybe in some deep graphics toolkit? it'll certainly not be part of a basic language framework (i.e. core stuff in objc or system in c#).

你可能不得不咬紧牙关，只是努力工作

you might have to bite the bullet and just work your way through all of the pixels manually in o(n^2).

foreach horizontal pixel
    foreach vertical pixel
         if(pixel at (horizontal,vertical) is white)
             return (horizontal, vertical)

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