java robot.getPixelColor(x，y)问题 [英] java robot.getPixelColor(x,y) question
问题描述
首先编写代码:
for (int i = 0; i < 25; i++)
{
robot.delay(1000);// wait 1 second
Color pixel_4 = robot.getPixelColor(x-15, 30);
System.out.println(pixel_4.getRed() + " " + pixel_4.getGreen() + " " + pixel_4.getBlue());
}
那不是我使用的确切代码，但是会产生相同的情况: 如果我在程序中运行此循环，并且整个循环的屏幕完全相同，则有时会输出以下内容:
That is not the exact code I am using, but it produces the same situation: If I run this loop in a program and the screen is precisely the same for the entire loop it will occasionally output something like:
255 255 255
255 255 255
...(相同颜色)
...
...
...
...
...
...
...
124 142 012< ----这就是问题
124 142 012 <---- this is the issue
255 255 255
255 255 255
据我所知，屏幕是静态的，但是robot.getPixelColor(x，y)方法返回了一组错误的值.
As far as I can tell, the screen is static, but the robot.getPixelColor(x,y) method returned a false set of values.
有人对此有任何经验或直觉吗?有什么我可以阻止的事情吗?
Does anyone have any experience or intuition about this? Is there anything I can do to prevent it from happening?
谢谢
推荐答案
出于明显的原因；您的逻辑有问题.这是一个想法:
For obvious reasons; there is something wrong with your logic. Here is one thought:
假设您有一个宽度为200像素的屏幕，请假设您的算法检查的是屏幕边界(即201、0)之外的像素的颜色. robot.getPixelColor返回什么?它将返回超出图像范围的颜色，或者返回某种无效的结果.
Suppose you have a screen with width 200px, lets suppose your algorithm checks the color of a pixel that is outside of the bounds of the screen (i.e. 201, 0). What does robot.getPixelColor return? It would either return a color outside of the bounds of the image or return some kind of invalid result.
请确保您的算法检查图像约束范围内的有效像素；这可能是导致结果不清楚的原因.
Having siad that, ensure that your algorithm checks valid pixels within the constraints of your image; this may be the cause of the obscurity of your results.
希望这有助于或导致适当的解决方案
Hope this helps or leads to an appropriate solution
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