位图检测 [英] Bitmap Detection

问题描述

我现在有一个code，将在本计划采取截图的位图进行搜索，然而，位图存在的截图三次，我希望它点击它发现它的第二次。

I currently have a code that will search for a bitmap in a screenshot taken by this program, however, the bitmap exists three times in the screenshot and I want it to click the second time it finds it.

有没有办法做到这一点？提前很多感谢的......

Is there any way to do this? A lot of thanks in advance...

code：

private Bitmap Screenshot()
{
    Bitmap bmpScreenShot = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);
    Graphics g = Graphics.FromImage(bmpScreenShot);
    g.CopyFromScreen(0, 0, 0, 0, Screen.PrimaryScreen.Bounds.Size);
    return bmpScreenShot;
}

private bool FindBitmap(Bitmap BmpNeedle, Bitmap BmpHaystack, out Point location)
{
    for (int outerX = 0; outerX < BmpHaystack.Width - BmpNeedle.Width; outerX++)
    {
        for (int outerY = 0; outerY < BmpHaystack.Height - BmpNeedle.Height; outerY++)
        {
            for (int innerX = 0; innerX < BmpNeedle.Width; innerX++)
            {
                for (int innerY = 0; innerY < BmpNeedle.Height; innerY++)
                {
                    Color cNeedle = BmpNeedle.GetPixel(innerX, innerY);
                    Color cHaystack = BmpHaystack.GetPixel(innerX + outerX, innerY + outerY);
                    if (cNeedle.R != cHaystack.R || cNeedle.G != cHaystack.G || cNeedle.B != cHaystack.B)
                    {
                        continue;
                    }
                }
            }
            location = new Point(outerX, outerY);
            return true;
        }
    }
    location = Point.Empty;
    return false;
}

public void findImage()
{
    Bitmap bmpScreenshot = Screenshot();
    Point location;
    bool success = FindBitmap(Properties.Resources.xxx, bmpScreenshot, out location);
}

不知道是不是真的有帮助，我想要它做的就是点击它找到的第二位。

Don't know if that really helps, all I want it to do is click the second bitmap it finds.

有一个朋友也建议我分裂成截图电网和这样做的原因，是做网格的方式去还是有可能找到第二位？

A friend did suggest splitting my screenshot into grids and doing it that why, is doing grids the way to go or is it possible to find the second bitmap?

更新：说我有完全相同的图像5我的屏幕上。我想我的程序点击第三位找到。

Update: Say I have 5 of the the exact same images on my screen. I want my program to click the third bitmap it finds.

推荐答案

做的是推出一个计数器，显示图片多少次发现的最简单方法。不知怎的，像这样的：

Easiest way to do would be to introduce a counter that shows how many times the picture was found. Somehow like this:

private bool FindBitmap(Bitmap BmpNeedle, Bitmap BmpHaystack, out Point location)
{
    int countTimesFound = 0;
    for (int outerX = 0; outerX < BmpHaystack.Width - BmpNeedle.Width; outerX++)
    {
        for (int outerY = 0; outerY < BmpHaystack.Height - BmpNeedle.Height; outerY++)
        {
            for (int innerX = 0; innerX < BmpNeedle.Width; innerX++)
            {
                for (int innerY = 0; innerY < BmpNeedle.Height; innerY++)
                {
                    Color cNeedle = BmpNeedle.GetPixel(innerX, innerY);
                    Color cHaystack = BmpHaystack.GetPixel(innerX + outerX, innerY + outerY);
                    if (cNeedle.R != cHaystack.R || cNeedle.G != cHaystack.G || cNeedle.B != cHaystack.B)
                    {
                        continue;
                    }
                }
            }
            countTimesFound++;
            if (countTimesFound == 2)
            {
                location = new Point(outerX, outerY);
                return true;
            }
        }
    }
    location = Point.Empty;
    return false;
}

虽然你真的应该考虑进行图像检测技术。有迹象表明，允许这样做更容易库。

Though you should really look into techniques for image detection. There are libraries that allow doing that easier.

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