关于分类器识别eyeglass问题

https://stackoverflow.com/questions/9415924/find-eyes-with-glasses-opencv

down vot

I, too, was having a similar issue with my OpenCV Windows clients not seeing people with glasses. After a few days of digging and debugging I finally determined that the glare generated from the monitor itself (and my large white form) was causing the problems. This glare was preventing OpenCV from even detecting a face let alone ID it. Why was this? If OpenCV can't see the eyes then it can't see a face.

I don't know if the much smaller Android screen could be causing this same issue or not, but it might be worth your time.

Regarding the Haar cascases... I went through every cascade file I could find including the ones referenced in other responses. The best file, by far, is: haarcascade_frontalface_alt2.xml. For my environment and for all types of people this file is by far the best.

Here's a some examples.

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No glasses and OpenCV can detect my face just fine:

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Glare from my white form on my monitor is now preventing OpenCV from detecting my face:

（和背景有关）

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Finally, with my webcam rotated all the up, there is no glare on my eyeglasses and OpenCV can detect my face just fine:

2down vote

I, too, was having a similar issue with my OpenCV Windows clients not seeing people with glasses. After a few days of digging and debugging I finally determined that the glare generated from the monitor itself (and my large white form) was causing the problems. This glare was preventing OpenCV from even detecting a face let alone ID it. Why was this? If OpenCV can't see the eyes then it can't see a face.

I don't know if the much smaller Android screen could be causing this same issue or not, but it might be worth your time.

Regarding the Haar cascases... I went through every cascade file I could find including the ones referenced in other responses. The best file, by far, is: haarcascade_frontalface_alt2.xml. For my environment and for all types of people this file is by far the best.

Here's a some examples.

---

No glasses and OpenCV can detect my face just fine:

没有眼镜，OpenCV可以很好地检测我的脸部。

Glare from my white form on my monitor is now preventing OpenCV from detecting my face:

我的显示器上的白色眩光导致OpenCV无法检测到我的脸部。

Finally, with my webcam rotated all the up, there is no glare on my eyeglasses and OpenCV can detect my face just fine。

最后，随着我的网络摄像头全部旋转，我的眼镜上没有眩光，OpenCV可以很好地检测到我的脸部。