https://stackoverflow.com/questions/9415924/find-eyes-with-glasses-opencv
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:
Glare from my white form on my monitor is now preventing OpenCV from detecting my face:
(和背景有关)
Finally, with my webcam rotated all the up, there is no glare on my eyeglasses and OpenCV can detect my face just fine:
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。