How to create Haar Cascade xml file to use in OpenCV

Question

If you are familiar with OpenCV library  you know what Haar Cascade image object detection is  By image object detection I mean  like human face detection or something else  I have some Haar Cascade XMLs for face detection  but I don t know how to create my own  I want to create Haar Cascade XMLs to detect simple bright circle light sources  i e  flashing infrared light from TV remote control    So  how do I create a Haar Cascade   xml file  to use in OpenCV

User · Accepted Answer

I think this might be helpful   http   note sonots com SciSoftware haartraining html

User · Answer

If you are interested to detect simple IR light blob through haar cascade  it will be very odd to do  Because simple IR blob does not have enough features to be trained through opencv like other objects  face  eyes nose etc   Because IR is just a simple light having only one feature of brightness in my point of view  But if you want to learn how to train a classifier following link will help you alot   http   note sonots com SciSoftware haartraining html  And if you just want to detect IR blob  then you have two more possibilities  one is you go for DIP algorithms to detect bright region and the other one which I recommend you is you can use an IR cam which just pass the IR blob and you can detect easily the IR blob by using opencv blob functiuons  If you think an IR cam is expansive  you can make simple webcam to an IR cam by removing IR blocker  if any  and add visible light blocker i e negative film  floppy material or any other  You can check the following link to convert simple webcam to IR cam   http   www metacafe com watch 385098 transform your webcam into an infrared cam

User · Answer

How to create CascadeClassifier    Open this link   https   github com opencv opencv tree master data haarcascades Right click on where you find  quot haarcascade frontalface default xml quot  Click on  quot Save link as quot  Save it into the same folder in which your file is  Include this line in your file face cascade   cv2 CascadeClassifier cv2 data haarcascades    quot haarcascade frontalface default xml quot

User · Answer

This might be helpful  http   opencvuser blogspot in 2011 08 creating-haar-cascade-classifier-aka html

[xml] How to create Haar Cascade (.xml file) to use in OpenCV?

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