Hello,I am trying to write a program that will detect bright "blobs" of light in an image and then track those blobs of light. I would be a Cocoa version of OpenTouch at http://code.google.com/p/opentouch/. I am wondering the best way to do this sort of image processing with Cocoa frameworks.
I have a started this app and use QTKit Capture to grab video from the webcam. I get my images through QTCaptureDecompressedVideoOutput as a CIImage. I can apply some filters to the images and display them in a OpenGLView, but I don't know how I should implement the blob tracking. From experience, making an NSBitmapImageRep from the CIImage so I can work with the image data is far too slow, so I can't work with the blob detection library used in OpenTouch. Is it possible, or recommended, to implement the blob tracking as a CIFilter? I read through CIColorTracking sample code, which is very close to what I want to do. However, CIColorTracking simplifies the areas of interest down to one location (where to place the duck). I am having trouble seeing how it could be adapted to track more than one blob of light. Is it possible to make a CIFilter that would have an output NSArray containing the points where the blobs were found? I could see how it would be possible to simplify the image down to an alpha mask of the blobs, but don't know how I would extract the number of blobs and location of each from that image. Also, getting the size of the blob would be desirable. I have done a lot of reading and don't seem to be getting anywhere. Some advice on how to proceed would be greatly appreciated. Thank You, Bridger Maxwell _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
