Bridger,
Check out the documentation on QTCaptureDecopressedvideoOutput. If I
read correctly, you should be able to use the CVImageBufferRef sent to
the delegate method -
captureOutput:didOutputVideoFrame:withSampleBuffer:fromConnection: as
the source for your Core Image based processing. Subsequently, you
can push the results thru an image compression session and save the
results to a file...
Check out the Quicktime-API list archives. This question has been
asked there several time... you may find more/better details in the
responses.
Also, you should check out the CIVideoDemoGL sample code.
later,
douglas
On Apr 4, 2008, at 3:53 AM, Bridger Maxwell wrote:
Hello,
I would like a little help in designing my application, before I
veer off into the wrong direction. I am making an application that
captures input from a webcam using QTKit Capture, runs the image
through a few filters (background subtraction, contrast, high pass)
then runs that image through a blob detection algorithm. I will then
show the final image (with some additional drawing on it to represent
the blobs that were detected) in a QTCaptureView. I am wondering where
I should apply the filters to the video. In the QTRecorder example the
filters are applied right before being displayed to the view in the
method:
- (CIImage *)view:(QTCaptureView *)view willDisplayImage:(CIImage
*)image
Is this what I should use too? I am still reading about Core Image and
Core Video, but in the QTRecorder example Core Video is not used.
Should I not use it either? How do Core Video and QTKit Capture
relate? Your advice will help me to study in the right direction. I am
trying to rewrite the application OpenTouch in Cocoa by May in time
for science fair, so I am fairly pressed for time.
Thank You,
Bridger Maxwell
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