Re: Deinterlacing QTCaptureDecompressedVideoOutput
Re: Deinterlacing QTCaptureDecompressedVideoOutput
- Subject: Re: Deinterlacing QTCaptureDecompressedVideoOutput
- From: Robert Douglas <email@hidden>
- Date: Wed, 5 Mar 2008 10:31:22 -0800
I ran in to a similar problem while analyzing incoming HDV images and
I didn't find any simple solution. My approach now is to create a
second CVPixelBuffer with half the number of lines and copy every
second line into that buffer. Or two buffers to get better temporal
resolution. I haven't yet gotten around to writing the field images
to a file so there may be issues with rectangular pixels, but output
to a CIImage-based view works well.
I'd be interested in hearing of other solutions,
Rob
On 5-Mar-08, at 9:11 AM, Bram Loogman wrote:
Hi,
When I use QTCaptureDecompressedVideoOutput to capture a still image
from a QTCaptureSession with a DV camera as input device, the image is
interlaced. Which looks very ugly for moving objects. I basically use
the code from the 'Creating a QTKit Stop or Still Motion Application'
tutorial in the QTKit Capture Programming Guide to get an image buffer
and than store it as a jpeg image.
I looked at the camera settings but it's not possible to change the
shutter speed or something like that. Is there a way to deinterlace
the output from the QTCaptureSession?
Thanks,
Bram
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