Hi Robert, I just tried to save the captured image to a mov file with the length of one frame and than open it as a QTMovie and export it again as an jpeg. When I look at the QTMovie the image it's ok, but the exported image looks the same as the image captured with an image buffer. The strange thing is when i use quicktime to capture and export a frame it looks fine, so maybe it has something to do with the settings of the DV component? I'm very new in this cocoa programming so it's just guessing. Could you show me an example using the CVPixelBuffer so I know the other possibilities before I continue with this approach?
Thanks, Bram 2008/3/5, Robert Douglas <[EMAIL PROTECTED]>: > 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 > > > _______________________________________________ > > > > 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/rdouglas%40mac.com > > > > This email sent to [EMAIL PROTECTED] > > _______________________________________________ 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]
