Hello, I use QTKit to grab an image from my webcam. Then i need to resize it into a smaller image.
Going from My CIImage, i use two filter "CILanczosScaleTransform" and "CICrop" to get my image at the correct size. (640x480 to 320x240+crop). Doing only that, my CPU go up to 30% of usage while it is at 12% without the transformations. I have a set of C function that works on Bitmaps that is very specialized to what i m doing, and would allow me to earn a lots of unnecessary transformations (on windows that makes my CPU usage to raise to +5% max only) ... but here the problem, the rendering of CIImage to a bitmap is worse than the filter usage. here my question, Is there a way of accessing directly the CIImage representation so that i can pick my pixels very quickly ? the aim is to be very efficient of course ... thanks to all that will help me. -- Dev _______________________________________________ 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 arch...@mail-archive.com
