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Speed up queryFrame/imencode

asked 2014-07-15 04:16:12 -0500

Hey guys,

i am writing a programm that takes a picture, encodes it to jpg and sends it over network. This should work as fast as possible. I examined my program and found out that queryFrame needs around 80ms (hd picture with 1280x720) and imencode around 50ms. Is there any way to speed up this functions ? I read about the Cuda possibility but i dont have a Nvidia graphic card.

i tried png as encoding alternative but that takes even longer than jpg

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JPEG is the only way of encoding fast but it gets you quite a big loss in quality. As to speeding up, did you built openCV with TBB capability?

StevenPuttemans gravatar imageStevenPuttemans ( 2014-07-15 04:24:30 -0500 )edit

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answered 2014-07-15 05:42:27 -0500

pthbrk gravatar image

Capture frames in one thread and put them into a queue. From a second thread, pull from queue, encode and dispatch.

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Asked: 2014-07-15 04:16:12 -0500

Seen: 1,196 times

Last updated: Jul 15 '14