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Discussion Groups | Image Signal Processing | question about GOPS..??.

Technical Discussions related to Image Processing (image coding, compression, digital effects, mpeg, etc)

  

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question about GOPS..??. - Khubaib - May 29 14:59:00 2003



Dear members !
i have some questions.
1) What is GOPS..?? (it is Group of pictures).. How many frames
(thus, 16 x 16 macroblocks) are there in a GOP..? Any standard..?
2) Is 4CIF (704x576) pixels a standard image format..?.
khubaib





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Re: question about GOPS..??. - Yair Hougui - May 30 12:58:00 2003

Khubaib ,

 A GOP is a sequence of frames where the first frame is an Intra frame and the last frame is a Inter frame.
The frame that follows the last Inter frame is an Intra frame thate iniitates the next GOP.
Macroblocks make up a frame

4CIF is a standard resolution.

For more information you can look at the MPEG video standards , H.261 or H.263. They all explain the structure
of GOP, frames and slice.

A good statring point is
http://www.mpeg.org

look for te tutotials.

yair

Khubaib wrote:
Dear members !
i have some questions.
1) What is GOPS..?? (it is Group of pictures).. How many frames
(thus, 16 x 16 macroblocks) are there in a GOP..? Any standard..?
2) Is 4CIF (704x576) pixels a standard image format..?.
khubaib

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