Final project is basically taking the intra-prediction and motion compensation in homeworks, and integrate them into a matlab function that take a sequence of images, and code the first frame as...

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Final project is basically taking the intra-prediction and motion compensation in homeworks, and integrate them into a matlab function that take a sequence of images, and code the first frame as INTRA, and subsequent frames as INTER and generate a bitstream according to the quantization specified.


Provide full implementation of the following function:


%function [bitstream]=compressSeq(seq_name, frames, opt)


% seq_name- directory where sequence as f-%d.png are stored


% frames - [1 2 3 4], or [1 3 5], etc, index to the frame numbers in the seq


% options


function [bitstream]=compressSeq(fname, frames)













%function [bitstream, quality]=compressSeq(seq_name, frames, opt)


% seq_name- directory where sequence as f-%d.png are stored


% frames - [1 2 3 4], or [1 3 5], etc, index to the frame numbers in the seq


% opt - options, eg. opt.pel = 0.5;


% bitstream - array of 0/1s


% psnr - n x 1, PSNR


function [bitstream]=compressSeq(seq_name, frames)


f_list = dir(seq_name);


for k=1:length(frames)



%load seq



F{k} = imread(f_list(k).name);


end % for k


% initialize bitstream


bitstream =[]; bit_cnt =0;


% encode first frame as INTRA


[bs, nbits]=getINTRA(F{1}, QP);


bitstream(1:nbits) = bs; bit_cnt=nbits;


% reconstructed from INTRA


G{1}=decodeINTRA(bs, nbits, QP);






% code the rest as INTER


for k=2:length(frames)


[bs, nbits]=getINTER(G(k-1), F(k), QP);


G(k) = decodeINTER(G(k-1), bs, nbits, QP);


% update bitstream


bitstream(bit_cnt+1:bit_cnt+nbits) = bs;


End






% PSNR


for k=1:length(frames)



Quality(k) = psnr(F{k}, G{k});


end











Notice that this program should be able to work with any sequences. TA will check that with arbitrary seq of images.

Answered 3 days AfterMay 03, 2022

Answer To: Final project is basically taking the intra-prediction and motion compensation in homeworks, and...

Uhanya answered on May 07 2022
100 Votes
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