test02_02 - I Frames. (a) Determine how these four pictures...

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Question 1 Figure 1 shows a video sequence consisting of four consecutive pictures (Picture 1 to Picture 4) each made up of sixteen non-overlapping macroblocks. Each macroblock is belonged to one of the five categories [1, 2, 3, 4, 5]. Assuming that the contents of these five classes of macroblocks are very different from each other, and the corresponding number of bits resulting from encoding each of them with JPEG are [100,150,200,250,300], respectively. The video sequence is to be compressed with MPE G II standard with the following type of frames allowed: (i) I (intra) frames encoded directly with JPEG (ii) P (forward predicted) and B (backward predicted) Frames that are predicted from
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Unformatted text preview: I Frames. (a) Determine how these four pictures should be encoded (i.e., whether they should be encoded as I , P or B frames) so that the bit-rate and coding fidelity can be optimized. (b) Based on the above result determine the total number of bits required to encode the four pictures. 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 1 1 2 1 1 1 2 2 2 1 1 1 5 5 5 4 5 5 5 4 5 5 5 3 5 3 5 3 Picture 1 Picture 2 Picture 3 Picture 4 3 3 3 3 3 4 5 3 3 3 3 3 3 5 3 4 Figure 1 Question 2 Describe with diagram(s) the encoding and decoding architecture of a "Three Level Spatial Scalability" profile in MPEG standard....
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test02_02 - I Frames. (a) Determine how these four pictures...

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