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Unformatted text preview: remains constant during the entire lifetime of a data stream, then it is a strongly regular data stream. This characteristic is typical for an uncompressed digital audio-video stream. Problem 2 Huffman Code: A: 0001 B: 01 C: 1 D: 001 E: 0000 You can get different answers if you swap the order of the nodes childrens. 1 1 1 p(B)=0 .29 p(A)=0 .11 p(ADE)= 0.32 p(A,B,C,D, E)=1 P(ABDE)=0 .61 p(C)=0 .39 p(A,E)=0 .19 p(D)=0. 1333 p(E)=0 .08 1 But the shape of the tree should be the same. Problem 3 The JEPG decompression consists of the following steps. (You need to explain what is exactly done in each step. See the textbook for details. ) (1) Entropy decoding. (5pt) (2) Dequantization. (5pt) (3) Inverse discrete consine transform. (5pt) Problem 4 P-frames B-frames D-frames You should give the details of those frames and prove it give more compression ratio. And any other reasonable reasons...
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This note was uploaded on 11/30/2011 for the course CIS 6930 taught by Professor Staff during the Fall '08 term at University of Florida.
- Fall '08