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Unformatted text preview: signals. The DCT transformation de-correlates the signals correlations. ANS.2 When raising the quantizer scale factor, more information is lost; the compression ratio increases and the image quality becomes poorly. When decreasing the quantizer scale factor, the effects reverse. ANS.3 When decreasing the parameter quality , the compress ratio increases and the image quality decreases. Some students use the jpg file as the original file or rewrite the jpg file as the bmp file. Because the image has already lost the information, we can get very small compression ratio after compressing that. ANS.4 I,P,B,D Frames. Pg. 143-144 at the book Media Coding and Content Processing...
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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