Patent
Method and device for coding and recording medium
Hiroki Kishi,裕樹 岸 +1 more
- 06 Apr 2001
9
TL;DR: In this article, a discrete wavelet conversion with an image data was proposed to make coding length of an image coding data to be fixed length according to a coding length which is to be a required reference.
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Abstract: PROBLEM TO BE SOLVED: To make coding length of an image coding data to be fixed length according to a coding length which is to be a required reference SOLUTION: A discrete wavelet conversion part 110 performs discrete wavelet conversion with an image data (step S1501) A factor quantization part 112 performs quantization (step S1502) An entropy coding part 113 entropy-codes a factor quantized value by arithmetic coding (step S1503) If the coding length of a quasi-image coding data is longer than the coding length specified at a specified-image coding data coding-length input part 102 (step S1505), the entropy coded value is deleted in sub-band unit for a specified coding length (step S1506) If the coding length of the quasi-image coded data is shorter than the specified coding length (step S1505), an adjustment bit is added (step S1507)
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Citations
Patent
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TL;DR: In this article, an image sending apparatus consisting of an analyzing syntax of code sequence data, a generator unit generating another code sequence from the analysis result, and a unit to measure the load of the generator unit is provided.
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TL;DR: In this article, an image processing apparatus and a method for generating coded data having a desired data size at a high speed is described. But the coding part partitions a wavelet coefficient of image data into bitplanes and generates coded data of the image data through entropy coding on the wavelet coefficients for each of the bit-planes.
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Device and method for signal decoding
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TL;DR: In this paper, an encoded information operation part 601 performs error detection of basic layer encoded information, 1st extension layer encoder, and 2nd extension encoder by using transmission error detection bits.
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