jpeg_tao - JPEG StillImageDataCompressionStandard...

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May, 1999   JPEG Still Image Data Compression Standard School of Computer Science,  University of Central Florida, VLSI and M-5 Research Group
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    JPEG Introduction - The  background JPEG stands for Joint Photographic Expert Group A standard image compression method is needed to  enable interoperability of equipment from different  manufacturer It is the first international digital image compression  standard for continuous-tone images (grayscale or  color) The history of JPEG – the selection process
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    JPEG Introduction – what’s the  objective? “very good” or “excellent” compression rate,  reconstructed image quality, transmission rate be applicable to practically any kind of continuous- tone digital source image good complexity have the following modes of operations: sequential encoding progressive encoding lossless encoding hierarchical encoding
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    JPEG Overview encoder statistical model entropy encoder Encoder model Source image data compressed image data descriptors symbols model tables entropy coding tables The basic parts of an JPEG encoder
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    JPEG has the following Operation Modes: Sequential DCT-based mode Progressive DCT-based mode Sequential lossless mode Hierarchical mode JPEG entropy coding supports: Huffman encoding Arithmetic encoding JPEG Overview (cont.)
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    JPEG Baseline System
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    JPEG Baseline  System JPEG Baseline system is composed of: Sequential DCT-based mode Huffman coding The basic architecture of JPEG Baseline system Source image data quantizer entropy encoder compressed image data table specification table specification 8 blocks DCT-based encoder statistical model FDCT
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    Frequency sensitivity of Human Visual System frequency 0 sensitivity JPEG Baseline System – Why does it work?
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This note was uploaded on 06/09/2011 for the course CAP 5015 taught by Professor Mukherjee during the Spring '11 term at University of Central Florida.

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jpeg_tao - JPEG StillImageDataCompressionStandard...

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