Energy compaction - PowerPoint PPT Presentation

Lossy Image Compression: a Quick Tour of JPEG Coding Standard

Lossy Image Compression: a Quick Tour of JPEG Coding Standard. Why lossy for grayscale images? Tradeoff between Rate and Distortion Transform basics Unitary transform and properties Quantization basics Uniform Quantization and 6dB/bit Rule JPEG=T+Q+C

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988 views • 65 slides

1-D DISCRETE COSINE TRANSFORM DCT

1-D DISCRETE COSINE TRANSFORM DCT. 1-D INVERSE DISCRETE COSINE TRANSFORM IDCT. 1-D Basis Functions N= 8. 1-D Basis Functions N= 16. Example: 1D signal. 2-D DISCRETE COSINE TRANSFORM DCT. ADVANTAGES. Notice that the DCT is a real transform.

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2.09k views • 18 slides

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