Selection of the maximum dynamic range of transformed data and the data precision of transform matrices according to the bit depth of input data

Selection of the maximum dynamic range of transformed data and the data precision of transform matrices according to the bit depth of input data

A method of encoding image data, including: frequency-transforming input image data to generate an array of frequency-transformed input image coefficients by a matrix-multiplication process, according to a maximum dynamic range of the transformed data and using transform matrices having a data preci...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Berry, David, Sharman, Karl James, Gamei, James Alexander, Saunders, Nicholas Ian
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:A method of encoding image data, including: frequency-transforming input image data to generate an array of frequency-transformed input image coefficients by a matrix-multiplication process, according to a maximum dynamic range of the transformed data and using transform matrices having a data precision; and selecting the maximum dynamic range and/or the data precision of the transform matrices according to the bit depth of the input image data.