Image data compression apparatus and method thereof
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United States of America Patent
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-
Jul 22, 2003
Grant Date -
N/A
app pub date -
Oct 15, 1999
filing date -
Oct 19, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This invention makes it possible for a user to know the characteristics of a quantization table used for image compression. An apparatus and method are provided wherein image data compression software displays the compressed image data (expanded image data) according to the JPEG method expanded by a JPEG expansion unit on a display unit 20 through an image display IF 18. Moreover, the image data compression software 5 reflects all values of n.times.n quantization levels included in a quantization table (first quantization table) supplied from a block decoding section used to generate input JPEG data and displays quantization index value to be indexed (first quantization index value before changed) on the display unit 20.
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