发明名称 |
Data encoding system |
摘要 |
<p>Pixel data are encoded as grouping element data devoid of end of line indications. Input data analyzing means is arranged to generate digits which are representative both of data distributions and data occurrences and processing means identify groupings of digits of mutually similar value. In one embodiment the image is analyzed for determining the occurrences of value 0, value 1, . . . , value 15 of the pixels and theses values are ranked according to their occurrence figures. Values which occur most frequently are coded with relatively many "0" bits and values which occur less frequently are coded with relatively many "1" bits. The bit planes are then entropy encoded. Also each bit lane can be encoded by encoding the positions and sizes of squares of elements of bit value "1".</p> |
申请公布号 |
GB2332330(B) |
申请公布日期 |
2002.01.16 |
申请号 |
GB19990004338 |
申请日期 |
1998.06.26 |
申请人 |
* THE SECRETARY OF STATE FOR DEFENCE;* QINETIQ LIMITED |
发明人 |
PAUL * CHIPPENDALE;BAHRAM * HONARY;PAUL CHRISTOPHER * ARTHUR;MELVILLE JOHN * MAUNDRELL;IAN * SARGEANT |
分类号 |
G06T9/00;H03M7/30;H03M7/46;H04N1/41;(IPC1-7):H04N1/41 |
主分类号 |
G06T9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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