发明名称 |
Method, Compressor, Decompressor and Signal Representation for Lossless Compression of Pixel Block Values using Row and Column Slope Codewords |
摘要 |
The invention relates to compression of a pixel block (300) of depth values. A reference codeword (410) is determined as a representation of a reference depth value. A row (420) and a column (430) slope codeword are determined as representations of a basic depth slope for the rows (310) and columns (320) in the block (300), respectively. Representations indicating pixel positions where a slope change occurs along at least a portion of a row (310) or column (320) is determined for at least a subset of the rows (310) or columns (320). A mode codeword (440) is determined as a representation of a set of multiple slope correction patterns. A respect pattern codeword (450) is then selected for rows (310) or columns (320) as identifier of one of the slope correction patterns.
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申请公布号 |
US2011268367(A1) |
申请公布日期 |
2011.11.03 |
申请号 |
US20100681191 |
申请日期 |
2010.04.01 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) |
发明人 |
STROM JACOB |
分类号 |
G06K9/36;G06T15/40 |
主分类号 |
G06K9/36 |
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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