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 |
US8515187(B2) |
申请公布日期 |
2013.08.20 |
申请号 |
US20100681191 |
申请日期 |
2010.04.01 |
申请人 |
STROM JACOB;TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) |
发明人 |
STROM JACOB |
分类号 |
H04N7/50;G06T15/40 |
主分类号 |
H04N7/50 |
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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