专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2012128701A1 ENCODER, DECODER FOR SCANNING A PICTURE AND METHODS THEREOF 审中-公开
标题翻译：编码器，用于扫描图像的解码器及其方法
公开(公告)号：WO2012128701A1
公开(公告)日：2012-09-27
申请号：PCT/SE2012/050285
申请日：2012-03-15
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , SJÖBERG, Rickard , SAMUELSSON, Jonatan , WENNERSTEN, Per
发明人： SJÖBERG, Rickard , SAMUELSSON, Jonatan , WENNERSTEN, Per
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/61 , H04N19/129 , H04N19/176 , H04N19/46
摘要： The present invention relates to an encoder, a decoder and methods thereof for increasing the coding efficiency. The coding efficiency is achieved by introducing Zscan blocks and scanning the Zscan blocks horizontally, row by row, in the picture e.g. by processing the coding units in a Z-scan order within each Zscan block. The Zscan block size is equal to or smaller than the maxsize of the macroblocks and the Zscan block size is larger than the current macroblock size.
摘要翻译：本发明涉及一种用于提高编码效率的编码器，解码器及其方法。编码效率通过引入Zscan块并在图像中逐行扫描Zscan块来实现。通过在每个Zscan块内以Z扫描顺序处理编码单元。 Zscan块大小等于或小于宏块的maxsize，并且Zscan块大小大于当前宏块大小。

2. 发明申请

WO2012082029A1 METHOD AND DEVICE FOR STORING A COMPRESSION RATIO INDICATION IN A PIXEL VALUE BUFFER IN TILE ENCODING 审中-公开
标题翻译：用于在层编码中存储像素值缓冲器中的压缩比率的方法和装置
公开(公告)号：WO2012082029A1
公开(公告)日：2012-06-21
申请号：PCT/SE2010/051380
申请日：2010-12-14
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , STRÖM, Jacob , WENNERSTEN, Per
发明人： STRÖM, Jacob , WENNERSTEN, Per
IPC分类号： H04N7/26 , G06T9/00
CPC分类号： G06T9/005 , G06T9/00 , H04N19/428 , H04N19/46 , H04N19/91
摘要： A tile (1) of pixels (6) is encoded by variable length encoding blocks (3-9) of pixels (10) constituting different subsets of the tile (1) to form sequences of symbols (23-29) as encoded representations of the pixel values. A respective size indication (33-39, 52, 54, 56, 58) is determined for each set (12, 14) of at least block. A size indication (33-39, 52, 54, 56, 58) is representative of a compression ratio of a combined sequence (23-29, 51, 53, 55, 57) corresponding to the at least one sequence of symbols (23- 29) obtained for the at least one block of the set (12, 14). The combined sequences (23-29, 51, 53, 55, 57) are arranged in a pixel value buffer (80) in a buffer memory (20). The size indication (32-39, 52, 54, 56, 58) determined for a given set (12, 14) is also stored in the pixel value buffer (80) in the buffer memory (20) to precede, according to a reading order of the pixel value buffer (80), the combined sequence (23-29, 51, 53, 55, 57) of the given set (12, 14).
摘要翻译：像素（6）的瓦片（1）由构成瓦片（1）的不同子集的像素（10）的可变长度编码块（3-9）编码，以形成符号序列（23-29），作为像素值。对于至少块的每个集合（12,14）确定相应的大小指示（33-39,52,54,56,58）。尺寸指示（33-39,52,54,56,58）表示对应于至少一个符号序列的组合序列（23-29,51,53,55,57）的压缩比（23 - 29），用于所述组（12,14）的所述至少一个块获得。组合序列（23-29,51,53,55,57）被布置在缓冲存储器（20）中的像素值缓冲器（80）中。对于给定集合（12,14）确定的尺寸指示（32-39,52,54,56,58）也存储在缓冲存储器（20）中的像素值缓冲器（80）中，根据像素值缓冲器（80）的读取顺序，给定组（12,14）的组合序列（23-29,51,53,55,57）。

3. 发明申请

WO2012096622A1 METHODS AND DEVICES FOR INTRA CODING OF VIDEO 审中-公开
标题翻译：视频内部编码的方法和设备
公开(公告)号：WO2012096622A1
公开(公告)日：2012-07-19
申请号：PCT/SE2012/050017
申请日：2012-01-12
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , SJÖBERG, Rickard , SAMUELSSON, Jonatan , WENNERSTEN, Per
发明人： SJÖBERG, Rickard , SAMUELSSON, Jonatan , WENNERSTEN, Per
IPC分类号： H04N7/34 , H04N7/26
CPC分类号： H04N19/59 , H04N19/159 , H04N19/174 , H04N19/176 , H04N19/182 , H04N19/50
摘要： Encoder, decoder and methods for intra coding of video. The method in the decoder relates to decoding of an intra coded block IZ having a number N of neighboring blocks CU 1 -CU N . When at least one block CU k of the number of neighboring blocks is unavailable for intra prediction, pixel values for spatial positions covered by CU k are estimated based on at least one pixel value of at least one of blocks CU k-m and CU k+p within the range [CU 1 -CU k-1 , CUk+1-CU N ] of blocks, which is available for intra prediction. Further, the block IZ is decoded, using the estimated pixel values for prediction, thus generating a block Z of pixels. k, m and p are integers, and 1 ≤ k ≤ N; 1 ≤ m
摘要翻译：编码器，解码器和视频内编码方法。解码器中的方法涉及具有相邻块CU1-CUN的数目N的帧内编码块IZ的解码。当相邻块的数量的至少一个块CU k不可用于帧内预测时，基于CUK-m和CUk + p中的至少一个块CUk-m和CUk + p中的至少一个的像素值来估计由CUK覆盖的空间位置的像素值范围[CU1-CUK-1，CUK + 1-CUN]，可用于帧内预测。此外，使用估计的用于预测的像素值来解码块IZ，从而生成像素的块Z。 k，m和p是整数，1 = k = N; 1 = m

4. 发明申请

WO2012050489A1 TEXTURE COMPRESSION AND DECOMPRESSION 审中-公开
标题翻译：纹理压缩和分解
公开(公告)号：WO2012050489A1
公开(公告)日：2012-04-19
申请号：PCT/SE2010/050689
申请日：2010-06-18
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , STRÖM, Jacob , WENNERSTEN, Per
发明人： STRÖM, Jacob , WENNERSTEN, Per
IPC分类号： G06T9/00 , H04N1/415
CPC分类号： G09G5/00 , G06T9/00 , H04N1/64 , H04N19/105 , H04N19/14 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/42 , H04N19/90 , H04N19/94
摘要： A compressing of a texel block (10) consisting of two texel sub-blocks (12, 14) involves determining respective value codewords (31, 32) and table codewords (33, 34) for the two texel sub-blocks (12, 14). The value codewords (31, 32) represent respective base texel values and the table codewords (33, 34) represent respective modifier sets comprising multiple value modifiers for modifying the base texel value associated with the given texel sub-block (12, 14). Each texel (20) in the texel block (10) is assigned a texel index associated with one of the value modifiers of the modifier set for the texel sub-block (12, 14) to which the texel (20) belongs or indicates that the base texel value of the other texel sub-block (12, 14) is to be used for the texel (20).
摘要翻译：由两个纹素子块（12,14）组成的纹理块（10）的压缩涉及确定两个纹素子块（12,14）的相应值码字（31,32）和表码字（33,34））。值码字（31,32）表示相应的基本纹素值，并且表码字（33,34）表示包括用于修改与给定纹素子块（12,14）相关联的基本纹素值的多值修饰符的各个修饰符集合。为纹素块（10）中的每个纹理（20）被分配一个纹素索引，其与纹素（20）所属的纹素子块（12,14）的修饰符集的修饰符之一相关联，或者表示另一个纹素子块（12,14）的基本纹素值将用于纹素（20）。

5. 发明申请

WO2009093947A1 PIXEL BLOCK PROCESSING 审中-公开
标题翻译：像素块处理
公开(公告)号：WO2009093947A1
公开(公告)日：2009-07-30
申请号：PCT/SE2008/051038
申请日：2008-09-17
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , STRÖM, Jacob , AKENINE-MÖLLER, Tomas , WENNERSTEN, Per , RASMUSSON, Jim
发明人： STRÖM, Jacob , AKENINE-MÖLLER, Tomas , WENNERSTEN, Per , RASMUSSON, Jim
IPC分类号： H04N7/26 , G06T9/00
CPC分类号： G06T9/00 , H04N19/105 , H04N19/124 , H04N19/14 , H04N19/15 , H04N19/152 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/192 , H04N19/426 , H04N19/46 , H04N19/593 , H04N19/98
摘要： A pixel block (300) is losslessly compressed into a candidate compressed block. If the bit length of the candidate block exceeds a threshold value, the property values of the pixels (310-317) in the block (300) are quantized and the quantized values are losslessly compressed into a new candidate compressed block. The procedure is repeated until a candidate compressed block having good image quality and a bit length below the threshold value is found. A compressed representation (400) of the block (300) is determined based on the found candidate compressed block (420) and an identifier (410) of the used quantization parameter.
摘要翻译：像素块（300）被无损压缩成候选压缩块。如果候选块的比特长度超过阈值，则对块（300）中的像素（310-317）的属性值进行量化，并将量化值无损压缩为新的候选压缩块。重复该过程，直到找到具有良好图像质量和位长度低于阈值的候选压缩块。基于所找到的候选压缩块（420）和使用的量化参数的标识符（410）来确定块（300）的压缩表示（400）。

6. 发明申请

WO2009035410A3 DEPTH BUFFER COMPRESSION 审中-公开
标题翻译：深度缓冲区压缩
公开(公告)号：WO2009035410A3
公开(公告)日：2009-06-11
申请号：PCT/SE2008051027
申请日：2008-09-12
申请人： ERICSSON TELEFON AB L M , WENNERSTEN PER , STROEM JACOB
发明人： WENNERSTEN PER , STROEM JACOB
IPC分类号： G06T9/00 , G06T15/40
CPC分类号： G06T9/00 , G06T15/405 , H04N19/119 , H04N19/12 , H04N19/15 , H04N19/176 , H04N19/42 , H04N19/46
摘要： Device, computer readable medium, and method for selecting compression modes to be applied in a depth buffer (20). The method includes obtaining values corresponding to a tile (30) of the depth buffer (20), selecting a first compression mode (34) from a first plurality of compression modes, compressing the values of the tile (30), writing the compressed values into a first block, based on the first mode (34), and using a preset number of primary bits (34) to store information related to at least one of the first mode (34) and a compression size of the first block, selecting a set of secondary compression modes (32) from a second plurality of compression modes, determining a number of sub-tiles (28), that make up the tile (30), compressing values of the sub-tiles, writing the compressed values into a second block, based on the set of secondary modes (32), and using the same preset number of primary bits (34) to store information related to at least one of the set of secondary modes (32) and a compression size of the second block, comparing the compression size of the tile (30) to the compression size of the sub-tiles (28), choosing the first mode (34) or the set of secondary modes (32) and a corresponding tile size based on a result of the comparing, and storing the selected compressed tile or sub-tiles into the depth buffer (20) and writing into the preset number of primary bits (34) information related to the chosen first mode (34) or set of secondary compression modes (32) or a corresponding size.
摘要翻译：设备，计算机可读介质和用于选择要在深度缓冲器（20）中应用的压缩模式的方法。该方法包括获得与深度缓冲器（20）的瓦片（30）对应的值，从第一多个压缩模式中选择第一压缩模式（34），压缩瓦片（30）的值，将压缩值基于第一模式（34），并使用预设数量的主位（34）来存储与第一模式（34）和第一模块（34）中的至少一个相关的信息和第一模块的压缩大小的第一块，选择来自第二多个压缩模式的一组二次压缩模式（32），确定构成瓦片（30）的子图块（28）的数量，压缩子瓦片的值，将压缩值写入第二块，基于所述二次模式集合（32），并且使用相同的预设数量的主位（34）来存储与所述一组次模式（32）中的至少一个相关的信息，以及所述第二模式第二块，将瓦片（30）的压缩尺寸与压缩比例进行比较（28）的e，基于比较结果选择第一模式（34）或二次模式集合（32）和相应的块大小，并将选择的压缩块或子块存储到深度缓冲器（20）并且写入与所选择的第一模式（34）或一组辅助压缩模式（32）相关的预设数量的主位（34）信息或相应的大小。

7. 发明申请

WO2012169952A2 SIGNALING OF END OF SLICES 审中-公开
标题翻译：信息结束信号
公开(公告)号：WO2012169952A2
公开(公告)日：2012-12-13
申请号：PCT/SE2012050308
申请日：2012-03-21
申请人： ERICSSON TELEFON AB L M , SJOEBERG RICKARD , WENNERSTEN PER
发明人： SJOEBERG RICKARD , WENNERSTEN PER
IPC分类号： H04N7/26
CPC分类号： H04N19/174 , H04N19/46 , H04N19/61 , H04N19/70
摘要： A slice granularity representing a hierarchical level for slice boundary alignment in a picture (1) comprising at least one slice (10, 12) of coding units (20-56) is used together with coordinates of the coding units (20-56) in a slice (10, 12) to determine those coding units (30, 46A, 46B, 36) that potentially could constitute an end of a slice (10, 12). Each coding unit (30, 46A, 46B) except one of the determined coding units (30, 46A, 46B, 36) is assigned an end-of-slice flag with a first value, while the one determined coding unit (36) gets an end-of-slice flag with a second value. The end-of-slice flags are used during decoding for identifying the end of a slice (10, 12). The embodiments provide an efficient end-of-slice flag signaling by merely assigning such flags to some of the coding units (30, 46A, 46B, 36) in the picture (1), while other coding units need no associated flag.
摘要翻译：与包括编码单元（20-56）的至少一个切片（10,12）的图像（1）中的用于切片边界对准的分级水平的切片粒度与编码单元（20-56）的坐标一起使用切片（10,12），用于确定可能构成切片（10,12）的末端的那些编码单元（30,46A，46B，36）。除了所确定的编码单元（30,46A，46B，36）之一之外的每个编码单元（30,46A，46B）被分配具有第一值的片断结束标志，而一个确定的编码单元（36）获得具有第二个值的片断结束标志。切片结束标志在解码期间用于识别切片的末端（10,12）。这些实施例通过仅向图像（1）中的一些编码单元（30,46A，46B，36）分配这样的标志来提供有效的片尾标志信号，而其他编码单元不需要相关联的标志。

8. 发明申请

WO2012146320A1 ENCODER, DECODER AND METHODS THEREOF FOR TEXTURE COMPRESSION 审中-公开
标题翻译：编码器，解码器及其对于纹理压缩的方法
公开(公告)号：WO2012146320A1
公开(公告)日：2012-11-01
申请号：PCT/EP2011/068145
申请日：2011-10-18
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , STRÖM, Jacob , WENNERSTEN, Per
发明人： STRÖM, Jacob , WENNERSTEN, Per
IPC分类号： G06T9/00
CPC分类号： G06T9/004 , G06T9/00
摘要： The embodiments of the present invention relate to compression of parameters of an encoded texture block such that an efficient encoding is achieved. Index data is used as an example of parameters to be encoded. Accordingly, encoding the index data is achieved by predicting the index data, wherein the prediction is done in the pixel color domain, where changes often are smooth, instead of in the pixel index domain where the changes vary a lot. Hence, according to embodiments of the present invention the index data is predicted from previously predicted neighboring pixels taking into account that the base value and a modifier table value are known. When the index value is predicted the real index value can be decoded with the prediction as an aid. Since this way of predicting the index provides a very good prediction, it lowers the number of bits needed to represent the pixel index.
摘要翻译：本发明的实施例涉及编码纹理块的参数的压缩，使得实现有效的编码。索引数据用作要编码的参数的示例。因此，通过预测索引数据来实现索引数据的编码，其中在像素颜色域中完成预测，其中变化通常是平滑的，而不是在像素索引域中，其中变化很大。因此，根据本发明的实施例，考虑到基值和修改表值是已知的，从先前预测的相邻像素预测索引数据。当预测索引值时，可以用预测来解码实际索引值。由于这种预测索引的方式提供了非常好的预测，因此降低了表示像素索引所需的位数。

9. 发明申请

WO2012082028A1 TILE ENCODING AND DECODING 审中-公开
标题翻译：编码和解码
公开(公告)号：WO2012082028A1
公开(公告)日：2012-06-21
申请号：PCT/SE2010/051379
申请日：2010-12-14
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , STRÖM, Jacob , WENNERSTEN, Per
发明人： STRÖM, Jacob , WENNERSTEN, Per
IPC分类号： G06T9/00 , H03M7/40
CPC分类号： G06T9/005 , G06T9/00 , H04N19/176 , H04N19/42 , H04N19/436 , H04N19/69 , H04N19/91
摘要： A tile (1) of pixels (6) is encoded by variable length encoding at least a first block (4) of pixels (6) into a first sequence (10) of symbols and a second block (5) of pixels (6) into a second sequence (20) of symbols. The symbols of the first and second sequences (10, 20) are co-organized into a combined sequence (70) of symbols in which the symbols of the first sequence (10) are readable in a first reading direction and at least a portion of the symbols in the second sequence (20) are readable in a second, opposite reading direction. The encoding of the tile (1) to form one or more combined sequences (70) significantly reduces the bandwidth requirements when writing the tile (1) to a pixel value buffer (9). The co-organization of the first and second sequences (10, 20) enables parallel reading and decoding of the first and second sequences (10, 20) from the pixel value buffer (9), thereby reducing any decoding latency.
摘要翻译：像素（6）的瓦片（1）通过将像素（6）的至少第一块（4）可变长度编码为符号的第一序列（10）和像素（6）的第二块（5）来编码，转换成符号的第二个序列（20）。第一和第二序列（10,20）的符号被共同组织成符号的组合序列（70），其中第一序列（10）的符号在第一读取方向上是可读的，并且至少一部分第二序列（20）中的符号在第二相反的读取方向上是可读的。当将瓦片（1）写入像素值缓冲器（9）时，瓦片（1）的形成一个或多个组合序列（70）的编码显着地减少了带宽需求。第一和第二序列（10,20）的共同组织使得能够从像素值缓冲器（9）并行读取和解码第一和第二序列（10,20），从而减少任何解码等待时间。

10. 发明申请

WO2012030262A1 CO-COMPRESSION AND CO-DECOMPRESSION OF DATA VALUES 审中-公开
标题翻译：数据值的共同压缩和共同解除
公开(公告)号：WO2012030262A1
公开(公告)日：2012-03-08
申请号：PCT/SE2010/050939
申请日：2010-09-03
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , STRÖM, Jacob , WENNERSTEN, Per
发明人： STRÖM, Jacob , WENNERSTEN, Per
IPC分类号： G06T9/00 , H03M7/30
CPC分类号： H03M7/30 , G06T9/008 , G10L19/00 , H03M7/3082 , H04N19/126 , H04N19/51
摘要： A first and a second data value are co-compressed by generating a sequence of symbols having a most significant symbol that is the most significant symbol of a compressed representation of the first data value and a least significant symbol that is the most significant symbol of a compressed representation of the second data value. The compressed representation of the first data value corresponds to at least a portion of the symbols of the sequence of symbols starting from the most significant symbol and extending towards the least significant symbol in a first reading direction. The compressed representation of the second data value also corresponds to at least a portion of the symbols of the sequence of symbols, however, starting from the least significant symbol and extending in an opposite reading direction towards the most significant symbol.
摘要翻译：通过产生具有最高有效符号的符号序列来共同压缩第一和第二数据值，所述最重要符号是第一数据值的压缩表示的最高有效符号，以及作为第一数据值的最重要符号的最小有效符号第二数据值的压缩表示。第一数据值的压缩表示对应于从最高有效符号开始的符号序列的符号的至少一部分，并且朝向第一读取方向上的最小有效符号延伸。第二数据值的压缩表示也对应于符号序列的符号的至少一部分，然而，从最小有效符号开始并且朝着最重要符号的相反读取方向延伸。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式