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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

WO2013048311A1 DECODERS AND METHODS THEREOF FOR MANAGING PICTURES IN VIDEO DECODING PROCESS 审中-公开
标题翻译：用于管理视频解码过程中的图像的解码器及其方法
公开(公告)号：WO2013048311A1
公开(公告)日：2013-04-04
申请号：PCT/SE2012/050992
申请日：2012-09-20
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , SAMUELSSON, Jonatan , SJÖBERG, Rickard , WENNERSTEN, Per
发明人： SAMUELSSON, Jonatan , SJÖBERG, Rickard , WENNERSTEN, Per
IPC分类号： H04N7/26
CPC分类号： H04N19/00533 , H04N19/31 , H04N19/44 , H04N19/46 , H04N19/50
摘要： An object with the embodiments of the present invention is to make it well defined from which previously decoded picture to retrieve the values for calculating POC of the current picture regardless of how many temporal layers have been decoded. That is achieved by determining the POC of the current picture, to be used by the decoder, as a sum of a syntax element pic_order_cnt_lsb and a most significant bits of the POC, PicOrderCntMsb, of the current picture, wherein the PicOrderCntMsb of the current picture is derived using at least a prevPicOrderCntMsb and a prevPicOrderCntLsb and the prevPicOrderCntMsb is set equal to the most significant bits of the POC of a previous reference picture in decoding order that has a layer identity equal to zero and prevPicOrderCntLsb is set equal to the value of the least significant bits of the POC of a previous reference picture in decoding order that has a layer identity equal to zero.
摘要翻译：具有本发明的实施例的目的是使其从先前解码的图像中很好地定义，以检索用于计算当前图像的POC的值，而不管已经解码了多少时间层。这是通过将解码器使用的当前画面的POC确定为当前画面的语法元素pic_order_cnt_lsb和POC，PicOrderCntMsb的最高有效位的总和来实现的，其中当前画面的PicOrderCntMsb 使用至少一个prevPicOrderCntMsb和prevPicOrderCntLsb导出，并且将prevPicOrderCntMsb设置为等于先前参考图片的POC的最高有效位，其解码顺序具有等于零的层标识，并且将prevPicOrderCntLsb设置为等于解码顺序中先前参考图片的POC的最低有效位具有等于零的层标识。

3. 发明申请

WO2013048316A1 DECODER AND ENCODER FOR PICTURE OUTPUTTING AND METHODS THEREOF 审中-公开
标题翻译：图像输出的解码器和编码器及其方法
公开(公告)号：WO2013048316A1
公开(公告)日：2013-04-04
申请号：PCT/SE2012/051018
申请日：2012-09-26
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , SAMUELSSON, Jonatan , SJÖBERG, Rickard , WENNERSTEN, Per
发明人： SAMUELSSON, Jonatan , SJÖBERG, Rickard , WENNERSTEN, Per
IPC分类号： H04N7/26 , H04N7/68
CPC分类号： H04N19/00696 , H04N19/31 , H04N19/423 , H04N19/44 , H04N19/46 , H04N19/52 , H04N19/895
摘要： An object of the embodiments of the present invention is to achieve a robust solution for keeping track of the output order. That is achieved by introducing a set of Allowed POC Values (APV) which is signaled from the encoder to the decoder. In this way the number of allowed POC values will be limited, and in this way there is no risk that the output order is undefined if occasional pictures are lost.
摘要翻译：本发明的实施例的目的是实现用于跟踪输出顺序的可靠的解决方案。这是通过引入一组从编码器向解码器发信号的允许POC值（APV）来实现的。以这种方式，允许的POC值的数量将被限制，并且以这种方式，如果偶然的图像丢失，则不存在未定义输出顺序的风险。

4. 发明申请

WO2012169952A3 SIGNALING OF END OF SLICES 审中-公开
公开(公告)号：WO2012169952A3
公开(公告)日：2012-12-13
申请号：PCT/SE2012/050308
申请日：2012-03-21
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , SJÖBERG, Rickard , WENNERSTEN, Per
发明人： SJÖBERG, Rickard , WENNERSTEN, Per
IPC分类号： H04N7/26
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.

5. 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

6. 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）。

7. 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。

8. 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。

9. 发明申请

WO2012105882A1 PIXEL BLOCK COMPRESSION AND DECOMPRESSION 审中-公开
标题翻译：像素块压缩和解压缩
公开(公告)号：WO2012105882A1
公开(公告)日：2012-08-09
申请号：PCT/SE2011/050123
申请日：2011-02-04
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 , H04N7/34 , H03M7/30 , G06T1/20 , G06T15/00
CPC分类号： H04N1/41 , H04N19/428 , H04N19/50
摘要： Compression of a pixel block (1) having multiple pixels (10, 12, 14) comprises calculating a respective prediction error for each pixel component of the pixels (12, 14) except a defined starting pixel (10). Respective minimum number of symbols required for representing the prediction errors are determined and used to select a symbol configuration among multiple different symbol configurations. Each such symbol configuration defines respective numbers of symbols maximally available for the different prediction errors. A compressed representation (20) of the pixel block (1) comprises a configuration identifier (21) of the selected symbol configuration, a representation of the pixel value of the defined starting pixel (10) and representations (25-27) of the prediction errors calculated for the remaining pixels (12, 14).
摘要翻译：具有多个像素（10,12,14）的像素块（1）的压缩包括计算除了限定的起始像素（10）之外的像素（12,14）的每个像素分量的相应预测误差。确定表示预测误差所需的符号的最小数量，并用于在多个不同符号配置中选择符号配置。每个这样的符号配置定义对于不同的预测误差最大可用的符号的相应数目。像素块（1）的压缩表示（20）包括所选择的符号配置的配置标识符（21），所定义的起始像素（10）的像素值的表示和预测的表示（25-27）为剩余像素（12,14）计算出的误差。

10. 发明申请

WO2011126424A1 TEXTURE COMPRESSION AND DECOMPRESSION 审中-公开
标题翻译：纹理压缩和分解
公开(公告)号：WO2011126424A1
公开(公告)日：2011-10-13
申请号：PCT/SE2011/050145
申请日：2011-02-09
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , RASMUSSON, Jim , DOGGETT, Michael , STRÖM, Jacob , WENNERSTEN, Per
发明人： RASMUSSON, Jim , DOGGETT, Michael , STRÖM, Jacob , WENNERSTEN, Per
IPC分类号： G06T9/00 , H04N7/26
CPC分类号： G06T9/00
摘要： Embodiments relate to compression and decompression of textures. A texel block (10) is compressed by specifying two major directions in the texel block (10) and defining the profiles of how the texel values change along the respective directions. The resulting compressed texel block (30) comprises two value codewords (31, 32), two line codewords (35-38) and a function codeword (33, 34). The two value codewords (31, 32) are employed to calculate two texel values for the texel block (10). The line codewords (35-38) are employed to determine equations of two lines (20, 22) coinciding with the two major directions in the texel block (10). Signed distances are calculated for each texel (12) from the texel position in the texel block (10) and to the two lines (20, 22). The signed distances are input to a function defined by the function codeword (33, 34) to output two values from which weights are calculated and applied to the two texel values in order to get a representation of the texel value of a texel (12).
摘要翻译：实施例涉及纹理的压缩和解压缩。通过在纹素块（10）中指定两个主要方向来压缩纹理块（10），并且定义纹理值沿着各个方向如何变化的轮廓。所得到的压缩纹理块（30）包括两个值码字（31,32），两行码字（35-38）和一个功能码字（33,34）。两个值码字（31,32）用于计算纹素块（10）的两个纹素值。行码字（35-38）用于确定与纹理块（10）中的两个主要方向一致的两条线（20,22）的等式。从纹理块（10）中的纹素位置和两条线（20,22）中的每个纹理像素（12）计算签名距离。有符号距离被输入到由功能代码字（33,34）定义的函数，以输出计算权重的两个值并将其应用于两个纹素值，以便获得纹素的纹理值的表示（12）。

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