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51. 发明授权

US08995764B2 Method and an arrangement for texture compression 有权
标题翻译：方法和纹理压缩的布置
公开(公告)号：US08995764B2
公开(公告)日：2015-03-31
申请号：US14009440
申请日：2011-08-24
申请人： Jacob Ström , Jim Rasmusson
发明人： Jacob Ström , Jim Rasmusson
IPC分类号： G06K9/36 , G06T9/00 , H04N19/176 , H04N19/593 , H04N19/126 , H04N19/154
CPC分类号： G06T9/00 , G06T9/004 , H04N19/126 , H04N19/154 , H04N19/176 , H04N19/593
摘要： The embodiments of the present invention reduce the compression time in order to achieve a faster texture compression. That is achieved by guessing, i.e. estimating the best table or tables (e.g. from tables 0 to 7) representing luminance information, and to only execute the compression for the table(s) estimated to provide the best luminance information.
摘要翻译：本发明的实施例减小了压缩时间，以便实现更快的纹理压缩。这是通过猜测，即估计表示亮度信息的最佳表或表（例如从表0到7）来实现的，并且仅对被估计提供最佳亮度信息的表执行压缩。

52. 发明授权

US08965067B2 Face data acquirer, end user video conference device, server, method, computer program and computer program product for extracting face data 有权
标题翻译：面部数据采集器，终端用户视频会议设备，服务器，方法，计算机程序和用于提取面部数据的计算机程序产品
公开(公告)号：US08965067B2
公开(公告)日：2015-02-24
申请号：US13824822
申请日：2010-10-28
申请人： Per Fröjdh , Jacob Ström
发明人： Per Fröjdh , Jacob Ström
IPC分类号： G06K9/00 , G06F17/30 , H04N7/14 , H04N7/15 , G06K9/62
CPC分类号： G06K9/00268 , G06F17/30793 , G06K9/00926 , G06K9/6255 , H04N7/147 , H04N7/15
摘要： A face data acquirer includes an image capture module arranged to capture an image from a video stream of a video conference. A face detection module is arranged to determine a subset of the image, the subset representing a face. An identity acquisition module is arranged to acquire an identity of a video conference participant coupled to the face represented by the subset of the image. A face extraction module is arranged to extract face data from the subset of the image and to determine whether to store the extracted face data for subsequent face recognition. A corresponding end user video conference device, server, method, computer program and computer program product are also provided.
摘要翻译：面部数据获取器包括被配置为从视频会议的视频流捕获图像的图像捕获模块。面部检测模块被布置成确定图像的子集，子集表示脸部。身份获取模块被布置成获取耦合到由图像的子集表示的面部的视频会议参与者的身份。面部提取模块被布置成从图像的子集中提取面部数据，并且确定是否存储所提取的面部数据以供随后的面部识别。还提供了相应的终端用户视频会议设备，服务器，方法，计算机程序和计算机程序产品。

53. 发明授权

US08577164B2 Image processing 有权
标题翻译：图像处理
公开(公告)号：US08577164B2
公开(公告)日：2013-11-05
申请号：US13132524
申请日：2009-05-29
申请人： Jacob Ström , Per Wennersten
发明人： Jacob Ström , Per Wennersten
IPC分类号： G06K9/36
CPC分类号： H04N19/423 , H04N19/115 , H04N19/119 , H04N19/136 , H04N19/176 , H04N19/192
摘要： An image (1) is decomposed into multiple superblocks (20, 22), each encompassing multiple pixel blocks (30A-30D, 32A-32D) having multiple pixels (40). The property values of a superblock (20) is fixed rate compressed to get a compressed block having a target bit length. The compressed block is stored in the memory locations (310, 320) assigned to the multiple pixel blocks (30A-30D) encompassed by the superblock (20) to thereby get multiple copies of the compressed block in the memory (300). The multiple copies collectively constitute a compressed representation of the superblock (20). When accessing a compressed block in a memory location (310) using random access during decoding, property values for neighboring pixel blocks (30B-30D) are obtained for free without the need for any further memory access.
摘要翻译：图像（1）被分解成多个超块（20,22），每个超块包含具有多个像素（40）的多个像素块（30A-30D，32A-32D）。超级块（20）的属性值被固定速率压缩以获得具有目标比特长度的压缩块。压缩块被存储在由超级块（20）包围的分配给多个像素块（30A-30D）的存储器位置（310,320）中，从而获得存储器（300）中的压缩块的多个副本。多个副本共同构成超级块（20）的压缩表示。当在解码期间使用随机访问在存储器位置（310）中访问压缩块时，获得相邻像素块（30B-30D）的属性值，而不需要任何进一步的存储器访问。

54. 发明授权

US08437563B2 Vector-based image processing 有权
标题翻译：基于矢量的图像处理
公开(公告)号：US08437563B2
公开(公告)日：2013-05-07
申请号：US12522743
申请日：2008-03-19
申请人： Tomas Akenine-Möller , Jacob Munkberg , Jacob Ström
发明人： Tomas Akenine-Möller , Jacob Munkberg , Jacob Ström
IPC分类号： G06K9/00 , G06K9/36 , G06K9/46
CPC分类号： G06T9/005 , G06T9/00 , G06T9/008 , H04N19/176
摘要： A block (300) of image elements (310) is compressed by determining multiple base vectors (510, 520, 530, 540) based on the feature vectors (312) associated with the image elements. Additional vectors (560, 570) are calculated based on defined pairs of neighboring base vectors (510, 520, 530, 540). A vector among the base vectors (510, 520, 530, 540) and the additional vectors (560, 570) is selected as representation of the feature vector (312) of an image element (310). An identifier (550) associated with selected vector is assigned to the image element (310) and included in the compressed block (500) which also comprises representations of the determined base vectors (510, 520, 530, 540).
摘要翻译：基于与图像元素相关联的特征向量（312），通过确定多个基本向量（510,520,530,540）来压缩图像元素（310）的块（300）。基于定义的邻近基本向量对（510,520,530,540）来计算附加向量（560,570）。选择基本向量（510,520,530,540）和附加向量（560,570）之间的向量作为图像元素（310）的特征向量（312）的表示。与所选择的向量相关联的标识符（550）被分配给图像元素（310），并被包括在压缩块（500）中，该压缩块（500）还包括所确定的基本向量（510,520,530,540）的表示。

55. 发明授权

US08369629B2 Image processing using resolution numbers to determine additional component values 有权
标题翻译：使用分辨率数字的图像处理来确定附加的组件值
公开(公告)号：US08369629B2
公开(公告)日：2013-02-05
申请号：US12161851
申请日：2007-01-22
申请人： Tomas Akenine-Möller , Jacob Munkberg , Petrik Clarberg , Jon Hasselgren , Jacob Ström
发明人： Tomas Akenine-Möller , Jacob Munkberg , Petrik Clarberg , Jon Hasselgren , Jacob Ström
IPC分类号： G06K9/36 , G06K9/00
CPC分类号： G06T9/00 , H04N19/103 , H04N19/176 , H04N19/90
摘要： First and second codewords are determined, based on first feature vector components of the image elements in an image block, as representations of a first and second component value. Third and fourth codewords are determined, based on second vector components, as representations of a third and fourth component value. First N1 and second N2 resolution numbers are selected based on the relation of a distribution of the first vector components and a distribution of the second vector components. N1 additional component values are generated based on the first and second component values and N2 additional component values are generated based on the third and fourth component values. Component indices indicative of the generated component values are then provided for the different image elements.
摘要翻译：基于图像块中的图像元素的第一特征向量分量来确定第一和第二码字作为第一和第二分量值的表示。基于第二矢量分量确定第三和第四码字作为第三和第四分量值的表示。基于第一矢量分量的分布和第二矢量分量的分布的关系来选择第一N1和第二N2分辨率数。基于第一和第二分量值生成N1个附加分量值，并且基于第三和第四分量值生成N 2个附加分量值。然后为不同的图像元素提供指示生成的分量值的分量指数。

56. 发明申请

US20110007967A1 Method and arrangement for retrieving information comprised in a barcode 有权
标题翻译：用于检索包含在条形码中的信息的方法和装置
公开(公告)号：US20110007967A1
公开(公告)日：2011-01-13
申请号：US12918378
申请日：2009-02-24
申请人： Joakim Söderberg , Jacob Ström , Jonas Alfthan
发明人： Joakim Söderberg , Jacob Ström , Jonas Alfthan
IPC分类号： G06K9/00 , G06K7/10
CPC分类号： G06K7/1465 , G06K7/14 , G06K7/1443 , G06K7/1456
摘要： A method of retrieving information comprised in a barcode is disclosed. The method comprises detecting that the barcode is present in a first image having a first image quality and capturing a first region, acquiring, when it is detected that the barcode is present, a second image having a second image quality and capturing a second region, wherein the second image quality is higher than the first image quality, and wherein the second region at least partly overlaps the first region, and decoding the barcode based on the second image to retrieve the information. A corresponding program product and a corresponding arrangement are also disclosed along with a communication device comprising the arrangement.
摘要翻译：公开了一种检索包含在条形码中的信息的方法。该方法包括检测条形码是否存在于具有第一图像质量的第一图像中并且捕获第一区域，当检测到条形码存在时获取具有第二图像质量并捕获第二区域的第二图像，其中所述第二图像质量高于所述第一图像质量，并且其中所述第二区域至少部分地与所述第一区域重叠，以及基于所述第二图像对所述条形码进行解码以检索所述信息。还公开了相应的节目产品和相应的配置以及包括该装置的通信设备。

57. 发明授权

US07693337B2 Multi-mode alpha image processing 有权
标题翻译：多模式Alpha图像处理
公开(公告)号：US07693337B2
公开(公告)日：2010-04-06
申请号：US10583454
申请日：2004-12-17
申请人： Jacob Ström , Tomas Akenine-Möller
发明人： Jacob Ström , Tomas Akenine-Möller
IPC分类号： G06K9/36 , H03M7/00 , G09G5/00 , G09G5/02
CPC分类号： G06T9/008 , G06T9/00 , H04N19/103 , H04N19/136 , H04N19/154 , H04N19/176 , H04N19/21 , H04N19/94
摘要： An alpha image encoding and decoding scheme operable according two different modes is disclosed. In the encoding, an alpha image is decomposed into alpha image blocks (600) comprising image elements (610). The blocks (600) are compressed into block representations (700) according to one of the two compression modes. A block representation (700) comprises a color codeword (720), an intensity codeword (730), an alpha codeword (740) and a sequence (750) of image element associated indices indicative of one of the codewords (730, 740). The compression and decompression mode to use for a block (600) is determined based on the alpha codeword (740). In a high alpha-resolution mode, the index sequence (750) comprises alpha indices selecting one of the quantized alpha values (740A, 740B) of the alpha codeword (740) and intensity indices selecting an intensity modifier from a modifier set represented by the intensity codeword (730). In a high luminance-resolution mode, the index sequence (750) only comprises intensity indices.
摘要翻译：公开了可根据两种不同模式操作的阿尔法图像编码和解码方案。在编码中，α图像被分解成包括图像元素的α图像块（600）（610）。根据两种压缩模式之一，块（600）被压缩成块表示（700）。块表示（700）包括指示码字（730,740）之一的图像元素相关索引的颜色码字（720），强度码字（730），阿尔法码字（740）和序列（750）。基于α码字（740）确定用于块（600）的压缩和解压缩模式。在高α分辨率模式中，索引序列（750）包括选择阿尔法码字（740）的量化的α值（740A，740B）中的一个的α索引，并且强度指数从由强度码字（730）。在高亮度分辨率模式中，索引序列（750）仅包括强度指数。

58. 发明授权

US07636471B2 Image processing 有权
标题翻译：图像处理
公开(公告)号：US07636471B2
公开(公告)日：2009-12-22
申请号：US10582988
申请日：2004-07-08
申请人： Jacob Ström , Tomas Akenine-Möller
发明人： Jacob Ström , Tomas Akenine-Möller
IPC分类号： G06K9/00
CPC分类号： H04N19/98 , H04N19/105 , H04N19/176 , H04N19/184 , H04N19/186
摘要： In an image-encoding scheme, an input image is decomposed into several image blocks (600) comprising multiple image elements (610), e.g. pixels or texels. The image blocks (600) are then encoded into encoded block representations (700). Such a block representation (700) comprises a color codeword (710), an intensity codeword (720) and a sequence (730) of intensity representations. The color codeword (710) is a representation of the colors of the image elements (610) of the block (600). The intensity codeword (720) is a representation of a set of multiple intensity modifiers for modifying the intensity of the image elements (610) in the block (600). The representation sequence (730) includes an intensity representation for each image element (610) in the block (600), where a representation identifies one of intensity modifiers in the intensity modifier set. During decoding, the color and intensity codewords (710, 720) and intensity representations (730) are used to generate a decoded representation of the image elements (610) in the block (600).
摘要翻译：在图像编码方案中，输入图像被分解为包括多个图像元素（610）的若干图像块（600）。像素或纹素。然后将图像块（600）编码为编码块表示（700）。这种块表示（700）包括颜色码字（710），强度码字（720）和强度表示的序列（730）。颜色码字（710）是块（600）的图像元素（610）的颜色的表示。强度码字（720）是用于修改块（600）中的图像元素（610）的强度的一组多重强度修改器的表示。表示序列（730）包括块（600）中的每个图像元素（610）的强度表示，其中表示标识强度修饰符集合中的一个强度修饰符。在解码期间，颜色和亮度码字（710,720）和强度表示（730）用于在块（600）中生成图像元素（610）的解码表示。

59. 发明授权

US07301537B2 Graphics processing apparatus, methods and computer program products using minimum-depth occlusion culling and zig-zag traversal 有权
标题翻译：图形处理装置，方法和使用最小深度遮挡剔除和锯齿形遍历的计算机程序产品
公开(公告)号：US07301537B2
公开(公告)日：2007-11-27
申请号：US10720042
申请日：2003-11-21
申请人： Jacob Ström , Tomas Akenine-Möller
发明人： Jacob Ström , Tomas Akenine-Möller
IPC分类号： G06T15/40
CPC分类号： G06T15/005 , G06T15/40
摘要： A plurality of rows of tiles is defined in a graphics display field comprising a plurality of rows of pixels, each tile including pixels from at least two rows of pixels. Occlusion flags for respective tiles of a row of tiles for a graphics primitive are set based on whether respective representative depth values for the tiles of the row of tiles meet an occlusion criterion. Pixels in rows of pixels corresponding to the row of tiles are processed for the graphics primitive in a row-by-row manner responsive to the occlusion flags. The processing may include processing rows of pixels in the row of tiles using a zig-zag traversal algorithm.
摘要翻译：在包括多行像素的图形显示区域中定义多行瓦片，每个瓦片包括来自至少两行像素的像素。基于瓦片行的瓦片的相应代表性深度值是否满足遮挡标准来设置用于图形基元的一行瓦片的相应瓦片的遮挡标志。对应于该行的行的像素行中的像素对应于遮挡标志的逐行方式被处理用于图形基元。处理可以包括使用锯齿形遍历算法来处理瓦片行中的像素行。

60. 发明授权

US06940511B2 Graphics texture processing methods, apparatus and computer program products using texture compression, block overlapping and/or texture filtering 有权
公开(公告)号：US06940511B2
公开(公告)日：2005-09-06
申请号：US10326849
申请日：2002-12-20
申请人： Tomas Akenine-Möller , Jacob Ström
发明人： Tomas Akenine-Möller , Jacob Ström
IPC分类号： G06T1/60 , G06T9/00 , G06T15/04 , H04N1/46 , H04N1/60 , G06F15/16
CPC分类号： G06T1/60 , G06T9/005 , G06T15/04
摘要： A pixel is textured by storing a first texel reference value, a second texel reference value, and texel mapping values where each texel mapping value represents a k-tuple of (ternary) references to the first texel reference value, the second texel reference value and a third texel reference value to thereby represent a block of texels. A pixel value for the pixel is generated from the stored texel values and the pixel is displayed responsive to the generated pixel value. In some embodiments, respective pluralities of texel reference values and texel mapping values that map thereto are stored for respective ones of a plurality of overlapping blocks of texels. In further embodiments, a first mipmap value for a pixel is bilinearly interpolated from the retrieved texel values for the set of nearest neighbor texels. A second mipmap value for the pixel is generated by averaging the retrieved texel values for the set of nearest neighbor texels. A pixel value for the pixel is generated by interpolating between the first and second mipmap values. The present invention may be embodied as methods, apparatus and computer program products.

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