公开(公告)号：WO2004012136A3

公开(公告)日：2004-03-18

申请号：PCT/US0323860

申请日：2003-07-29

Applicant: QUALCOMM INC

Inventor： GOVINDASWAMY SENTHIL ,  FUDGE BRIAN T ,  IRVINE ANN C ,  THYAGARAJAN KADAYAM S

IPC: H04N7/30 ,  G06K9/36 ,  G06T9/00 ,  H03M7/30 ,  H04N1/41 ,  H04N1/413 ,  H04N7/26 ,  H04N7/50 ,  H04B1/66 ,  H04N7/12

CPC classification number: H04N7/17318 ,  H04N19/115 ,  H04N19/122 ,  H04N19/124 ,  H04N19/149 ,  H04N19/15 ,  H04N19/176 ,  H04N19/192 ,  H04N19/194 ,  H04N19/196 ,  H04N19/197 ,  H04N19/46 ,  H04N19/60 ,  H04N19/61 ,  H04N21/4312 ,  H04N21/4314 ,  H04N21/440254 ,  H04N21/4405 ,  H04N21/4621 ,  H04N21/4623 ,  H04N21/84

Abstract: An apparatus and method for limiting bit rate of compressed data is disclosed. The apparatus and method allows the generation of parameters for encoding digital image data based on the data bit rate resulting from the use of different parameters. In one embodiment, a statistical analysis is performed to determine the different parameters. The use of parameters results in a bit rate that would prevent a decoder to stall during decompression while allowing the encoder compress without affecting the quality. Therefore, a more efficient encoding and decoding can be achieved.

Abstract translation: 公开了一种限制压缩数据比特率的装置和方法。 该装置和方法允许根据使用不同参数产生的数据比特率，产生用于编码数字图像数据的参数。 在一个实施例中，执行统计分析以确定不同的参数。 参数的使用导致比特率，这将阻止解码器在解压缩期间停止，同时允许编码器压缩而不影响质量。 因此，可以实现更有效的编码和解码。

公开(公告)号：EP1493276A4

公开(公告)日：2013-02-27

申请号：EP03718319

申请日：2003-04-09

Applicant: QUALCOMM INC

Inventor： GOVINDASWAMY SENTHIL ,  IRVINE ANN C ,  RATZEL JOHN

IPC: H04N7/12 ,  G06T9/00 ,  H04N7/66

CPC classification number: H04N19/89 ,  H04N19/625

Abstract: An apparatus and method for the detection of errors in compressed digital image is disclosed. In one embodiment, a signature is generated using a multiple input shift register and added to the compressed information. The signature is verified at the decoder to detect an error in the compressed information. Other information such as the frame number and/or color component type of the compressed image can also be verified to detect errors in the compressed information. In other embodiments, the decoder detects errors if there are bits remaining after decompression and/or if there are invalid codes at decompression. Once an error is detected, the compressed information can be discarded or re-sent and processed. Therefore, the detection of errors can significantly enhance at least the reliance of systems such as digital cinema that require compression of large amounts of data.

公开(公告)号：EP1546994A4

公开(公告)日：2009-08-12

申请号：EP03772118

申请日：2003-07-29

Applicant: QUALCOMM INC

Inventor： GOVINDASWAMY SENTHIL ,  FUDGE BRIAN T ,  IRVINE ANN C ,  THYAGARAJAN KADAYAM S

IPC: H04N7/30 ,  G06K9/36 ,  G06T9/00 ,  H03M7/30 ,  H04N1/41 ,  H04N1/413 ,  H04N7/26 ,  H04N7/50 ,  H04B1/66 ,  H04N7/12

CPC classification number: H04N7/17318 ,  H04N19/115 ,  H04N19/122 ,  H04N19/124 ,  H04N19/149 ,  H04N19/15 ,  H04N19/176 ,  H04N19/192 ,  H04N19/194 ,  H04N19/196 ,  H04N19/197 ,  H04N19/46 ,  H04N19/60 ,  H04N19/61 ,  H04N21/4312 ,  H04N21/4314 ,  H04N21/440254 ,  H04N21/4405 ,  H04N21/4621 ,  H04N21/4623 ,  H04N21/84

Abstract: An apparatus and method for limiting bit rate of compressed data is disclosed. The apparatus and method allows the generation of parameters for encoding digital image data based on the data bit rate resulting from the use of different parameters. In one embodiment, a statistical analysis is performed to determine the different parameters. The use of parameters results in a bit rate that would prevent a decoder to stall during decompression while allowing the encoder compress without affecting the quality. Therefore, a more efficient encoding and decoding can be achieved.

公开(公告)号：EP1573469A4

公开(公告)日：2007-09-19

申请号：EP03783645

申请日：2003-11-17

Applicant: QUALCOMM INC

Inventor： IRVINE ANN C ,  RAVEENDRAN VIJAYALAKSHMI R

IPC: G06T9/00 ,  H04N7/12 ,  H04N7/26 ,  H04N7/30 ,  G06F1/00

CPC classification number: G06T9/005 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/15 ,  H04N19/176 ,  H04N19/18 ,  H04N19/187 ,  H04N19/39 ,  H04N19/40 ,  H04N19/60 ,  H04N19/63

Abstract: Apparatus and method for generating multiple descriptions of compressed data is disclosed. In the apparatus and method, transform coefficients are generated from input data and quantized. An energy distribution of the quantized transform coefficients is generated. Based on the energy distribution, the transform coefficients are grouped into layers. By entropy coding different number of layers, multiple descriptions of compressed data are generated.

Abstract translation: 公开了用于生成压缩数据的多个描述的设备和方法。 在该设备和方法中，从输入数据生成变换系数并进行量化。 生成量化变换系数的能量分布。 基于能量分布，变换系数被分组成层。 通过对不同数量的层进行熵编码，生成压缩数据的多个描述。

公开(公告)号：WO2004047425A3

公开(公告)日：2004-11-18

申请号：PCT/US0336827

申请日：2003-11-17

Applicant: QUALCOMM INC

Inventor： IRVINE ANN C ,  RAVEENDRAN VIJAYALAKSHMI R

IPC: G06T9/00 ,  H04N7/12 ,  H04N7/26 ,  H04N7/30 ,  H03M1/10

CPC classification number: G06T9/005 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/15 ,  H04N19/176 ,  H04N19/18 ,  H04N19/187 ,  H04N19/39 ,  H04N19/40 ,  H04N19/60 ,  H04N19/63

Abstract: An apparatus and method for generating multiple descriptions of compressed data are comprised. Generally, a quantized bit stream is generated using a reference quantization step. The quantized bit stream is then re-quantized using a first quantization step to generate a first description of compressed data, wherein the first quantization step is determined based on a first required scaling of the reference quantization step. The quantized bit stream may also be re-quantized using a second quantization step to generate a second description of compressed data, wherein the second quantization step is determined based on a second required scaling of the reference quantization step.

Abstract translation: 包括用于产生压缩数据的多个描述的装置和方法。 通常，使用参考量化步长产生量化比特流。 然后使用第一量化步骤对量化比特流进行重新量化，以产生压缩数据的第一描述，其中基于参考量化步骤的第一所需缩放来确定第一量化步长。 也可以使用第二量化步骤对量化比特流进行重新量化，以生成压缩数据的第二描述，其中基于参考量化步骤的第二所需缩放来确定第二量化步长。

公开(公告)号：WO03009153A3

公开(公告)日：2003-04-10

申请号：PCT/US0222863

申请日：2002-07-19

Applicant: QUALCOMM INC

Inventor： THYAGARAJAN KADAYAM ,  IRVINE ANN C

IPC: H04N7/30 ,  H03M7/30 ,  H04N1/41 ,  H04N7/26 ,  H04N7/50 ,  G06F15/00

CPC classification number: H04N19/174 ,  H04N19/119 ,  H04N19/124 ,  H04N19/13 ,  H04N19/14 ,  H04N19/18 ,  H04N19/30 ,  H04N19/593 ,  H04N19/60 ,  H04N19/61 ,  H04N19/91 ,  H04N19/96

Abstract: A method of losslessly decoding signals representing an image is claimed. A lossy compressed data file and a residual compressed data file are received. The lossy compressed data filed is separated into DC coefficients and AC coefficients, and decoded, separately, to the determine DC values and the AC values (130). The DC values and the AC values are inverse quantized to produce lossy, decompressed data (146). The lossy decompressed frequency data is combined with the residual decompressed data to produce a lossless data file, wherein the lossless data file is substantially the same as the original image.

Abstract translation: 声称对代表图像的信号进行无损译码的方法。 收到有损压缩数据文件和残留压缩数据文件。 将有损压缩数据字段分成DC系数和AC系数，并分别解码为确定DC值和AC值（130）。 DC值和AC值被反量化以产生有损耗的解压缩数据（146）。 有损解压缩频率数据与剩余解压缩数据组合以产生无损数据文件，其中无损数据文件与原始图像基本相同。

公开(公告)号：EP1425913A4

公开(公告)日：2010-04-28

申请号：EP02746834

申请日：2002-07-03

Applicant: QUALCOMM INC

Inventor： BEN-ZUR LIAT ,  MUSFELDT CURTIS D ,  WINGERT CHRISTOPHER ,  POMES PAUL ,  HOSE JESSE ,  IRVINE ANN C ,  GOVINDASWAMY SENTHIL

IPC: H04L9/08 ,  H04L9/10 ,  H04N7/16 ,  H04N7/167 ,  H04N21/414

CPC classification number: H04N7/162 ,  H04N7/1675 ,  H04N21/41415

公开(公告)号：EP1606764A4

公开(公告)日：2010-03-10

申请号：EP04757611

申请日：2004-03-17

Applicant: QUALCOMM INC

Inventor： RAVEENDRAN VIJAYALAKSHMI R ,  IRVINE ANN C

IPC: G06K9/40 ,  G06T5/00 ,  H04N7/26

CPC classification number: G06T5/002 ,  G06T5/20 ,  G06T2207/20021 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/80 ,  H04N19/86 ,  H04N19/96

Abstract: Embodiments describe a method, apparatus and system for processing images using block based compression. In one embodiment, a method comprises determining whether two blocks are neighboring blocks, determining whether the two neighboring blocks are both subdivided, if the two blocks are neighboring blocks; performing deblocking filtering on one or more edge pixels of the two neighboring blocks, if it is determined that both of the two neighboring blocks are not subdivided.

Abstract translation: 实施例中描述了使用基于块的压缩处理图像的方法，装置和系统。 在一个中，一种方法的实施方案包括确定是否采两个块是相邻块，确定性采矿无论两个相邻块均为细分，如果两个块是相邻块; 在两个相邻块的一个或多个边缘像素执行去块滤波中，如果确定没有开采两者两个相邻块的不细分。

公开(公告)号：EP1456762A4

公开(公告)日：2009-01-28

申请号：EP02750150

申请日：2002-07-19

Applicant: QUALCOMM INC

Inventor： THYAGARAJAN KADAYAM ,  IRVINE ANN C

IPC: G06F15/00 ,  H04N7/30 ,  H03M7/30 ,  H04N1/41 ,  H04N7/26 ,  H04N7/50

CPC classification number: H04N19/174 ,  H04N19/119 ,  H04N19/124 ,  H04N19/13 ,  H04N19/14 ,  H04N19/18 ,  H04N19/30 ,  H04N19/593 ,  H04N19/60 ,  H04N19/61 ,  H04N19/91 ,  H04N19/96

Abstract: A method of losslessly decoding signals representing an image is claimed. A lossy compressed data file and a residual compressed data file are received. The lossy compressed data filed is separated into DC coefficients and AC coefficients, and decoded, separately, to the determine DC values and the AC values (130). The DC values and the AC values are inverse quantized to produce lossy, decompressed data (146). The lossy decompressed frequency data is combined with the residual decompressed data to produce a lossless data file, wherein the lossless data file is substantially the same as the original image.

公开(公告)号：EP1579577A4

公开(公告)日：2006-01-18

申请号：EP03783644

申请日：2003-11-17

Applicant: QUALCOMM INC

Inventor： IRVINE ANN C ,  RAVEENDRAN VIJAYALAKSHMI R

IPC: G06T9/00 ,  H04N7/12 ,  H04N7/26 ,  H04N7/30 ,  H03M1/10

CPC classification number: G06T9/005 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/15 ,  H04N19/176 ,  H04N19/18 ,  H04N19/187 ,  H04N19/39 ,  H04N19/40 ,  H04N19/60 ,  H04N19/63

Abstract: An apparatus and method for generating multiple descriptions of compressed data are comprised. Generally, a quantized bit stream is generated using a reference quantization step. The quantized bit stream is then re-quantized using a first quantization step to generate a first description of compressed data, wherein the first quantization step is determined based on a first required scaling of the reference quantization step. The quantized bit stream may also be re-quantized using a second quantization step to generate a second description of compressed data, wherein the second quantization step is determined based on a second required scaling of the reference quantization step.

Abstract translation: 包括用于生成压缩数据的多个描述的装置和方法。 通常，使用参考量化步骤来生成量化比特流。 然后使用第一量化步骤对量化比特流进行重新量化以生成压缩数据的第一描述，其中基于参考量化步骤的第一所需缩放来确定第一量化步长。 量化比特流也可以使用第二量化步骤来重新量化以产生压缩数据的第二描述，其中第二量化步骤是基于参考量化步骤的第二所需缩放确定的。