公开(公告)号：EP1155360A4

公开(公告)日：2005-03-16

申请号：EP00914541

申请日：2000-02-04

申请人： QUVIS INC

发明人： GOERTZEN KENBE D

IPC分类号： G06T9/00 ,  H03M7/40 ,  H04N7/26

CPC分类号： H04N19/1883 ,  H04N19/10 ,  H04N19/122 ,  H04N19/124 ,  H04N19/149 ,  H04N19/152 ,  H04N19/174 ,  H04N19/192 ,  H04N19/63

摘要： An image processing scheme that minimizes (175) the amount of data required to process an input image signal (120) but which maintains a guaranteed desired image quality level is disclosed. Transformation (185) and quantification (190) removes redundant data from the input image signal and provides a symbol set that is represented by a determined total data content. A peak data rate is determined from the total data content and any encoding overhead. The quality of image processing is determined based upon the transformation and quantification settings. Quality priority processing ensures that the available data rate is at least equal to the peak data rate. Transformation and quantification can be adjusted where a determination is made that the peak data rate exceeds the available data processing rate, or where the determined quality level does not exceed the selected quality level.

公开(公告)号：EP1472883A1

公开(公告)日：2004-11-03

申请号：EP03731788.0

申请日：2003-01-20

申请人： Koninklijke Philips Electronics N.V.

发明人： BOURGE, Arnaud ,  BARRAU, Eric

IPC分类号： H04N7/26

CPC分类号： H04N19/615 ,  H04N19/13 ,  H04N19/1883 ,  H04N19/31 ,  H04N19/61 ,  H04N19/63

摘要： The invention relates to a video encoding method for the compression of a video sequence, comprising the steps of generating from the original video sequence, by means of a wavelet decomposition, a low resolution sequence, performing on said low resolution sequence a low resolution decomposition, by means of a motion compensated spatio-temporal analysis, generating from said low resolution decomposition a full resolution sequence, by means of an anchoring of the high frequency spatial subbands resulting from the wavelet decomposition to said low resolution decomposition and coding said full resolution sequence and the motion vectors generated during the motion compensated spatio-temporal analysis. The invention also relates to a corresponding decoding method, and to corresponding encoding and decoding devices.

公开(公告)号：EP1470723A2

公开(公告)日：2004-10-27

申请号：EP03705915.1

申请日：2003-01-27

申请人： Quvis, Inc.

发明人： GOERTZEN, Kenbe, D.

IPC分类号： H04N7/26

CPC分类号： H04N19/42 ,  H04N19/112 ,  H04N19/124 ,  H04N19/13 ,  H04N19/154 ,  H04N19/162 ,  H04N19/1883 ,  H04N19/46 ,  H04N19/61 ,  H04N19/62 ,  H04N19/63 ,  H04N19/70

摘要： A system, method, and electronic chip for compressing a digital data signal while maintaining a quality level is disclosed. A signal is received that is representative of a quality level. The signal may be received into a computer system or into an electronic chip, such as an application specific integrated circuit or an electronic chip operating with a computer system. A digital data signal, which may be a digital image stream is decorrelated based in part on the received quality level. The decorrelated digital data signal is quantified according to frequency so as to provide equal resolution across all frequencies. The quantified digital data signal is then entropy encoded. The digital data signal is thereby compressed. Upon decompression, the uncompressed data maintains the desired quality level over all values. If the values are color components within a digital image stream, the color components will have the desired S/N ratio.

公开(公告)号：EP1449116A1

公开(公告)日：2004-08-25

申请号：EP02781731.1

申请日：2002-10-29

申请人： Parthusceva Ltd.

发明人： SADEH, Yaron, M.

IPC分类号： G06F17/14 ,  G06T9/00 ,  H04N7/30 ,  H04N7/26 ,  H04N7/50

CPC分类号： H04N19/635 ,  H04N19/122 ,  H04N19/1883 ,  H04N19/42 ,  H04N19/593 ,  H04N19/60 ,  H04N19/61 ,  H04N19/63

摘要： In some embodiments of the present invention, frequently occurring inverse linear transform results are calculated and stored in look-up-tables. In real time, incoming blocks of linear transform coefficients are divided into two or more groups. A numerical code is determined for each group and checked against a look-up-table for that group to see whether it corresponds to a pre-calculated inverse linear transform result.

公开(公告)号：EP1341123A1

公开(公告)日：2003-09-03

申请号：EP01998180.2

申请日：2001-11-28

申请人： Canon Kabushiki Kaisha

发明人： SHINBATA, Hiroyuki

IPC分类号： G06T5/10 ,  G06T5/00 ,  G06T1/00 ,  H04N1/407 ,  H04N1/409 ,  H04N5/20

CPC分类号： H04N1/4092 ,  G06T5/009 ,  G06T5/10 ,  G06T2207/10116 ,  G06T2207/20016 ,  G06T2207/20064 ,  H04N1/407 ,  H04N1/4072 ,  H04N19/1883 ,  H04N19/63

摘要： There are disclosed an image processing apparatus and method, and the like, which can obtain a high-quality image, the dynamic range or partial pixel value range of which has been changed while suppressing or avoiding collapse of the edge structure of an image or generation of overshoot. Also, there are disclosed an image processing apparatus and method, and the like, which can obtain a high-quality image, desired spatial frequency components of which have been emphasized or suppressed while suppressing or avoiding collapse of the edge structure of an edge portion contained in an objective image.
For example, an image processing apparatus includes tone conversion means for executing tone conversion of an image, frequency transformation means for decomposing the image that has undergone tone conversion by the tone conversion means into frequency components of a plurality of frequency bands, and component conversion means for converting the frequency components of the plurality of frequency bands obtained by the frequency transformation means, on the basis of values of the frequency components and the tone conversion characteristics of the tone conversion means.

摘要翻译： 公开了一种图像处理装置和方法等，其可以获得高质量图像，其动态范围或部分像素值范围已经改变，同时抑制或避免图像或代的边缘结构的崩溃 超调。 此外，公开了一种图像处理设备和方法等，其可以获得高质量图像，其期望的空间频率分量已被强调或抑制，同时抑制或避免包含的边缘部分的边缘结构的坍塌 在客观的图像。 例如，图像处理设备包括用于执行图像的色调转换的色调转换装置，用于将已经由色调转换装置进行色调转换的图像分解成多个频带的频率分量的频率转换装置，以及分量转换装置 用于根据色调转换装置的频率分量和色调转换特性的值，转换由频率转换装置获得的多个频带的频率分量。

公开(公告)号：EP1294175A1

公开(公告)日：2003-03-19

申请号：EP02396130.3

申请日：2002-08-29

申请人： Nokia Corporation

发明人： Chebil, Fehmi

IPC分类号： H04N1/41

CPC分类号： H04N19/1883 ,  H04N19/103 ,  H04N19/12 ,  H04N19/15 ,  H04N19/154 ,  H04N19/156 ,  H04N19/184 ,  H04N19/63

摘要： A method and system for encoding an image for providing encoded data for transmission or storage. After the image is decomposed by a transform into sub-bands containing blocks or samples of transformed image data organized in a number of bit-planes, it is adjusted to reduce the number of bit-planes prior to being encoded by a bit-plane coder into encoded data. The reduction of the bit-planes is based on the compression factor of the encoding process, the transmission target bit-rate, the type of sub-band and the resolution level of the transformed image data.

摘要翻译： 一种用于编码用于提供用于传输或存储的编码数据的图像的方法和系统。 在通过变换将图像分解成包含组织在多个位平面中的变换图像数据的块或样本的子带之后，调整它以在由位平面编码器编码之前减少位平面的数量 转换为编码数据。 位平面的减少是基于编码处理的压缩因子，传输目标比特率，子带的类型和变换的图像数据的分辨率级别。

公开(公告)号：EP1050014A4

公开(公告)日：2002-07-31

申请号：EP99903232

申请日：1999-01-20

申请人： AT & T CORP

发明人： BOTTOU LEON ,  PIGEON STEVEN P

IPC分类号： G06T9/00 ,  G06K9/36 ,  G01S13/00 ,  G06K9/40 ,  G06K9/46

CPC分类号： G06T9/007 ,  H04N19/132 ,  H04N19/14 ,  H04N19/18 ,  H04N19/1883 ,  H04N19/63

摘要： Wavelet coding of partially-masked image information may be made faster by either of two embodiments of the present invention. In a first embodiment, quick convergence is obtained by performing wavelet encoding in stages, each stage associated with a predetermined wavelet scale. Each stage comprises a low-pass linear filter (110) and a high-pass linear filter (120). By advancing the stages from finest scale to coarsest scale, coefficients of masked wavelets are identified early in the coding process. In a second embodiment, quick convergence is obtained by introducing overshoot techniques when masked coefficients are identified, modified and image data is reconstructed therefrom.

公开(公告)号：EP1185104A1

公开(公告)日：2002-03-06

申请号：EP01119431.3

申请日：2001-08-22

申请人： MOTOROLA, INC.

发明人： Hobson, Paola Marcella ,  McKoen, Kevin Michael ,  Kadir, Timor

IPC分类号： H04N7/24 ,  H04N7/26 ,  H04L12/56 ,  H04Q7/18

CPC分类号： H04N7/142 ,  H04N19/103 ,  H04N19/132 ,  H04N19/156 ,  H04N19/1883 ,  H04N19/63 ,  H04N21/234327 ,  H04N21/6373 ,  H04N21/6377 ,  H04N21/658 ,  H04N2007/145 ,  H04W52/027 ,  H04W52/029 ,  Y02D70/1224

摘要： An image acquisition, transmission, and display system including a mobile terminal operative to acquire and transmit images a receiving terminal operative to receive and display the images and detection apparatus operative to detect whether or not a viewer is viewing the images, where the detection apparatus is operative, upon detecting that no viewer is viewing the images, to cause a first signal to be sent to the mobile terminal causing the mobile terminal to reduce its image acquisition rate, and where the detection apparatus is operative, upon detecting that a viewer is viewing the images, to cause a second signal to be sent to the mobile terminal causing the mobile terminal to increase its image acquisition rate.

摘要翻译： 一种图像获取，传输和显示系统，包括可操作以获取和发送图像的移动终端，接收终端可操作以接收和显示图像，检测装置可操作以检测观看者是否正在观看图像，其中检测装置是 当检测到没有观看者正在观看图像时，使得第一信号被发送到移动终端，导致移动终端降低其图像获取速率，并且在检测装置可操作时，在检测到观看者正在观看时 图像，以使第二信号被发送到移动终端，导致移动终端增加其图像获取速率。

公开(公告)号：EP0864135A4

公开(公告)日：2001-06-13

申请号：EP96937039

申请日：1996-10-28

申请人： UNIV CALIFORNIA

发明人： BRADLEY JONATHAN N

IPC分类号： H04N5/93 ,  G06T9/00 ,  H04N1/41 ,  H04N7/26 ,  H04N7/30

CPC分类号： H04N19/645 ,  H04N19/115 ,  H04N19/13 ,  H04N19/146 ,  H04N19/167 ,  H04N19/1883 ,  H04N19/42 ,  H04N19/593 ,  H04N19/63 ,  H04N19/635 ,  H04N19/91

摘要： Image compression and viewing are implemented. A DWT-based compression method uses a two-level memory computer. The viewing method selects image areas in compressed form at multiple resolutions. For compression, a plurality of discrete tile image subsets (118) is defined which form the complete image. Seamless wavelet-based image compression occurs by inputting the tiles in a selected sequence to a DWT (120) routine. The resulting DWT coefficients are stored in a first primary memory and periodically are compressed (128) and stored in a secondary memory (124). The sequence of DWT operations on the tiles effectively calculates a seamless DWT of the image. Data retrieval occurs by specifying a resolution and a region of the image for display (146). The subset of stored DWT coefficients corresponding to each requested scene is determined and then decompressed for input to an inverse DWT (164) to form the display (166). Interaction (168) may occur with a pointing device on previous retrieved displays.

公开(公告)号：EP0848557A3

公开(公告)日：1998-07-22

申请号：EP97309207.5

申请日：1997-11-14

申请人： TEXAS INSTRUMENTS INC.

发明人： Liang, Jie

IPC分类号： H04N7/26

CPC分类号： H04N19/1883 ,  H04N19/107 ,  H04N19/164 ,  H04N19/17 ,  H04N19/63 ,  H04N19/647

摘要： A method of image encoding using subband decomposition followed by separate coding of the highest level lowpass image plus zerotree coding of the higher bands.

摘要翻译： 一种使用子带分解进行图像编码的方法，随后是对较高级别的最高级别低通图像加零树编码的单独编码。