公开(公告)号：WO0186960A2

公开(公告)日：2001-11-15

申请号：PCT/US0115035

申请日：2001-05-10

Applicant: PICTURETEL CORP

Inventor： QUNSHAN GU

IPC: G06T9/00 ,  H04N7/15 ,  H04N7/173 ,  H04N7/26 ,  H04N7/36 ,  H04N7/50

CPC classification number: H04N7/152 ,  H04N19/162 ,  H04N19/423 ,  H04N19/433 ,  H04N19/46 ,  H04N19/573 ,  H04N19/58 ,  H04N19/61 ,  H04N19/70

Abstract: There is provided herein a system for video encoding and decodingthat uses short-term and long-term buffers. Reconstruction of each block within an image may be performed with reference to one of the buffers, so that different portions of an image, or different images in a sequence, may be reconstructed using different buffers. There is also provided herein systems for signaling, between an encoder and a decoder, the use of the above buffers and related address information. The encoder may, for example, transmit information identifying video data as corresponding to a particular one of the buffers, and the decoder may transmit information relating to the size of the short-term and the long-term buffer. The buffer sizes may be changed during transmission of video data by including buffer allocation information in the video data. Also disclosed herein are methods and apparatuses according to the above.

Abstract translation: 这里提供了一种用于使用短期和长期缓冲器的视频编码和解码系统。 可以参照缓冲器之一来执行图像内的每个块的重建，使得可以使用不同的缓冲器重构图像的不同部分或序列中的不同图像。 还提供了用于在编码器和解码器之间进行信令的系统，使用上述缓冲器和相关的地址信息。 编码器可以例如发送识别与缓冲器中的特定缓冲器相对应的视频数据的信息，并且解码器可以发送与短期和长期缓冲器的大小有关的信息。 通过在视频数据中包括缓冲器分配信息，可以在视频数据传输期间改变缓冲器大小。 本文还公开了根据上述的方法和装置。

公开(公告)号：WO01075776A1

公开(公告)日：2001-10-11

申请号：PCT/US2001/010899

申请日：2001-04-03

IPC: A61B5/00 ,  G06F19/00 ,  G06Q50/00 ,  G06T1/00 ,  G06T7/00 ,  H04N1/21 ,  H04N7/26 ,  H04N7/30 ,  G06K9/00

CPC classification number: G06F19/324 ,  G06F19/00 ,  G06F19/3418 ,  G06T7/0012 ,  G06T2207/10072 ,  G06T2207/10116 ,  H04N1/217 ,  H04N19/12 ,  H04N19/162 ,  H04N19/17 ,  H04N19/60 ,  H04N19/99

Abstract: A remote view station (26) is communicatively coupled to an image server (24) and receives a compressed version of source medical images. The remote view station (26) uncompresses and displays the received medical image. A medical professional, such as a pathologist, can select a region of the displayed medical image. Region information is transmitted back to the image server that applies image analysis operations on a region of the source medical image that corresponds to the selected region of the compressed medical image. In this manner, the data loss that occurs during image compression does not effect the image analysis operations. As such, the image analysis operations produce more accurate results than if the operations were applied by remote view station to the uncompressed image.

Abstract translation: 远程观察站（26）通信地耦合到图像服务器（24）并且接收源医学图像的压缩版本。 远程观察站（26）解压缩并显示所接收的医学图像。 诸如病理学家的医学专业人员可以选择所显示的医学图像的区域。 区域信息被发送回到图像服务器，该图像服务器对与所压缩的医学图像的所选择的区域相对应的源医学图像的区域应用图像分析操作。 以这种方式，在图像压缩期间发生的数据丢失不影响图像分析操作。 因此，与远程观察站应用于未压缩图像的操作相比，图像分析操作产生更准确的结果。

公开(公告)号：WO00018130A1

公开(公告)日：2000-03-30

申请号：PCT/US1999/021831

申请日：1999-09-20

IPC: G06T9/00 ,  H04N19/895 ,  H04N7/30 ,  H04N7/50

CPC classification number: H04N19/69 ,  G06T9/005 ,  H04N19/107 ,  H04N19/126 ,  H04N19/132 ,  H04N19/149 ,  H04N19/15 ,  H04N19/152 ,  H04N19/154 ,  H04N19/162 ,  H04N19/17 ,  H04N19/176 ,  H04N19/192 ,  H04N19/196 ,  H04N19/198 ,  H04N19/30 ,  H04N19/503 ,  H04N19/523 ,  H04N19/587 ,  H04N19/60 ,  H04N19/61 ,  H04N19/66 ,  H04N19/68 ,  H04N19/895

Abstract: During video coding, a transform such as a discrete cosine transform (DCT) is applied to blocks of image data (e.g., motion-compensated interframe pixel differences) and the resulting transform coefficients for each block are quantized at a specified quantization level. Notwithstanding the fact that some coefficients are quantized to non-zero values, at least one non-zero quantized coefficient is treated as if it had a value of zero for purposes of further processing (e.g., run-length encoding (RLE) the quantized data. When segmentation analysis is performed to identify two or more different regions of interest in each frame, the number of coefficients that are treated as having a value of zero for RLE is different for different regions of interest (e.g., more coefficients for less-important regions). In this way, the number of bits used to encode image data are reduced to satisfy bit rate requirements without (1) having to drop frames adaptively, while (2) conforming to constraints that may be imposed on the magnitude of change in quantization level from frame to frame.

Abstract translation: 在视频编码期间，将诸如离散余弦变换（DCT）的变换应用于图像数据块（例如，运动补偿帧间像素差异），并且以指定的量化级量对每个块的所得到的变换系数进行量化。 尽管有些系数被量化为非零值，但是为了进一步处理（例如，游程长度编码（RLE））量化数据，至少一个非零量化系数被视为具有零值 当进行分割分析以识别每个帧中的两个或更多个不同的感兴趣区域时，对于不同的感兴趣区域，被视为具有值为零的RLE的系数的数量是不同的（例如，更少的重要系数 这样，减少了用于编码图像数据的位数，以满足比特率要求，而不需要（1）自适应丢帧，而（2）符合可能施加于变化幅度的约束 从帧到帧的量化级别。

公开(公告)号：WO99049412A1

公开(公告)日：1999-09-30

申请号：PCT/US1998/019065

申请日：1998-09-15

IPC: G06T9/00 ,  H04N1/41 ,  H04N7/26 ,  G06K9/00

CPC classification number: H04N19/649 ,  H04N19/115 ,  H04N19/127 ,  H04N19/129 ,  H04N19/146 ,  H04N19/147 ,  H04N19/162 ,  H04N19/167 ,  H04N19/17 ,  H04N19/30 ,  H04N19/36 ,  H04N19/61 ,  H04N19/63 ,  H04N19/645 ,  H04N19/647 ,  H04N19/70

Abstract: A method and apparatus for encoding (622) digital image data wherein a region of interest (606) can be specified either before the encoding process has begun or during the encoding process, such that the priority (616) of the encoder outputs are modified so as to place more emphasis on the region of interest, therefore increasing the speed and/or increasing the fidelity of the reconstructed region of interest. The system, therefore, enables more effective reconstruction of digital images over communication lines.

Abstract translation: 一种编码（622）数字图像数据的方法和装置，其中可以在编码过程开始之前或在编码处理期间指定感兴趣区域（606），使得编码器输出的优先级（616）被修改为 以便更加重视感兴趣的区域，从而提高重建感兴趣区域的速度和/或增加保真度。 因此，该系统能够通过通信线路更有效地重建数字图像。

公开(公告)号：WO1998006222A1

公开(公告)日：1998-02-12

申请号：PCT/JP1997002696

申请日：1997-08-01

Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. ,  YAMAGUCHI, Takao ,  KAMOGAWA, Akira ,  NOBORI, Kunio

Inventor： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

IPC: H04N07/32

CPC classification number: H04N7/52 ,  H04N19/124 ,  H04N19/132 ,  H04N19/152 ,  H04N19/154 ,  H04N19/159 ,  H04N19/162 ,  H04N19/166 ,  H04N19/172 ,  H04N19/42 ,  H04N19/44 ,  H04N19/61 ,  H04N19/70 ,  H04N21/2343 ,  H04N21/23614 ,  H04N21/2362 ,  H04N21/2368 ,  H04N21/2401 ,  H04N21/2662 ,  H04N21/4341 ,  H04N21/4345 ,  H04N21/4348 ,  H04N21/4424 ,  H04N21/6377

Abstract: In order to control the quantity of encoding in accordance with the processing condition of a terminal at the time of simultaneously decoding and synthesizing a plurality of videos and audios, a picture and sound decoding device is provided with a reception managing section (11) which receives information, a separating section (12) which analyzes and separates received information, a priority determining section (14) which determines the processing priority of the pictures separated by the separating section (12), a picture expanding section (18) which expands the pictures in accordance with the priority determined by the determining section (14), a picture synthesizing section (19) which performs picture synthesization based on the expanded pictures, a synthesized result storing section (22) which stores the synthesized pictures, a reproducing time managing section (23) which manages the starting time of reproduction, and an output section (24) which outputs synthesis results in accordance with the information from the managing section (23).

Abstract translation: 为了在同时解码和合成多个视频和音频时根据终端的处理条件来控制编码量，图像和声音解码装置设置有接收管理部分（11），其接收 信息，分离和分离接收的信息的分离部分（12），确定由分离部分（12）分离的图像的处理优先级的优先级确定部分（14），扩展图像的图像扩展部分 根据由确定部分确定的优先级，基于扩展图像执行图像合成的图像合成部分（19），存储合成图像的合成结果存储部分（22），再现时间管理部分 （23），以及输出部（24），其输出合成结果 与管理部门（23）的信息跳舞。

公开(公告)号：WO1997017669A1

公开(公告)日：1997-05-15

申请号：PCT/US1996018017

申请日：1996-11-07

Applicant: STORM TECHNOLOGY, INC. ,  STARREVELD, Adolf, G. ,  LIGTENBERG, Adrianus ,  GULLAND, William, J.

Inventor： STORM TECHNOLOGY, INC.

IPC: G06K09/36

CPC classification number: G06F17/3028 ,  G06F17/30277 ,  H04N19/115 ,  H04N19/162 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/192 ,  H04N19/30 ,  H04N19/36 ,  H04N19/44 ,  H04N19/60 ,  H04N19/63

Abstract: A method of processing an input image for storage includes decomposing (50) the input image into a number of images at various resolutions, subdividing (65) at least some of these images into tiles (rectangular arrays) and storing (75) a block (referred to as the "tile block") representing each of the tiles, along with an index that specifies the respective locations of the tile blocks. In specific embodiments, the tiles are 64 x 64 pixels or 128 x 128 pixels. The representations of the tiles are typically compressed versions (78) of the tiles. In a specific embodiment, JPEG compression is used. In a specific embodiment, an operand image is recursively decomposed to produce a reduced image and a set of additional (or complementary) pixel data. At the first stage, the operand image is normally the input image, and, for each subsequent stage, the operand image is the reduced image from the previous stage. At each stage, the reduced image is at a characteristic resolution that is lower than the resolution of the operand image. The processing is typically carried out until the resulting reduced image is of a desired small size (55).

Abstract translation: 一种处理用于存储的输入图像的方法包括：将输入图像分解成多个图像，以各种分辨率，将这些图像中的至少一些划分为瓦片（矩形阵列）并将（75）块（ 被称为“瓦片块”），以及指定瓦片块的各个位置的索引。 在具体实施例中，瓦片是64×64像素或128×128像素。 瓦片的表示通常是瓦片的压缩版本（78）。 在具体实施例中，使用JPEG压缩。 在具体实施例中，操作数图像被递归地分解以产生缩小图像和一组附加（或互补）像素数据。 在第一阶段，操作数图像通常是输入图像，并且对于每个后续阶段，操作数图像是来自前一阶段的缩小图像。 在每个阶段，缩小图像的特征分辨率低于操作数图像的分辨率。 通常进行处理，直到得到的缩小图像为期望的小尺寸（55）为止。

公开(公告)号：WO1996027987A1

公开(公告)日：1996-09-12

申请号：PCT/JP1995000376

申请日：1995-03-08

Applicant: HITACHI, LTD. ,  NAKAYA, Yuichiro ,  FUJII, Yukio ,  NAGATA, Minoru ,  MARUYAMA, Masanori

Inventor： HITACHI, LTD.

IPC: H04N07/14

CPC classification number: H04N7/56 ,  H04N7/142 ,  H04N19/107 ,  H04N19/162 ,  H04N19/164 ,  H04N19/176 ,  H04N19/61 ,  H04N2007/145

Abstract: The electric power consumption by a terminal used for communication of multimedia information is controlled by changing the quality of transmitted information. The terminal is provided with input means (101, 102, 106 and 107) through which such information as images and sounds is inputted, channel control sections (123 and 124) which output the input information to channels and receive information from the channels, output means (103, 104, 108, 109 and 105) which output the information received from the channels in the form of images, sounds, etc., a codec means (110) which is provided between the input and output means and the control sections, encodes the input information in one of multiple encoding modes in which electric power is differently consumed, and decodes the information inputted from the channels, and a control section (133) which controls the selection of the encoding mode. This terminal can continue information communication for a required period of time at minimum power consumption at the sacrifice of the quality of transmitted information. Therefore, either the power consumption or quality of information can be adequately selected according to the transmission.

Abstract translation: 用于多媒体信息通信的终端的电力消耗通过改变发送信息的质量来控制。 终端设置有输入图像和声音等信息的输入装置（101,102,106和107），将输入信息输出到信道并从信道接收信息的信道控制部分（123和124），输出 输出以图像，声音等形式从信道接收的信息的装置（103,104,108,109和105），设置在输入和输出装置与控制部分之间的编解码装置（110） 以不同消耗电力的多个编码模式之一对输入信息进行编码，并对从信道输入的信息进行解码，以及控制编码模式选择的控制部（133）。 该终端可以在牺牲所发送的信息的质量的情况下，以最小功耗持续所需时间段的信息通信。 因此，可以根据传输来适当地选择功耗或信息质量。

公开(公告)号：WO2018220260A1

公开(公告)日：2018-12-06

申请号：PCT/FI2018/050292

申请日：2018-04-24

Applicant: NOKIA TECHNOLOGIES OY

Inventor： AFLAKI BENI, Payman ,  HANNUKSELA, Miska

IPC: H04N19/167 ,  H04N19/186 ,  H04N19/17 ,  H04N19/30 ,  H04N21/4728

CPC classification number: H04N19/186 ,  H04N19/124 ,  H04N19/162 ,  H04N19/167

Abstract: There are disclosed various methods, apparatuses and computer program products for image compression. In accordance with an embodiment a method comprises receiving an image presented by luma and chroma components; determining at least two different areas in the image; and encoding the chroma component of each of the at least two areas differently.

公开(公告)号：WO2018127035A1

公开(公告)日：2018-07-12

申请号：PCT/CN2018/070029

申请日：2018-01-02

Applicant: MEDIATEK INC.

Inventor： LIN, Jian-Liang ,  WANG, Peng ,  LIN, Hung-Chih ,  CHANG, Shen-Kai

IPC: H04N21/2343 ,  G06T9/00

CPC classification number: H04N21/816 ,  G06T9/00 ,  H04N19/132 ,  H04N19/162 ,  H04N19/17 ,  H04N19/597

Abstract: A video processing method includes receiving an omnidirectional content corresponding to a sphere, generating a projection-based frame according to the omnidirectional content and a pyramid projection layout, and encoding, by a video encoder, the projection-based frame to generate a part of a bitstream. The projection-based frame has a 360-degree content represented by a base projection face and a plurality of lateral projection faces packed in the pyramid projection layout. The base projection face and the lateral projection faces are obtained according to at least projection relationship between a pyramid and the sphere.

公开(公告)号：WO2018071421A1

公开(公告)日：2018-04-19

申请号：PCT/US2017/055944

申请日：2017-10-10

Applicant: QUALCOMM INCORPORATED

Inventor： HENDRY, Fnu ,  WANG, Ye-Kui

IPC: H04N21/2343 ,  H04N21/4402 ,  H04N19/70 ,  H04N19/172 ,  H04N19/103 ,  H04N19/162 ,  H04N19/33 ,  H04N21/845 ,  H04N21/8543

CPC classification number: H04N5/23238 ,  H04L67/02 ,  H04N19/103 ,  H04N19/162 ,  H04N19/172 ,  H04N19/33 ,  H04N19/61 ,  H04N19/70 ,  H04N21/21805 ,  H04N21/2343 ,  H04N21/234318 ,  H04N21/234327 ,  H04N21/23439 ,  H04N21/2662 ,  H04N21/440227 ,  H04N21/440245 ,  H04N21/816 ,  H04N21/84 ,  H04N21/845 ,  H04N21/8543

Abstract: Techniques and systems are provided for processing video data. For example, 360-degree video data can be obtained for processing by an encoding device or a decoding device. The 360-degree video data includes pictures divided into motion-constrained tiles. The 360-degree video data can be used to generate a media file including a plurality of tracks. Each of the plurality of tracks contain a set of at least one of the motion-constrained tiles. The set of at least one of the motion-constrained tiles corresponds to at least one of a plurality of viewports of the 360-degree video data. A first tile representation can be generated for the media file. The first tile representation encapsulates a first track of the plurality of tracks, and the first track includes a first set of at least one of the motion-constrained tiles at a first tile location in the pictures of the 360-degree video data. The first set of at least one of the motion-constrained tiles corresponds to a viewport of the 360-degree video data.

Abstract translation: 提供了用于处理视频数据的技术和系统。 例如，可以获得360度视频数据以供编码装置或解码装置处理。 360度视频数据包括划分成运动约束图块的图片。 360度视频数据可以用于生成包括多个轨道的媒体文件。 多个轨道中的每一个包含一组至少一个运动受限的瓦片。 该至少一个运动约束片的组对应于360度视频数据的多个视口中的至少一个。 可以为媒体文件生成第一个拼贴表示。 第一图块表示封装多个轨道中的第一轨道，并且第一轨道包括在360度视频数据的图片中的第一图块位置处的运动约束图块中的至少一个的第一集合。 运动约束图块中的至少一个的第一集合对应于360度视频数据的视口。