-
公开(公告)号：EP2719184B1
公开(公告)日：2018-09-12
申请号：EP12797266.9
申请日：2012-05-31
申请人： HFI Innovation Inc.
发明人： CHUANG, Tzu-Der , CHEN, Ching-Yeh , HUANG, Yu-Wen , LEI, Shaw-Min , FU, Chih-Ming , TSAI, Chia-Yang
IPC分类号： H04N19/30 , H04N19/61 , H04N19/187 , H04N19/33 , H04N19/70
CPC分类号： H04N19/13 , H04N19/119 , H04N19/146 , H04N19/154 , H04N19/187 , H04N19/30 , H04N19/33 , H04N19/61 , H04N19/70 , H04N19/82 , H04N19/86 , H04N19/96
摘要： A method and apparatus for scalable video coding are disclosed, wherein the video data is configured into a Base Layer (BL) and an Enhancement Layer (EL) and wherein the EL has higher spatial resolution or better video quality than the BL. According to embodiments of the present invention, information from the base layer is exploited for coding the enhancement layer. The information coding for the enhancement layer includes CU structure, motion information, motion information, MVP/merge candidates, intra prediction mode, residual quadtree information, texture information, residual information, context adaptive entropy coding, Adaptive Loop Filter (ALF), Sample Adaptive Offset (SAO), and deblocking filter.
-
公开(公告)号：EP2152008B1
公开(公告)日：2018-08-29
申请号：EP09166249.4
申请日：2009-07-23
发明人： Xia, Zhi Jin , Chen, Zhibo , Wu, Yuwen
IPC分类号： H04N19/176 , H04N19/61 , H04N19/80 , H04N19/33 , H04N19/86 , H04N19/895
CPC分类号： H04N19/176 , H04N19/33 , H04N19/61 , H04N19/80 , H04N19/86 , H04N19/895
摘要： The invention is related to prediction of a lost or damaged block of an enhanced spatial layer frame. A method for predicting a lost or damaged block of an enhanced spatial layer frame (E5) comprises the steps of determining an adjuvant frame (E3) in the enhanced spatial layer (EL) by help of reference information from a lower spatial layer frame (B5) corresponding said enhanced spatial layer frame (E5), generating an information reduced block by help of said adjuvant frame (E3) and predicting the lost or damaged block by help of the information reduced block. The reference information of the corresponding lower spatial layer frame can be decoded independently from any lower spatial layer reference frame and the adjuvant enhanced spatial layer frame is already decoded. Thus, the computational effort is reduced. By generation of the information reduced block the prediction is made smoother which makes it less vivid and therefore less salient to a user.
-
公开(公告)号：EP1738588B1
公开(公告)日：2018-08-15
申请号：EP05730619.3
申请日：2005-03-31
IPC分类号： H04N19/61 , H04N19/33 , H04N19/523 , H04N19/59
CPC分类号： H04N19/59 , H04N19/33 , H04N19/523 , H04N19/61
摘要： A video decoder, a video decoding method, a video encoder and a video encoding method are disclosed. A video decoder for decoding a video bitstream for an image block includes a motion vector resolution reducer and a motion compensator. The motion vector resolution reducer is for receiving decoded high resolution motion vectors included in the video bitstream and for reducing an accuracy of the high resolution motion vectors to correspond to a low resolution. The motion compensator, in signal communication with the motion vector resolution reducer, is for forming a motion compensated high resolution prediction using the reduced accuracy motion vectors. The video encoder for encoding scalable video comprises a motion compensator for forming a motion compensated full resolution prediction and combining the motion compensated full resolution prediction from an image block to form a prediction residual. The prediction residual is downsampled to form a low resolution downsampled prediction residual and then coded.
-
公开(公告)号：EP2974313B1
公开(公告)日：2018-07-11
申请号：EP14764414.0
申请日：2014-03-12
申请人： HFI Innovation Inc.
发明人： CHUANG, Tzu-Der , CHEN, Ching-Yeh , HUANG, Yu-Wen
IPC分类号： H04N19/33 , H04N19/503 , H04N19/513 , H04N19/61 , H04N19/39 , H04N19/53
CPC分类号： H04N19/33 , H04N19/39 , H04N19/503 , H04N19/513 , H04N19/53 , H04N19/61
摘要： A method of inter-layer motion vector scaling using an inter-layer MV scaling factor to reduce computational complexity is disclosed. In one embodiment, image size information regarding the EL picture and the BL picture of the video sequence is received. An inter-layer motion vector (MV) scaling factor is determined based on the image size information. Scaled MVs are determined based on the BL MVs and the inter-layer MV scaling factor. The scaled MVs are then provided for inter-layer coding of the EL picture. In another embodiment, an inter-layer position-mapping scaling factor is determined based on the image size information regarding the EL picture and the BL picture. BL mapping positions corresponding to EL pixel positions are determined based on the EL pixel positions and the inter-layer position-mapping scaling factor. The up-sampled BL picture at the BL mapping positions is then provided for inter-layer coding of the EL picture.
-
公开(公告)号：EP3241352A4
公开(公告)日：2018-05-30
申请号：EP15875349
申请日：2015-12-29
IPC分类号： H04N19/105 , H04N19/136 , H04N19/172 , H04N19/187 , H04N19/30 , H04N19/33 , H04N19/46 , H04N19/70
CPC分类号： H04N19/33 , H04N19/105 , H04N19/136 , H04N19/172 , H04N19/46 , H04N19/70
摘要： There is provided methods, apparatuses and computer program products for video coding and decoding. A first part of a first coded video representation is decoded, and information on decoding a second coded video representation is received and parsed. The coded second representation differs from the first coded video representation in chroma format, sample bit depth, color gamut and/or spatial resolution, and the information indicates if the second coded video representation may be decoded using processed decoded pictures of the first coded video representation as reference pictures. If the information indicates that the second coded video representation may be decoded using processed decoded pictures of the first coded video representation as a prediction reference, decoded picture(s) of the first part is/are processed into processed decoded picture(s) by resampling and/or sample value scaling; and decoding a second part of a second video representation using said processed decoded picture(s) as reference pictures.
-
46.发明公开
公开(公告)号：EP3308540A1
公开(公告)日：2018-04-18
申请号：EP15894584.0
申请日：2015-06-09
发明人： LI, Bin , XU, Jizheng
IPC分类号： H04N19/124 , H04N19/33
摘要： Approaches to robust encoding and decoding of escape-coded pixels in a palette mode are described. For example, sample values of escape-coded pixels in palette mode are encoded/decoded using a binarization process that depends on a constant value of quantization parameter (“QP”) for the sample values. Or, as another example, sample values of escape-coded pixels in palette mode are encoded/decoded using a binarization process that depends on sample depth for the sample values. Or, as still another example, sample values of escape-coded pixels in palette mode are encoded/decoding using a binarization process that depends on some other fixed rule. In example implementations, these approaches avoid dependencies on unit-level QP values when parsing the sample values of escape-coded pixels, which can make encoding/decoding more robust to data loss.
-
公开(公告)号：EP3262840A1
公开(公告)日：2018-01-03
申请号：EP16717063.8
申请日：2016-04-07
发明人： LU, Mei-Hsuan , LEE, Ming-Chieh
IPC分类号： H04N21/2343 , H04N19/40 , H04N19/70 , H04N19/30 , H04N19/33
CPC分类号： H04N7/15 , H04N19/103 , H04N19/154 , H04N19/184 , H04N19/31 , H04N19/40 , H04N19/48 , H04N19/65 , H04N19/70 , H04N21/2343 , H04N21/234381
摘要： Ways to mitigate loss in inter-operability scenarios for digital video are presented. For example, a bitstream modification tool (such as a bitstream rewriter running on a network node of a videoconferencing system) receives an incoming bitstream of encoded video (e.g., from an encoder that uses a first loss recovery strategy). The bitstream modification tool processes the incoming bitstream of encoded video to produce an outgoing bitstream of encoded video. In doing so, the bitstream modification tool changes at least one syntax element between the incoming bitstream and the outgoing bitstream so as to mitigate picture loss effects during decoding of the outgoing bitstream under lossy delivery conditions. The bitstream modification tool outputs the outgoing bitstream. In this way, the bitstream modification tool can help avoid blank screens, frozen screens, or other failures during decoding under lossy delivery conditions (e.g., with a decoder that uses a different loss recovery strategy).
-
公开(公告)号：EP3254466A1
公开(公告)日：2017-12-13
申请号：EP16703115.2
申请日：2016-02-04
IPC分类号： H04N19/597 , H04N19/70 , H04N19/33
CPC分类号： H04N19/597 , H04N19/105 , H04N19/157 , H04N19/187 , H04N19/54 , H04N19/543 , H04N19/58 , H04N19/70
摘要： 3D video coding/decoding supporting inter-component prediction is made operatable with respect to a broader range of settings with respect to accompanying individual views with depth and deactivation/enablement of inter-component prediction, by using one or more flags in the data stream to control the enablement/disablement of the availability of inter-component prediction for coding units of a current picture.
-
公开(公告)号：EP2116060B1
公开(公告)日：2017-11-15
申请号：EP08705757.6
申请日：2008-01-07
-
公开(公告)号：EP3205093A1
公开(公告)日：2017-08-16
申请号：EP15744344.1
申请日：2015-06-16
IPC分类号： H04N19/117 , H04N19/186 , H04N19/187 , H04N19/33 , H04N19/85
CPC分类号： H04N19/186 , H04N19/117 , H04N19/187 , H04N19/33 , H04N19/85
摘要： A method for processing image and video data, comprising providing high dynamic range image data (HDR) and a corresponding low dynamic range image data (LDR). The LDR image is encoded in a legacy code stream, while a residual code stream is generated and encoded containing data necessary for the reconstruction of the HDR image in a decoding phase. To generate the residual code stream, LDR image data are processed so as to obtain a processed LDR* image, then a component data of the HDR image and a corresponding component of the processed LDR* image are selected and residual data of the selected component data are calculated by dividing the component of the processed LDR* image data by the component of the HDR image data. The residual data of the selected component are scaled into the range of values comprised between 0 and 1 and are then encoded in a residual code stream. A decoding method is also disclosed which allows reconstruction of an HDR image from a legacy code stream and a residual data code stream.
摘要翻译： 一种用于处理图像和视频数据的方法，包括提供高动态范围图像数据（HDR）和相应的低动态范围图像数据（LDR）。 LDR图像被编码在传统码流中，而残留码流被生成并被编码，其包含在解码阶段重建HDR图像所必需的数据。 为了生成残差码流，处理LDR图像数据以获得经处理的LDR *图像，然后选择HDR图像的分量数据和处理的LDR *图像的对应分量，并且选择的分量数据的残差数据 通过将处理的LDR *图像数据的分量除以HDR图像数据的分量来计算。 所选分量的残差数据被缩放到包含在0和1之间的值的范围内，然后被编码到残差码流中。 还公开了一种解码方法，其允许从遗留码流和残差数据码流重建HDR图像。
-
-
-
-
-
-
-
-
-
搜索结果
567 条记录 (耗时 0.023 秒)
