公开(公告)号：US20220312026A1

公开(公告)日：2022-09-29

申请号：US17704219

申请日：2022-03-25

Applicant: ATEME

Inventor： Thibaud Biatek ,  Mohsen Abdoli ,  Christophe Gisquet

IPC: H04N19/46 ,  H04N19/167 ,  H04N19/119 ,  H04N19/176 ,  H04N19/52 ,  H04N19/139 ,  H04N19/159 ,  H04N19/109 ,  H04N19/105

Abstract: A method for processing a current image of a set of images is proposed, which comprises, at a video processing device comprising a processor: determining a target pixel area in the current image; obtaining a hidden image of the set of images, the hidden image comprising a source pixel area; dividing the current image into blocks for an encoding of the blocks of the current image according to an encoding sequence; and for a block of the target pixel area of the current image: determining a motion vector pointing to a block of the source pixel area in the hidden image corresponding to the block of the target pixel area, and based on the motion vector, encoding the block of the target pixel area according to a temporal correlation prediction mode pursuant to which no pixel residual representing a difference between the block of the target pixel area and the corresponding block of the source pixel area is generated.

公开(公告)号：US11451768B2

公开(公告)日：2022-09-20

申请号：US16815567

申请日：2020-03-11

Applicant: ATEME

Inventor： Elie Mora ,  Mohsen Abdoli ,  Thomas Guionnet

IPC: H04N19/103 ,  G06T7/11 ,  G06T7/90 ,  G06F17/16 ,  G06N7/00

Abstract: A method of processing an image divided into a plurality of pixel blocks which are processed according to a processing sequence is provided, which comprises, for a current pixel block: determining an application area comprising a set of pixels in blocks preceding the current block in the processing sequence; performing a gradient analysis on at least one pixel of the application area; selecting at least two intra prediction video coding modes among a plurality of intra prediction video coding modes usable for processing the current pixel block, wherein at least one of the selected intra prediction video coding modes is selected based on the gradient analysis; determining a plurality of predictors of the current pixel block based on the at least two selected intra prediction video coding modes; and generating a predictor of the current pixel block based on the determined plurality of predictors.

公开(公告)号：US20220070451A1

公开(公告)日：2022-03-03

申请号：US17409134

申请日：2021-08-23

Applicant: ATEME

Inventor： Mohsen ABDOLI

IPC: H04N19/11 ,  H04N19/186 ,  H04N19/176 ,  H04N19/119 ,  H04N19/136 ,  H04N19/159 ,  H04N19/593

Abstract: An image processing method includes: extracting from the image component images including first and second chroma component images; dividing each component image into component pixel block sets; and defining processing sequences of the component pixel blocks; for a current chroma component pixel block, performing intra mode prediction to obtain intra prediction modes for the current chroma component pixel block. The intra mode prediction method includes: determining an application area including a set of pixels in a pixel block of one of the component images. The pixel block has already been processed according to a respective processing sequence defined for the one of the component images, performing a gradient analysis on a pixel of the application area, selecting, based on results of the gradient analysis, a intra prediction video coding mode among intra prediction video coding modes usable for encoding and/or decoding the current chroma component pixel block.

公开(公告)号：US10440384B2

公开(公告)日：2019-10-08

申请号：US15529031

申请日：2015-11-20

Applicant: ATEME

Inventor： Zineb Agyo ,  Mathieu Monnier ,  Jean-Marc Thiesse ,  Pierre Larbier

IPC: H04N19/139 ,  H04N19/52 ,  H04N19/147 ,  H04N19/11 ,  H04N19/109 ,  H04N19/19 ,  H04N19/573 ,  H04N19/154 ,  H04N19/176

Abstract: Disclosed is a method for encoding a first image in a set of images, in which the first image is cut into blocks, each block being encoded according to one from a plurality of encoding modes including at least one temporal correlation prediction encoding mode using a plurality of images from the set of images. The method includes, for a current block of the first image: determining a first motion estimation vector of the current block, determining a value of a visual distortion metric for a temporal correlation prediction encoding mode, the visual distortion metric using a distance between a first temporal prediction vector of the current block pointing to the second image and the first motion estimation vector of the current block, and using the value of the visual distortion metric to encode the current block.

公开(公告)号：US08279944B2

公开(公告)日：2012-10-02

申请号：US12532384

申请日：2008-03-20

Applicant: Pierre Larbier ,  Marc Baillavoine

Inventor： Pierre Larbier ,  Marc Baillavoine

IPC: H04N21/2662

CPC classification number: H04N19/174 ,  H04N19/107 ,  H04N19/124 ,  H04N19/129 ,  H04N19/14 ,  H04N19/146 ,  H04N19/61

Abstract: The invention relates to a method and a device for regulating the encoding bit rate of video images relative to a target image size). The images being subdivided into zones to be encoded, the complexity of encoding of each zone is distinguished among the zones, the zones to be encoded are classified according to a determined order of complexity, each zone is successively encoded according to the decreasing order of complexity, successively minimizing the estimated encoding error of each zone, the final size of each image relative to the target size and the bit rate of the sequence of video images. Application to the video encoding of images of video sequences, in particular to networked video surveillance.

Abstract translation: 本发明涉及一种用于调节视频图像相对于目标图像大小的编码比特率的方法和装置。 图像被细分为要编码的区域，每个区域的编码复杂度在区域之间被区分，要编码的区域根据确定的复杂度顺序进行分类，每个区域根据复杂度的递减顺序依次编码 连续地最小化每个区域的估计编码误差，每个图像相对于目标大小的最终大小和视频图像序列的比特率。 应用于视频序列图像的视频编码，特别是网络视频监控。

公开(公告)号：US20100296586A1

公开(公告)日：2010-11-25

申请号：US12532384

申请日：2008-03-20

Applicant: Pierre Larbier ,  Marc Baillavoine

Inventor： Pierre Larbier ,  Marc Baillavoine

IPC: H04N7/12

CPC classification number: H04N19/174 ,  H04N19/107 ,  H04N19/124 ,  H04N19/129 ,  H04N19/14 ,  H04N19/146 ,  H04N19/61

Abstract: The invention relates to a method and a device for regulating the encoding bit rate of video images relative to a target image size. The images being subdivided into zones to be encoded, the complexity of encoding of each zone is distinguished among the zones, the zones to be encoded are classified according to a determined order of complexity, each zone is successively encoded according to the decreasing order of complexity, successively minimizing the estimated encoding error of each zone, the final size of each image relative to the target size and the bit rate of the sequence of video images. Application to the video encoding of images of video sequences, in particular to networked video surveillance.

Abstract translation: 本发明涉及一种用于调节视频图像相对于目标图像尺寸的编码比特率的方法和装置。 图像被细分为要编码的区域，每个区域的编码复杂度在区域之间被区分，要编码的区域根据确定的复杂度顺序进行分类，每个区域根据复杂度的递减顺序依次编码 连续地最小化每个区域的估计编码误差，每个图像相对于目标大小的最终大小和视频图像序列的比特率。 应用于视频序列图像的视频编码，特别是网络视频监控。

公开(公告)号：US07834785B2

公开(公告)日：2010-11-16

申请号：US12306556

申请日：2007-06-27

Applicant: Tchi Southivong

Inventor： Tchi Southivong

IPC: H03M7/00

CPC classification number: H03M7/4006 ,  H04N19/61 ,  H04N19/91

Abstract: An encoding device and method, of CABAC type, for an initial stream of binary digital information intended to generate an outgoing stream to form video images, after decoding, the method included the following steps: bit-by-bit analysis of the successive series of bits of the initial binary stream so as to deduce therefrom, for each bit, an interval representing the probability of occurrence associated with this bit, this interval being defined by its size CIR and its lower bound CIL, analysis of this interval so as to ensure, if necessary, a renormalization thereof. The renormalization is non-iterative and for each bit of the initial stream is compliant with the appended figure in which: M is the length of the sequence S of high-order bits common to CIL and CIR, N is the integer number such that CIR.2N-1

Abstract translation: CABAC类型的编码装置和方法，用于生成输出流以形成视频图像的二进制数字信息的初始流，在解码之后，该方法包括以下步骤：连续序列的逐位分析 从而从每个位推算出与该位相关联的发生概率的间隔，该间隔由其大小CIR及其下限CIL定义，该间隔的分析以确保 如果需要，其重新规范化。 重新归一化是非迭代的，并且初始流的每个比特符合附图，其中：M是CIL和CIR共同的高阶比特的序列S的长度，N是整数，使得CIR .2N-1 <0.25＆nlE; CIR.2N，BO是等待插入的位数。