公开(公告)号：US20190116357A1

公开(公告)日：2019-04-18

申请号：US15876522

申请日：2018-01-22

Applicant: Mitsubishi Electric Research Laboratories, Inc.

Inventor： Dong Tian ,  Eduardo Pavez ,  Robert Cohen ,  Anthony Vetro

IPC: H04N19/105 ,  H04N19/91 ,  H04N19/124 ,  H04N19/176 ,  G06T15/08

Abstract: A point cloud encoder including an input interface to accept a dynamic point cloud including a sequence of point cloud frames of a scene. A processor encodes blocks of a current point cloud frame to produce an encoded frame. Wherein, for encoding a current block of the current point cloud frame, a reference block is selected similar to the current block according to a similarity metric to serve as a reference to encode the current block. Pair each point in the current block to a point in the reference block based on values of the paired points. Encode the current block based on a combination of an identification of the reference block and residuals between the values of the paired points. Wherein the residuals are ordered according to an order of the values of the points in the reference block. A transmitter transmits the encoded frame over a communication channel.

公开(公告)号：US20170214943A1

公开(公告)日：2017-07-27

申请号：US15004301

申请日：2016-01-22

Applicant: Mitsubishi Electric Research Laboratories, Inc.

Inventor： Robert Cohen ,  Dong Tian ,  Anthony Vetro

IPC: H04N19/91 ,  H04N19/593 ,  H04N19/136 ,  H04N19/184 ,  G06T3/40 ,  H04N19/176 ,  H04N19/61

CPC classification number: H04N19/91 ,  G06T3/40 ,  G06T9/00 ,  H04N19/136 ,  H04N19/176 ,  H04N19/184 ,  H04N19/593 ,  H04N19/61

Abstract: A method compresses a point cloud composed of a plurality of points in a three-dimensional (3D) space by first acquiring the point cloud with a sensor, wherein each point is associated with a 3D coordinate and at least one attribute. The point cloud is partitioned into an array of 3D blocks of elements, wherein some of the elements in the 3D blocks have missing points. For each 3D block, attribute values for the 3D block are predicted based on the attribute values of neighboring 3D blocks, resulting in a 3D residual block. A 3D transform is applied to each 3D residual block using locations of occupied elements to produce transform coefficients, wherein the transform coefficients have a magnitude and sign. The transform coefficients are entropy encoded according the magnitudes and sign bits to produce a bitstream.

公开(公告)号：US20190116372A1

公开(公告)日：2019-04-18

申请号：US15916497

申请日：2018-03-09

Applicant: Mitsubishi Electric Research Laboratories, Inc.

Inventor： Robert Cohen ,  Dong Tian ,  Hideaki Ochimizu ,  Anthony Vetro

IPC: H04N19/44 ,  G06T7/11 ,  H04N19/88 ,  H04N19/176

Abstract: Systems and methods for a point cloud decoder including a processor to decode each block in a set of blocks from a point cloud, so as to obtain a decoded point cloud. Wherein each block includes a set of points, such that for each block the processor is to decode a set of prediction residuals from a compressed bitstream. Use a predetermined location in the block, and compute for each prediction residual in the set of prediction residuals, a position of a point by adding the prediction residual to the predetermined location, so as to obtain a set of decoded points for the block. Wherein the decoded points for the blocks in the set of blocks represent the decoded point cloud.

公开(公告)号：US20180053324A1

公开(公告)日：2018-02-22

申请号：US15241112

申请日：2016-08-19

Applicant: Mitsubishi Electric Research Laboratories, Inc.

Inventor： Robert Cohen ,  Maja Krivokuca ,  Anthony Vetro ,  Chen Feng ,  Yuichi Taguchi

IPC: G06T9/00 ,  G06T17/10

CPC classification number: G06T9/001 ,  G06T9/004 ,  G06T9/005 ,  G06T9/007 ,  G06T17/10 ,  G06T2200/04

Abstract: A method for encoding a point cloud representing a scene using an encoder including a processor in communication with a memory includes steps of fitting a parameterized surface onto the point cloud having input points representing locations in a three-dimensional space, generating model parameters from the parameterized surface, computing corresponding points from the parameterized surface, wherein the corresponding points correspond to the input points, computing residual data based on the corresponding points and the input points of the point cloud, compressing the model parameters and residual data to yield coded model parameters and coded residual data, respectively, and producing a bit-stream from the coded model parameters of the parameterized surface and the coded residual data.

公开(公告)号：US20150382016A1

公开(公告)日：2015-12-31

申请号：US14575004

申请日：2014-12-18

Applicant: Mitsubishi Electric Research Laboratories, Inc.

Inventor： Robert Cohen ,  Xingyu Zhang ,  Anthony Vetro

IPC: H04N19/593 ,  H04N19/61 ,  H04N19/55 ,  H04N19/174 ,  H04N19/117

CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/117 ,  H04N19/136 ,  H04N19/174 ,  H04N19/186 ,  H04N19/55 ,  H04N19/61 ,  H04N19/70 ,  H04N19/86

Abstract: A method decodes a picture in a form of a bitstream, wherein the picture includes components, by first receiving the bitstream in a decoder. The decoder includes an intra boundary filtering process. A flag is decoded from the bitstream. Then, the intra boundary filtering process is applied, according to the flag.

Abstract translation: 一种方法是以比特流的形式解码图像，其中通过首先在解码器中接收比特流，其中图像包括分量。 解码器包括边界内滤波处理。 从比特流解码标志。 然后，根据标志应用边界内过滤处理。