公开(公告)号：US10944969B2

公开(公告)日：2021-03-09

申请号：US15822215

申请日：2017-11-27

Applicant: Industrial Technology Research Institute

Inventor： Yao-Jen Chang ,  Chun-Lung Lin ,  Ching-Chieh Lin ,  Jih-Sheng Tu ,  Chao-Hsiung Hung

IPC: H04N7/12 ,  H04N19/119 ,  H04N19/176 ,  H04N19/70 ,  H04N19/13 ,  H04N19/593 ,  H04N19/103 ,  H04N19/463 ,  H04N19/91 ,  H04N19/186 ,  H04N19/182 ,  H04N19/124 ,  H04N19/94

Abstract: An encoding, a decoding method, a system for encoding and decoding, an encoder, and a decoder are provided. The encoding method includes the following. In a palette mode, if colors of pixels of a coding unit block are all represented by one or more major colors of the coding unit block, a flag is set as a first state value, and if the color of at least one pixel of the coding unit block is not represented by the one or more major colors of the coding unit block, the flag is set as a second state value. The encoding method further includes establishing a palette table corresponding to the coding unit block according to a state value of the flag and the one or more major colors.

公开(公告)号：US20200294270A1

公开(公告)日：2020-09-17

申请号：US16699114

申请日：2019-11-29

Applicant: Industrial Technology Research Institute

Inventor： Sheng-Po Wang ,  Erh-Chung Ke ,  Yi-Ting Tsai ,  Chun-Lung Lin ,  Ching-Chieh Lin

IPC: G06T9/00 ,  G06T11/00

Abstract: A patch extension method, an encoder and a decoder are provided. The method includes: obtaining a point cloud including a plurality of points; obtaining a first patch according to the point cloud, wherein the first patch is a subset of the point cloud; for at least one sampling point in the first patch, obtaining at least one neighboring point in the point cloud less than a first threshold away from the sampling point; and adding the neighboring point to the first patch.

公开(公告)号：US20200013235A1

公开(公告)日：2020-01-09

申请号：US16502036

申请日：2019-07-03

Applicant: Industrial Technology Research Institute

Inventor： Yi-Ting Tsai ,  Chun-Lung Lin ,  Ching-Chieh Lin

IPC: G06T19/20 ,  G06T7/73 ,  G06K9/62

Abstract: A method and an apparatus for processing patches of a point cloud are provided. The apparatus includes an input/output (I/O) device, a storage device, and a processor. The I/O device is used to receive a bit stream of the point cloud. The storage device is configured to store an index table recording indexes corresponding to a plurality of orientations. The processor is coupled to the I/O device and the storage device and is configured to execute a program to demultiplex the bit stream of the point cloud into a patch image and indexes corresponding to a plurality of patches in the patch image, look up the index table obtain an orientation of each patch, transform the patch image according to the orientation to recover the plurality of patches of the point cloud, and reconstruct the point cloud by using the recovered patches.

公开(公告)号：US20180054623A1

公开(公告)日：2018-02-22

申请号：US15709490

申请日：2017-09-20

Applicant: Industrial Technology Research Institute

Inventor： Ching-Chieh Lin ,  Chun-Lung Lin ,  Yao-Jen Chang ,  Jih-Sheng Tu

IPC: H04N19/186 ,  H04N1/64 ,  H04N19/70 ,  H04N19/90

CPC classification number: H04N19/186 ,  H04N1/644 ,  H04N19/70 ,  H04N19/90

Abstract: The disclosure is directed to a method of color palette coding and an electronic device using the same method. The proposed method would include not limited to encoding, by using a processor, a bit stream to represent a color of a coding unit and storing the bit stream in a storage medium or transmitting the bit stream. The bit stream would include not limited to a binary bit representing a run flag, a N binary bit sequence representing up to 2N major colors in a coding unit with each of the possible values of the N binary bit sequence representing an unique major color index of N major color indices, and a M binary bit sequence representing up to 2M extended colors with each of the possible values of the M binary bit sequence representing an unique extended color index of M extended color indices.

公开(公告)号：US12192460B2

公开(公告)日：2025-01-07

申请号：US18460622

申请日：2023-09-04

Applicant: Industrial Technology Research Institute

Inventor： Yao-Jen Chang ,  Chun-Lung Lin ,  Ching-Chieh Lin ,  Jih-Sheng Tu ,  Chao-Hsiung Hung

IPC: H04N1/64 ,  H04N19/103 ,  H04N19/119 ,  H04N19/13 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/463 ,  H04N19/51 ,  H04N19/593 ,  H04N19/70 ,  H04N19/91 ,  H04N19/124 ,  H04N19/94

Abstract: An encoding, a decoding method, a system for encoding and decoding, an encoder, and a decoder are provided. The encoding method includes the following. In a palette mode, if colors of pixels of a coding unit block are all represented by one or more major colors of the coding unit block, a flag is set as a first state value, and if the color of at least one pixel of the coding unit block is not represented by the one or more major colors of the coding unit block, the flag is set as a second state value. The encoding method further includes establishing a palette table corresponding to the coding unit block according to a state value of the flag and the one or more major colors.

公开(公告)号：US20230005189A1

公开(公告)日：2023-01-05

申请号：US17857189

申请日：2022-07-05

Applicant: Industrial Technology Research Institute

Inventor： Jie-Ru Lin ,  Ching-Chieh Lin ,  Chun-Lung Lin ,  Sheng-Po Wang ,  Jih-Sheng Tu

IPC: G06T9/00

Abstract: A content patch encoding method and a content patch decoding method are provided. The content patch decoding method includes: receiving a bit stream, and obtaining multiple information corresponding to a point cloud patch and a mesh patch accordingly; obtaining a connectivity between multiple vertices of the mesh patch based on the bit stream; and reconstructing the point cloud patch and the mesh patch based on the information and the connectivity between the vertices.

公开(公告)号：US20210319592A1

公开(公告)日：2021-10-14

申请号：US17120267

申请日：2020-12-14

Applicant: Industrial Technology Research Institute

Inventor： Yi-Ting Tsai ,  Ching-Chieh Lin ,  Chun-Lung Lin

IPC: G06T9/00 ,  G06T17/20

Abstract: An electronic device and a method for encoding and decoding a point cloud are provided. The decoding method includes: encoded image data and syntax are received; the encoded image data is decoded to obtain image data, and a raw patch is obtained from the image data; and a residual point cloud in the point cloud is reconstructed according to the raw patch and the syntax.

公开(公告)号：US20200007862A1

公开(公告)日：2020-01-02

申请号：US16455765

申请日：2019-06-28

Applicant: Industrial Technology Research Institute

Inventor： Ching-Chieh Lin ,  Chun-Lung Lin

IPC: H04N19/117 ,  H04N19/159 ,  H04N19/132 ,  H04N19/105 ,  H04N19/70 ,  H04N19/176

Abstract: A method of adaptive filtering for multiple reference line of intra prediction in video coding, a video encoding apparatus and video decoding apparatus therewith are provided in the disclosure. In the method of intra prediction in video coding, a method of adaptive filtering is used to dynamically determine operation of filtering is applied to input samples in the intra prediction or not, which can reduce the complexity of the intra prediction in video coding if multiple reference lines are used for the operation of the intra prediction, and also increase the efficiency of compressing performance of ultra-high resolution video.

公开(公告)号：US10390020B2

公开(公告)日：2019-08-20

申请号：US15196108

申请日：2016-06-29

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Yao-Jen Chang ,  Chun-Lung Lin ,  Jih-Sheng Tu ,  Ching-Chieh Lin

IPC: H04N19/46 ,  H04N19/96 ,  H04N19/103 ,  H04N19/119 ,  H04N19/122 ,  H04N19/147 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593

Abstract: A video encoding method includes receiving a source video frame, dividing the source video frame into a coding tree unit, determining a coding unit from the coding tree unit, enabling or disabling a coding mode of the coding unit, determining, if the coding mode is enabled, whether to evaluate a size of a transform unit for the enabled coding mode, and determining a transform unit of the coding unit for the enabled coding mode, wherein the size of the coding unit is defined by a number (N) of samples.

公开(公告)号：US20160217341A1

公开(公告)日：2016-07-28

申请号：US14995186

申请日：2016-01-13

Applicant: Industrial Technology Research Institute

Inventor： Chao-Hsiung Hung ,  Chun-Lung Lin ,  Yao-Jen Chang ,  Ching-Chieh Lin ,  Jih-Sheng Tu

IPC: G06K9/46 ,  H04N1/64 ,  G06K9/62

CPC classification number: G06K9/4642 ,  G06K9/4652 ,  G06K9/6223 ,  H04N1/648 ,  H04N19/593 ,  H04N19/93

Abstract: In an embodiment, an encoding method includes generating a histogram corresponding to all pixels in a coding unit. The encoding method further includes seeking a first color value according to the histogram, wherein a first number of pixels of the first color value in the histogram is greater than or equals to a first threshold. The encoding method further includes seeking a second color value in a first range of the first color value according to the histogram. The encoding method further includes removing one or more pixels of the first color value from the histogram when a second number of pixels of the second color value is greater than or equals to a second threshold. The encoding method further includes adding the first color value into an initial color table when the second number of pixels is less than the second threshold. An encoder is also provided in the disclosure.

Abstract translation: 在实施例中，编码方法包括生成与编码单元中的所有像素对应的直方图。 编码方法还包括根据直方图寻找第一颜色值，其中直方图中的第一颜色值的​​第一数量的像素大于或等于第一阈值。 编码方法还包括根据直方图在第一颜色值的​​第一范围内寻找第二颜色值。 编码方法还包括当第二颜色值的第二数量的像素大于或等于第二阈值时，从直方图去除第一颜色值中的一个或多个像素。 编码方法还包括当第二数量的像素小于第二阈值时，将第一颜色值添加到初始颜色表中。 在本公开中还提供了编码器。