公开(公告)号：US10187639B2

公开(公告)日：2019-01-22

申请号：US14733976

申请日：2015-06-09

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：US20180131949A1

公开(公告)日：2018-05-10

申请号：US15866493

申请日：2018-01-10

Applicant: Industrial Technology Research Institute

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

IPC: H04N19/186 ,  H04N19/93 ,  H04N19/463 ,  H04N19/593 ,  H04N19/176 ,  H04N19/174 ,  H04N19/44 ,  H04N19/70

CPC classification number: H04N19/186 ,  H04N19/174 ,  H04N19/176 ,  H04N19/44 ,  H04N19/463 ,  H04N19/593 ,  H04N19/70 ,  H04N19/93

Abstract: An encoding method and an encoder are provided. The encoding method includes receiving a first coding unit of a frame, and selecting a first index pixel and a second index pixel from pixels of the frame and setting index values corresponding to the two index pixels, where a color of the first index pixel is different to a color of the second index pixel. The encoding method includes indexing each pixel in the first coding unit to generate an index map. The encoding method includes generating a coding value corresponding to the first coding unit according to the index map, and transmitting the coding value to a decoder, wherein only an index value corresponding to a 1st scanned pixel in the pixels of the first coding unit in the index map is recorded in the coding value.

公开(公告)号：US20180103251A1

公开(公告)日：2018-04-12

申请号：US15725300

申请日：2017-10-05

Applicant: Industrial Technology Research Institute

Inventor： Chun-Lung Lin ,  Ching-Chieh Lin ,  Po-Han Lin

IPC: H04N19/103 ,  H04N19/61 ,  H04N19/147

CPC classification number: H04N19/103 ,  H04N19/11 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/61

Abstract: A method for selecting a prediction mode of an intra prediction, a video encoding device and an image processing apparatus are provided. The method includes following steps. Multiple prediction costs corresponding to multiple prediction modes of the intra prediction are calculated according to a block of an input image in case that a transform unit transforms according to a default transform index. Multiple candidate prediction modes are selected from the prediction modes based on the prediction costs corresponding to the prediction modes. Multiple distortion costs corresponding to the candidate prediction modes under a plurality of transform indexes are calculated based on the block and the prediction costs corresponding to the candidate prediction modes. And, one of the candidate prediction modes is selected according to the distortion costs to serve as a prediction mode to be used of the intra prediction corresponding to the block.

公开(公告)号：US09892338B2

公开(公告)日：2018-02-13

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: G06K9/36 ,  G06K9/46 ,  G06K9/62 ,  H04N1/64 ,  H04N19/593 ,  H04N19/93

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.

公开(公告)号：US20160360205A1

公开(公告)日：2016-12-08

申请号：US14757556

申请日：2015-12-24

Applicant: Industrial Technology Research Institute

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

IPC: H04N19/136 ,  H04N19/61 ,  H04N19/186 ,  H04N19/96

CPC classification number: H04N19/136 ,  H04N19/102 ,  H04N19/124 ,  H04N19/134 ,  H04N19/15 ,  H04N19/154 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/46 ,  H04N19/593 ,  H04N19/61 ,  H04N19/96

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, determining a correlation between components of the coding unit, enabling or disabling a coding mode of the coding unit, determining whether to evaluate a size of a transform unit for an 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.

Abstract translation: 一种视频编码方法，包括接收源视频帧，将源视频帧划分为编码树单元，从编码树单元确定编码单元，确定编码单元的分量之间的相关性，启用或禁用编码单元的编码模式 编码单元，确定是否对使能编码模式的变换单元的尺寸进行评估，以及确定用于所述编码模式的编码单元的变换单元，其中，所述编码单元的大小由数量（N） 样品。

公开(公告)号：US20160100178A1

公开(公告)日：2016-04-07

申请号：US14875697

申请日：2015-10-06

Applicant: Industrial Technology Research Institute

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

IPC: H04N19/186

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.

Abstract translation: 本公开涉及一种调色板编码方法和使用相同方法的电子设备。 所提出的方法将不限于通过使用处理器来编码比特流来表示编码单元的颜色并将比特流存储在存储介质中或发送比特流。 比特流将不限于表示运行标志的二进制位，在编码单元中表示多达2N个主色的N个二进制位序列，其中N个二进制位序列的每个可能值表示独特的主要颜色指数 N个主色指数，以及表示2M个扩展颜色的M个二进制位序列，其中M个二进制位序列的每个可能值表示M个扩展颜色索引的唯一扩展颜色索引。

公开(公告)号：US20150365685A1

公开(公告)日：2015-12-17

申请号：US14736275

申请日：2015-06-11

Applicant: Industrial Technology Research Institute

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

IPC: H04N19/186 ,  H04N19/174 ,  H04N19/44

CPC classification number: H04N19/186 ,  H04N19/174 ,  H04N19/176 ,  H04N19/44 ,  H04N19/463 ,  H04N19/593 ,  H04N19/70 ,  H04N19/93

Abstract: An encoding method and a decoding method, and a codec system, an encoder and a decoder using the methods are provided. The encoding method includes receiving a first coding unit of a frame, and selecting a first index pixel and a second index pixel from pixels of the frame and setting index values corresponding to the two index pixels, where a color of the first index pixel is different to a color of the second index pixel. The encoding method includes indexing each pixel in the first coding unit to generate an index map. The encoding method includes generating a coding value corresponding to the first coding unit according to the index map, and transmitting the coding value to a decoder, wherein only an index value corresponding to a 1st scanned pixel in the pixels of the first coding unit in the index map is recorded in the coding value.

Abstract translation: 提供了一种编码方法和解码方法，以及使用这些方法的编解码器系统，编码器和解码器。 编码方法包括：接收帧的第一编码单元，并从帧的像素中选择第一索引像素和第二索引像素，并且对应于两个索引像素的设置索引值，其中第一索引像素的颜色不同 到第二索引像素的颜色。 编码方法包括索引第一编码单元中的每个像素以生成索引图。 该编码方法包括根据索引映射生成与第一编码单元相对应的编码值，并将该编码值发送给解码器，其中，仅对应于第一编码单元的像素中的第一扫描像素的索引值 索引图记录在编码值中。