Industrial Technology Research Institute

Jih-Sheng Tu

Chun-Lung Lin

Ching-Chieh Lin

Yao-Jen Chang

Chao-Hsiung Hung

Jung-Yang Kao

Yao-jen Chang

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.

Encoding method, decoding method, encoding/decoding system, encoder, and decoder

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.

Video encoding methods and systems using adaptive color transform

A method of encoding or decoding coding units of a video content in a palette coding mode using an adaptive palette predictor is provided. The method includes adaptively determining a maximum size of the adaptive palette predictor based on at least one of a complexity of the video content and coding quality of the video content; and encoding or decoding the coding units of the video content in the palette coding mode using the adaptive palette predictor while limiting the adaptive palette predictor that is derived from all palette(s) of previously encoded or decoded coding unit(s) of the video content within the maximum size determined in the adaptively determining step. An apparatus of encoding or decoding coding units of a video content in a palette coding mode using an adaptive palette predictor is also provided.

Method and apparatus of encoding or decoding coding units of a video content in a palette coding mode using an adaptive palette predictor

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.

Encoding method and encoder for constructing an initial color table

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 2major 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 2extended colors with each of the possible values of the M binary bit sequence representing an unique extended color index of M extended color indices.

Method of color palette coding applicable to electronic device and electronic device using the same

A depth map aligning method and a system are provided. The depth map aligning method includes the following steps. A view warping is performed to a left-view image and a right-view image of a real-view image according to a corresponding depth map to obtain a right-virtual view image, a left hole information, and a right hole information thereof. A residual difference of pixel, which is not a hole, is obtained by pixel to pixel. If the residual difference of the pixel is larger than a first threshold value, a reverse warping is performed to obtain a coordinate of the pixel. The depth value of the pixel is aligned according to the depth value of one or more pixels in a vicinity of the obtained coordinate.

Depth map aligning method and system

A video search method and an apparatus thereof are provided. In the video search method, the bit streams of a query video file and a plurality of video files to be searched are parsed to obtain a plurality of corresponding motion vectors (MVs). A plurality of corresponding MV maps is constructed in a time domain according to the MVs. Correlations are obtained according to the MV map corresponding to the query video file and the MV maps corresponding to the video files, and a video search result is obtained according to the correlations.

Video search method using motion vectors and apparatus thereof

A video search method including following steps is provided. Meta-data of a query clip is received, wherein the meta-data includes an index tag and a semantic pattern. One or more candidate clips are retrieved from at least one video database according to the index tag. The semantic pattern is compared with a semantic pattern of each of the candidate clips, and each of the candidate clips is marked as a returnable video clip or a non-returnable video clip according to a comparison result. The candidate clips marked as the returnable video clip are served as a query result matching the query clip. A video search system and a method for establishing a video database are also provided.

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Yilan County, Taiwan

Jih-Sheng Tu