Sk Telecom Company, Ltd.

Yung Ho Choi

Jeongyeon Lim

Jinhan Song

Yoonsik Choe

Yonggoo Kim

Jinwoo Jeong

Sungjei Kim

Sang Jae Park

Ji Hong Kang

A video encoding/decoding method and apparatus using split prediction is provided. The video encoding/decoding method and apparatus using split prediction splits a block into various partition shapes in addition to a conventional standardized right-angled quadrangular shape so as to effectively predict an image of a current block from a previous image and thus, may more improve the performance of video data compression and may achieve superior reconstructed image quality.

Method and device for image encoding/decoding using block split prediction

The present disclosure provides an apparatus for encoding additional intra-information includes an intra prediction mode selecting unit for performing an intra prediction by applying at least one of one or more predetermined types of partitions and one or more prediction modes with respect to a coding unit, and for selecting at least one of a partition among the one or more types of partitions and a prediction mode among the one or more prediction modes; a partitioning and prediction mode table lookup unit for looking up a table, and for generating a table hit signal if the table has at least one of a partition corresponding to the selected partition and a prediction mode corresponding to the selected prediction mode; and an entropy encoding unit for performing an encoding based on the table, if the table hit signal is received.

Apparatus and method for encoding/decoding additional intra-information

A video encoding apparatus, a video decoding apparatus and method by using parallel intra-prediction by a coding unit-level are provided. The video encoding apparatus includes a left extrapolation pixel generating unit for generating left extrapolation pixels for a coding unit by using at least one of pixels of a top left block of the coding unit according to a direction of an intra-prediction mode with respect to the coding unit and leftmost original pixels of the coding unit; an intra-prediction encoding unit for predicting the coding unit by using neighboring pixels including the left extrapolation pixels to generate a first prediction block and encode the coding unit; and

Method and device for encoding and decoding by using parallel intraprediction by a coding unit

An intra prediction encoding apparatus includes: an optimal filter selecting unit for providing a plurality of extrapolation prediction filter candidates for filtering pixels adjacent to a current block to be encoded, with respect to each intra prediction direction or prediction mode of the current block, and selecting a filter having lowest encoding cost among the plurality of extrapolation prediction filter candidates; a residual signal generating unit for generating an extrapolation prediction value of the current block through the filter selected by the optimal filter selecting unit, and generating a residual signal by calculating a difference between a generated extrapolation prediction value of the current block and a pixel value of the current block; a transform and quantization unit for performing transform and quantization on the residual signal generated by the residual signal generating unit; and an entropy encoding unit for performing entropy encoding on a transformed and quantized residual signal.

Device and method for competition-based intra prediction encoding/decoding using multiple prediction filters

A video encoding/decoding method and apparatus that may omit a filtering mode is provided. The video encoding/decoding method and apparatus may determine whether to perform filtering on the intra-predicted image for the purpose of obtaining a natural intra-predicted image by using a characteristic of neighboring pixels or an intra-predicted image and thus, may omit additional information for indicating whether filtering is required and improves the performance of compression.

Method and device for encoding/ decoding image having removable filtering mode

The present disclosure relates to encoding and decoding apparatus and method using intra prediction. The encoding apparatus includes a reference pixel characteristics extractor for receiving reference pixel(s) included in neighboring blocks of a target block to encode to determine a reference pixel characteristic and determining whether adaptive filtering is applied to the reference pixel(s), based on reference pixel characteristic; a first intra predictor responsive to when the adaptive filtering is determined by the reference pixel characteristics extractor to be applied for comparing between results of performing intra prediction using high-frequency filtered reference pixel and intra prediction using high-frequency-unfiltered reference pixel to output the cost-efficient result along with filtering information indicating whether to perform filtering; and a second intra predictor for outputting the result of performing the intra prediction using the high-frequency-unfiltered reference pixel when the reference pixel characteristics extractor determines that the adaptive filtering is not to be applied.

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Gyeonggi-do, South Korea

Yung Ho Choi