Sk Telecom Company, Ltd.

Jeonghoon Seo

Byeungwoo Jeon

Joohee Moon

Haekwang Kim

Yunglyul Lee

Jeongyeon Lim

Sunyeon Kim

Sungwook Hong

Kioh Kim

Jongki Han

Daeyeon Kim

Gyumin Lee

Jaehoon Choi

A video decoding apparatus includes a decoder to decode division information related to dividing a current block into subblocks, and reconstruct transform coefficients of each of the subblocks identified by the division information, and thereby generate transformed residual subblocks; an inverse transformer to inverse-transform each of the transformed residual subblocks, and thereby generate residual subblocks; a predictor to generate predicted subblocks by intra-predicting each of the subblocks; an adder to reconstruct the current block by adding the predicted subblocks to the residual subblocks corresponding thereto; and a first filter to perform deblocking-filtering on boundaries between the subblocks in a reconstructed picture including the reconstructed current block.

Encoding/decoding method and device for high-resolution moving images

A video encoding method includes: determining a size of a current block to be encoded and encoding information for indicating the size of the current block; encoding division information related to dividing the current block into one or more subblocks; predicting a subblock divided from the current block by using an intra prediction mode corresponding to the subblock; generating a residual block by subtracting the predicted block from the subblock; transforming the residual subblock by using a transform size identical to a size of the subblock; and encoding information on transform coefficients of the transformed residual subblock.

The present disclosure relates to an inter prediction method and apparatus using adjacent pixels, and a video encoding method and apparatus using the same. The inter prediction method for a predictive encoding includes: determining a current motion vector by estimating a motion of a current block; generating a reference block indicated by the current motion vector; calculating a motion compensation coefficient or an average compensation coefficient by using pixels neighboring the current block and pixels neighboring reference block; generating a changed reference block reflecting the motion compensation coefficient or the average compensation coefficient in the reference block; and determining the changed reference block as a predicted block of the current block. The present disclosure reduces a difference between an actual block and a predicted block by more accurately predicting the block to be encoded, thereby improving the compression efficiency.

Inter prediction method and apparatus using adjacent pixels, and image encoding/decoding method and apparatus using same

The present disclosure provides a video encoding apparatus and method and a video decoding apparatus and method. The video encoding apparatus, includes: a block mode determiner for determining a block mode of a current block; an NCI block intra encoder responsive if the block mode of the current block determined by the block mode determiner is an intra mode and neighboring blocks of the current block include an NCI block, for encoding the NCI block through an intra prediction of the NCI block; and a current block intra encoder responsive if the block mode of the current block determined by the block mode determiner is the intra mode and the neighboring blocks of the current block include the NCI block, for encoding the current block through an intra prediction of the current block.

Video coding device, video coding method thereof, video decoding device, and video decoding method thereof

Disclosed is a high-resolution video encoding/decoding method and apparatus. The video encoding method includes: predicting a current block to generate a predicted block, subtracting the predicted block from the current block to generate a residual block, determining a transform and quantization type according to the block type of the current block; transforming and quantizing the residual block according to the determined transform and quantization type; and encoding the transformed and quantized residual block. According to the video encoding/decoding method and apparatus, not only the encoding efficiency can be improved because it enables an encoding using a high correlation between temporally/spatially adjacent pixels appearing in a video, but the compression efficiency can also be improved by reducing block distortion.

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Seoul, South Korea

Jeonghoon Seo