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Woo-Jin Han
Researcher at Gachon University
Publications - 153
Citations - 12343
Woo-Jin Han is an academic researcher from Gachon University. The author has contributed to research in topics: Motion compensation & Motion estimation. The author has an hindex of 35, co-authored 153 publications receiving 10953 citations. Previous affiliations of Woo-Jin Han include Samsung.
Papers
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Patent
Method and apparatus for motion prediction using inverse motion transform
TL;DR: In this article, a method and apparatus for performing a motion prediction using an inverse motion transformation are provided, which includes generating a second motion vector by inverse-transforming a first motion vector of a second block in a lower layer.
Patent
Video encoding method and video encoding apparatus and video decoding method and video decoding apparatus, which perform deblocking filtering based on tree-structure encoding units
Woo-Jin Han,Elena Alshina,Min Jung-Hye,Alexander Alshin,Il-Koo Kim,Nikolay Shlyakhov,Tammy Lee,Sun-Il Lee,Min-Su Cheon,Jianle Chen,Vadim Seregin,Yoonmi Hong +11 more
TL;DR: In this article, a method for deblocking filtering on the filtering boundary of a video is proposed, which is based on at least one data unit from among a plurality of coding units that are hierarchically configured according to depths.
Patent
Image encoding/decoding method and apparatus
TL;DR: In this paper, an image encoding/decoding method and apparatus are provided, which assign a virtual motion vector to a block that is encoded in an intra prediction mode and generate a new prediction block that are a combination of a prediction block generated by motion compensation using the virtual motion vectors and another prediction block created by intra prediction.
Proceedings ArticleDOI
Interpolation filter design in HEVC and its coding efficiency - complexity analysis
Kemal Ugur,Alexander Alshin,Elena Alshina,Frank Bossen,Woo-Jin Han,Jeong-Hoon Park,Jani Lainema +6 more
TL;DR: Improvements include discrete cosine transform based filter coefficient design, utilizing longer filter taps for luma and chroma interpolation and using higher precision operations in the intermediate computations in the HEVC interpolation filter.
Patent
Video coding method and apparatus supporting independent parsing
Bae-Keun Lee,Woo-Jin Han +1 more
TL;DR: In this paper, an apparatus and method for independently parsing fine granular scalability (FGS) layers is provided for video-encoding, which includes a frame encoding unit which generates at least one quality layer from an input video frame, a coding-pass-selecting unit which selects a coding pass according to a coefficient of a reference block spatially neighboring a current block, and a pass-coding unit which losslessly codes the coefficient of the current block according to the selected coding pass.