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Alexander Jay Converse
Researcher at Google
Publications - 5
Citations - 105
Alexander Jay Converse is an academic researcher from Google. The author has contributed to research in topics: Codec & Finite-state machine. The author has an hindex of 3, co-authored 5 publications receiving 98 citations.
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Patent
Continuous prediction domain
TL;DR: In this paper, a method for encoding a spherical video is disclosed, which includes mapping a frame of the spherical video to a two-dimensional representation based on a projection, and in a prediction process the method includes determine whether at least one block associated with a prediction scheme is on a boundary of the two dimensional representation.
Proceedings ArticleDOI
An overview of new video coding tools under consideration for VP10: the successor to VP9
Debargha Mukherjee,Hui Su,James Bankoski,Alexander Jay Converse,Jingning Han,Zoe Liu,Yaowu Xu +6 more
TL;DR: A set of new experimental coding tools have already been added to baseline VP9 to achieve modest coding gains over a large enough test set, and this paper provides a technical overview of these coding tools.
Proceedings ArticleDOI
Intra Block Copy for Screen Content in the Emerging AV1 Video Codec
Jiahao Li,Hui Su,Alexander Jay Converse,Bin Li,Roger Zhou,Bruce Lin,Xu Jizheng,Yan Lu,Ruiqin Xiong +8 more
TL;DR: The technology of intra block copy in AV1 uses the hash matching method at the encoder side to efficiently search the predictor in the reconstructed regions of the current picture, and achieves 12.2% bitrate saving.
Patent
Mixed boolean-token ans coefficient coding
TL;DR: In this paper, the decoding of encoded transform coefficients of a current block includes initializing a decoder state of a state machine having Boolean and symbol ANS decoders, and each decoder performs state normalization when the ANS state is outside a valid state range, performs output computation to generate an output value for the binary flag/bit or token, and updates the state using the output value and a probability as inputs.
Patent
Bitrate selection for video streaming
TL;DR: In this article, a first bitrate for each of the video resolutions was identified based on the first bit rate point associated with the videos where a quality of the videos at a first video resolution that is upscaled to a second video resolution at bitrates below the 1 bitrate point.