公开(公告)号：US20240331089A1

公开(公告)日：2024-10-03

申请号：US18599086

申请日：2024-03-07

Applicant: WASEDA UNIVERSITY

Inventor： Jiro KATTO ,  Shion KOMATSU ,  Heming SUN ,  Yutaka KATSUYAMA ,  Toshio SATO ,  Takuro SATO

IPC: G06T3/4053 ,  G06T7/20 ,  H04N5/14

CPC classification number: G06T3/4053 ,  G06T7/20 ,  H04N5/145

Abstract: A video super-resolution device includes a down-sampler, video super-resolvers, and a selecting/averaging unit. The down-sampler divides an input low-resolution video into a plurality of frame rates. The video super-resolvers are video super-resolvers trained at different frame rates, and perform super-resolution of the low-resolution video. The selecting/averaging unit selects a video super-resolver according to the magnitude of an optical flow obtained as a result of video super-resolution. Specifically, in a case where the optical flow has a value smaller than 0.5 pixels, the selecting/averaging unit makes selection such as not adopting a result of video super-resolution at a high frame rate. Finally, the selecting/averaging unit obtains a mean value of the selected video super-resolution result, and outputs a final high-resolution video.

公开(公告)号：US20240137298A1

公开(公告)日：2024-04-25

申请号：US18473531

申请日：2023-09-24

Applicant: WASEDA UNIVERSITY

Inventor： Yutaka KATSUYAMA ,  Toshio SATO ,  Kazuhiko TAMESUE ,  Takuro SATO ,  Jiro KATTO

IPC: H04L43/067 ,  H04L41/16 ,  H04L43/106

CPC classification number: H04L43/067 ,  H04L41/16 ,  H04L43/106

Abstract: A system for transmitting data via a network with a transmission latency includes: a transmitting device configured to sequentially transmit data; a data prediction device configured to predict future data after a lapse of a prediction time equivalent to a latency time on a transmission line of the network based on time-series data in a given period transmitted from the transmitting device, using a prescribed prediction method, and transmit the future data; and a receiving device configured to receive the future data.

公开(公告)号：US20240331846A1

公开(公告)日：2024-10-03

申请号：US18597923

申请日：2024-03-07

Applicant: WASEDA UNIVERSITY

Inventor： Jiro KATTO ,  Mayu ARAI ,  Kenji KANAI ,  Yutaka KATSUYAMA ,  Toshio SATO ,  Takuro SATO

IPC: G16H30/40 ,  G06T5/80

CPC classification number: G16H30/40 ,  G06T5/80 ,  G06T2207/10016 ,  G06T2207/20076 ,  G06T2207/30201

Abstract: A heart rate information concealed video transmission device includes a transmitter and a receiver. The transmitter compresses an input video and transmits the compressed video to a network, and the receiver decodes a received compressed stream, and attempts heart rate estimation by rPPG and generation of a biometric identifier. In order to invalidate heart rate estimation by a biological information processor, a corrected video generator outputs a corrected video in which small temporal variation of the input video is suppressed.

公开(公告)号：US20240235969A9

公开(公告)日：2024-07-11

申请号：US18473531

申请日：2023-09-25

Applicant: WASEDA UNIVERSITY

Inventor： Yutaka KATSUYAMA ,  Toshio SATO ,  Kazuhiko TAMESUE ,  Takuro SATO ,  Jiro KATTO

IPC: H04L43/067 ,  H04L41/16 ,  H04L43/106

CPC classification number: H04L43/067 ,  H04L41/16 ,  H04L43/106

Abstract: A system for transmitting data via a network with a transmission latency includes: a transmitting device configured to sequentially transmit data; a data prediction device configured to predict future data after a lapse of a prediction time equivalent to a latency time on a transmission line of the network based on time-series data in a given period transmitted from the transmitting device, using a prescribed prediction method, and transmit the future data; and a receiving device configured to receive the future data.