公开(公告)号：US20240062506A1

公开(公告)日：2024-02-22

申请号：US18265881

申请日：2020-12-09

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroyuki UZAWA ,  Saki HATTA ,  Shuhei YOSHIDA ,  Daisuke KOBAYASHI ,  Yuya OMORI ,  Ken NAKAMURA ,  Koyo NITTA

IPC: G06V10/26 ,  G06T3/40 ,  G06V10/22

CPC classification number: G06V10/267 ,  G06T3/40 ,  G06V10/225 ,  G06V10/273 ,  G06V2201/10

Abstract: An object detection device 10 includes an entire processing unit 110 that obtains first metadata for the entire input image by scaling the input image and performing object detection processing, a divided image narrowing unit 120 that narrows down the input image into a predetermined number of selected divided images from a group of divided images obtained by dividing the input image, a division processing unit 130 that obtains second metadata by performing object detection processing for each of the selected divided images, and a synthesis processing unit 140 that removes the second metadata obtained by the division processing unit 130 that overlaps the first metadata obtained by the entire processing unit 110, and synthesizes the first metadata not removed and the first meta data obtained by the entire processing unit 110 to output the meta data.

公开(公告)号：US20240119605A1

公开(公告)日：2024-04-11

申请号：US18275786

申请日：2021-02-09

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Ken NAKAMURA ,  Hiroyuki UZAWA ,  Daisuke KOBAYASHI ,  Saki HATTA ,  Yuya OMORI ,  Shuhei YOSHIDA

IPC: G06T7/215 ,  G06T7/246 ,  G06V10/82 ,  G06V20/40

CPC classification number: G06T7/215 ,  G06T7/248 ,  G06V10/82 ,  G06V20/46 ,  G06T2207/10016 ,  G06T2207/20084

Abstract: A calculation unit (22) sets each frame, of a moving image including a plurality of frames, as a target frame, calculates a motion vector with reference to a reference frame over an entirety of the target frames, and calculates an index indicating a magnitude of change between a key frame and the target frame, which is represented by using the motion vector, a judgement unit (25) judges whether or not the calculated index is equal to or greater than a predetermined threshold value, a first detection unit (27) detects a region indicating an object from the target frame by using an object detection model in a case in which the index is equal to greater than the threshold value, a second detection unit (28) detects a region on the target frame, which is obtained by correcting a position of a region detected in the reference frame by using the motion vector in a case in which the index is less than the threshold value, and an output unit (30) outputs information of the region detected by the first detection unit (27) and information of the region detected by the second detection unit (28).

公开(公告)号：US20240114130A1

公开(公告)日：2024-04-04

申请号：US18277066

申请日：2021-02-16

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Daisuke KOBAYASHI ,  Ken NAKAMURA ,  Koyo NITTA ,  Yuya OMORI

IPC: H04N19/11 ,  H04N19/119 ,  H04N19/176 ,  H04N19/593

CPC classification number: H04N19/11 ,  H04N19/119 ,  H04N19/176 ,  H04N19/593

Abstract: A video coding method is a video coding method for coding an image in units of blocks obtained by dividing an image, and in the method a computer performs processing for dividing the image into blocks, acquiring an intra-image prediction mode predicted for each block, and generating, by using a combination pattern based on the intra-image prediction mode of a plurality of blocks adjacent to at least any one block, determining whether or not the plurality of blocks are to be combined, and performing prediction for each combined block when it is determined that the plurality of blocks are to be combined.

公开(公告)号：US20230353808A1

公开(公告)日：2023-11-02

申请号：US17785021

申请日：2019-12-16

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Daisuke KOBAYASHI ,  Ken NAKAMURA ,  Kazuhisa YAMAGISHI ,  Taichi KAWANO

IPC: H04N21/2662 ,  H04N21/2343 ,  H04N21/24

CPC classification number: H04N21/2662 ,  H04N21/2343 ,  H04N21/2407

Abstract: A coded data generation method of generating coded data of a plurality of bit rates in which an image is encoded includes the steps of: acquiring an evaluated value at distribution destinations of the generated coded data when the coded data is reproduced; and changing the bit rate of the coded data to be generated based on a distribution of the acquired evaluated value in all channels.