公开(公告)号：US20220398868A1

公开(公告)日：2022-12-15

申请号：US17774113

申请日：2020-10-30

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Takashi HOSONO ,  Yongqing SUN ,  Kazuya HAYASE ,  Jun SHIMAMURA ,  Kiyohito SAWADA

IPC: G06V40/20 ,  G06V10/774 ,  G06V10/24 ,  G06V10/77

Abstract: The present invention makes it possible to cause an action recognizer capable of recognizing actions with high accuracy and with a small quantity of learning data to learn. An input unit 101 receives input of a learning video and an action label indicating an action of an object, a detection unit 102 detects a plurality of objects included in each frame image included in the learning video, a direction calculation unit 103 calculates a direction of a reference object, which is an object to be used as a reference among the plurality of detected objects, a normalization unit 104 normalizes the learning video so that a positional relationship between the reference object and another object becomes a predetermined relationship, and an optimization unit 106 optimizes parameters of an action recognizer to estimate the action of the object in the inputted video based on the action estimated by inputting the normalized learning video to the action recognizer and the action indicated by the action label.

公开(公告)号：US20220277592A1

公开(公告)日：2022-09-01

申请号：US17626073

申请日：2020-07-10

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Takashi HOSONO ,  Yongqing SUN ,  Jun SHIMAMURA ,  Atsushi SAGATA ,  Kiyohito SAWADA

IPC: G06V40/20 ,  G06V10/774 ,  G06T3/60 ,  G06T7/20 ,  G06V10/22 ,  G06T7/38

Abstract: An object is to accurately recognize an action of a subject. A direction alignment unit 24 is configured to perform at least one of rotation and inversion on an image based on an action direction of a desired subject in the image, so as to obtain an adjusted image. An action recognition device 26 is configured to recognize an action of the desired subject using the adjusted image as an input.