公开(公告)号：US20210256823A1

公开(公告)日：2021-08-19

申请号：US17020893

申请日：2020-09-15

Applicant: Hitachi, Ltd.

Inventor： Yoshiki ITO ,  Kenichi MORITA ,  Tomokazu MURAKAMI ,  Junichi KIMURA ,  Keisuke TERADA

IPC: G08B13/196 ,  G06T7/73 ,  G06K9/00

Abstract: An efficient alert process is realized and effectiveness of surveillance is improved when surveilling various incidents that occur within a surveillance area. In a video surveillance system for detecting a plurality of incidents in a surveillance area using a video that captured the surveillance area, provided are a calculation unit which detects an image of a person and/or an object from the video, and calculates an incident feature quantity as a feature quantity representing a status of a detected person and/or a feature quantity of a detected object, and a determination unit which detects an occurrence of the incident based on the incident feature quantity, and determines subjects to be alerted of an occurred incident, which is a detected incident, from a type of the occurred incident and a determination accuracy of the occurred incident.

公开(公告)号：US20210326596A1

公开(公告)日：2021-10-21

申请号：US17200135

申请日：2021-03-12

Applicant: HITACHI, LTD.

Inventor： Kenichi MORITA ,  Yoshiki ITO

IPC: G06K9/00 ,  G06K9/62

Abstract: An event analysis system capable of appropriately estimating a specific event is provided. Provided are an estimation unit that estimates a track of a person based on video data acquired by a camera, a determination unit that determines, based on determination information for determining a specific event, whether or not the track estimated by the estimation unit corresponds to the specific event, a filter unit that removes, based on normal event information for identifying a normal event, the normal event from the events that have been determined by the determination unit to correspond to the specific event, and an output unit that outputs information indicating that the event is occurring after the normal event has been removed by the filter unit.

公开(公告)号：US20180373737A1

公开(公告)日：2018-12-27

申请号：US16062308

申请日：2015-12-17

Applicant: HITACHI, LTD.

Inventor： Yuki WATANABE ,  Kenichi MORITA ,  Atsushi HIROIKE

IPC: G06F17/30 ,  G06K9/00 ,  G06K9/52

Abstract: An image processing device includes a processor, a storage unit coupled to the processor and storing an image database, and a display unit coupled to the processor. The processor obtains arrangement information of a first object on the display unit when the processor accepts an input of the first object via the display unit. The processor obtains first co-occurrence information using the first object and the arrangement information of the first object. The first co-occurrence information indicates a correlation relationship with the first object based on the image database. The processor outputs a candidate for a second object based on the first co-occurrence information to the display unit.

公开(公告)号：US20190251471A1

公开(公告)日：2019-08-15

申请号：US16308328

申请日：2016-11-01

Applicant: HITACHI, LTD.

Inventor： Kenichi MORITA ,  Yuki WATANABE ,  Atsushi HIROIKE ,  Yoshitaka MURATA ,  Tsutomu IMADA

IPC: G06N20/00 ,  G06F16/55 ,  G06F16/583

CPC classification number: G06N20/00 ,  G06F16/55 ,  G06F16/583 ,  G06T7/00

Abstract: An object is to provide a machine learning device that can reliably and promptly improve image classification accuracy. A machine learning device of the present invention includes: an image database that stores a plurality of images and image features of these images; and a processor that is connected to this image database and that performs machine learning using the plurality of images and the image features stored in the image database, and the processor preferentially selects a predetermined number of images that are images other than images used in past machine learning and that have the low similarities to the images used in the past machine learning, as images used for machine learning from among the images stored in the image database, and performs new machine learning using the selected images.

公开(公告)号：US20190147292A1

公开(公告)日：2019-05-16

申请号：US16171710

申请日：2018-10-26

Applicant: Hitachi, Ltd.

Inventor： Yuki WATANABE ,  Kenichi MORITA ,  Tomokazu MURAKAMI ,  Atsushi HIROIKE ,  Quan KONG

IPC: G06K9/62 ,  G06T7/70 ,  G06K9/46 ,  G06K9/00 ,  G06F17/30

Abstract: An image retrieving apparatus includes a pose estimating unit which recognizes pose information of a retrieval target including a plurality of feature points from an input image, a features extracting unit which extracts features from the pose information and the input image, an image database which accumulates the features in association with the input image, a query generating unit which generates a retrieval query from pose information specified by a user, and an image retrieving unit which retrieves images including similar poses according to the retrieval query from the image database.