Image display system and image display method

Patent metadata

Field	Value
Publication number	US-11394885-B2
Application number	US-201716634783-A
Country	US
Kind code	B2
Filing date	Jul 31, 2017
Priority date	Jul 31, 2017
Publication date	Jul 19, 2022
Grant date	Jul 19, 2022

Abstract

A predetermined image processing is carried out on the images that have been taken by the cameras 101 through 108 attached to a side of the cars that form a train before the images are displayed on the monitor 301 that is mounted in the train. That is to say, as a first image processing, among the images to be displayed, a left-right inversion process is carried out on the images where the positional relationship between the cars and the platform in the image is opposite between left and right to the positional relationship as viewed in the direction in which the train is to travel. In addition, as a second image processing, a cutout process is carried out on the images to be displayed so that the cutout regions differ in accordance with the opening and closing state of the doors.

First claim

The invention claimed is:

1. An image display system that is mounted in a train formed of a plurality of connected cars, the system comprising:
a camera attached to a side of each car;
a monitor for displaying an image that has been taken by the camera; and
an image processing unit for processing an image to be displayed on the monitor, wherein the image processing unit:
among the images to be displayed on the monitor, carries out a left-right inversion process on the image where the positional relationship between the car and the platform in the image is opposite between the left and the right to the positional relationship as viewed in the direction in which the train is to travel, and
determines the images on which the left-right inversion process is to be carried out on the basis of the information that indicates the direction in which the train is to travel and the information that indicates the direction in which the image is taken by the camera.

2. The image display system according to claim 1 wherein
a plurality of cameras is attached to the same side of the same car, and
the monitor displays the images taken by the plurality of cameras on the same side of the same car in such a manner that the images are adjacent upwards and downwards or left to right.

3. An image display method for displaying an image that has been taken by a camera attached to a side of a car that forms a train on a monitor mounted in the train, wherein
among the images to be displayed on the monitor, a left-right inversion process is carried out on the image where the positional relationship between the car and the platform is opposite between the left and the right in the image to the positional relationship as viewed in the direction in which the train is to travel, and
the image after the left-right inversion process has been carried out thereon is displayed on the monitor, and
determining the images on which the left-right inversion process is to be carried out on the basis of the information that indicates the direction in which the train is to travel and the information that indicates the direction in which the image is taken by the camera.

Assignees

• Hitachi Int Electric Inc

Inventors

• Saito Ryuichi
• Yamamoto Yohei
• Funahashi Takahiro

Classifications

• H04N23/63 Primary

  by using electronic viewfinders · CPC title

• B61D19/026

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• B61L15/0072

  On-board train data handling · CPC title

• B61L25/04

  Indicating or recording train identities · CPC title

• B61K13/04

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