VIDEO DISPLAY SYSTEM, VIDEO DISPLAY METHOD, AND COMPUTER-READABLE MEDIUM

• US 20080131092A1
• Filed: 11/14/2007
• Published: 06/05/2008
• Est. Priority Date: 12/05/2006
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Takanezawa, Tetsuhiro
• Granted Patent: US 8,948,570 B2
• Time in Patent Office: Days
• US Class Current: 386/124
• CPC Class Codes: G08B 13/19669 Event triggers storage or change of storage policy
• CPC Class Codes: G08B 13/19671 Addition of non-video data, i.e. metadata, to video stream
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 7/188 Capturing isolated or intermittent images triggered by the occurrence of a predetermined event, e.g. an object reaching a predetermined position signal generation from motion picture films H04N5/253

Abstract

An image capturing system that records on a video recording unit a video captured by an image capturing apparatus and displays the video thus captured on a display unit comprises a change recording unit that records information of the time when, and the region where, a change of status occurs when the change detection unit detects such a change of status, and an extraction unit that extracts a partial region of video from the video thus recorded for displaying on the display unit. The extraction unit switches the video that is displayed on the display unit by extracting a video of the region of the change of status when the imaging time of the video that is displayed on the display unit reaches a time before a time prior to change that is preset, from the time when the change of status occurs.

Claims

1. A video displaying system adapted to display a video obtained from a camera apparatus on a terminal device, the system comprising:

a video recording unit adapted to record the video obtained from the camera apparatus and an imaging time of the camera apparatus;

a change recording unit adapted to record information on a time when a change of status occurs and a region of a change of status within the video obtained from the camera apparatus;

an extraction unit adapted to extract a video in the region of a change of status from the video recorded on the recording unit; and

a display unit adapted to display the video in the region of a change of status extracted from the recorded video on the terminal device, when the imaging time of the video played back on the terminal device reaches a preset time prior to change.

2. The system according to claim 1, wherein:

the extraction unit extracts, when a plurality of changes of status occur in a temporally overlapping fashion, the video of the plurality of the region of the change of status.

3. The system according to claim 2, wherein:

the extraction unit;

computes, when extracting the video of the plurality of the region of the change of status, a ratio of the area of a display region where the recorded video is played back and of an area of the region of the change of status contained within the display region, and determines whether or not the area ratio is within a predetermined range;

extracts the display region, if the area ratio is within the predetermined range; and

if the area ratio is not within the predetermined range, increases the display region, determines a combination of the region of the change of status wherein all of the regions of the change of status are included within any of the display regions, the respective area ratios thereof are within the predetermined range, and a number of the display regions is at a minimum, and extracts the display regions thereof.

4. The system according to claim 1, wherein:

the extraction unit, when a second change of status occurs in a different region after a first change of status terminates, extracts and displays a video between a time wherein a video of a display region that incorporates a first region of the change of status corresponding to the first change of status is displayed, and a time wherein a video of a display region that incorporates a second region of the change of status corresponding to the second change of status is displayed, over a path that links the display region that incorporates the first region of the change of status with the display region that incorporates the second region of the change of status.

5. A video display method adapted to extract and display a video of a partial region obtained from a camera apparatus on a display unit, the video display method comprising the steps of:

recording the video obtained from the camera apparatus, and an imaging time of the camera apparatus, on a video recording unit;

recording on a change recording unit, when a change of status is detected in a vicinity of the camera apparatus, information on a time when a change of status occurs and a region of the change of status within the video obtained from the camera apparatus;

extracting a video in the region of a change of status from the video recorded on the recording unit; and

displaying the video in the region of a change of status extracted from the recorded video on the terminal device, when the imaging time of the video played back on the terminal device reaches a preset time prior to change.

6. A terminal device for displaying a video obtained from a camera apparatus, comprising:

a reception unit adapted to receive a video recorded on a video recording unit; and

a processing unit adapted to process a display of the video in the region of a change of status extracted from the recorded video on the terminal device, when the imaging time of the video played back reaches a preset time prior to the change.

7. A computer-readable medium storing a program for causing a computer to execute a method of a terminal device for displaying a video obtained from a camera apparatus, the method comprising:

receiving a video recorded on a video recording unit; and

processing a display of the video in the region of a change of status extracted from the recorded video on the terminal device, when the imaging time of the video played back reaches a preset time prior to the change.