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Vehicle monitoring method, specific character pattern recognition device, and vehicle monitoring system

A technology of specific characters and recognition devices, which is applied in the field of vehicle monitoring systems, can solve problems such as low bit rate and difficulties, and achieve the effect of reducing the amount of sent data, increasing the possibility, and reducing the amount of sent data

Inactive Publication Date: 2006-07-26
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to connect central and distributed image processing units to perform vehicle monitoring remotely through existing communication networks with low bit rates

Method used

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  • Vehicle monitoring method, specific character pattern recognition device, and vehicle monitoring system
  • Vehicle monitoring method, specific character pattern recognition device, and vehicle monitoring system
  • Vehicle monitoring method, specific character pattern recognition device, and vehicle monitoring system

Examples

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Embodiment Construction

[0036] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0037] figure 1 A schematic configuration of a vehicle monitoring system in a preferred embodiment of the present invention is shown.

[0038] exist figure 1 Among them, reference numeral 1 denotes a center, 2 denotes a control processing unit, 3 denotes a display unit, 4 denotes a data management table, 5 denotes a switching network (network), 6 denotes a communication line such as a telephone line, 7 denotes an identification device, 8 denotes a camera, And 9 represents a vehicle. When the connection between the center 1 and the identification device 7 is established via the telephone line 6 accommodated in the switching network 5, a figure 1 The vehicle monitoring system shown in. A plurality of identification devices 7 constituting part of the vehicle monitoring system may be distributed in expressways, common roads or parking lots, and each iden...

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PUM

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Abstract

In a vehicle monitoring method, recognition processing of a specific character pattern of a vehicle is performed by extracting a specific character pattern area from a taken image data. When the specific character pattern cannot be recognized, a compression range is judged as being a vehicle area clipped from the taken image data, and image data of the clipped area is compressed at a low compression ratio. When the specific character pattern is partially recognized, the compression range is judged as being the specific character pattern area clipped from the taken image data, and image data of the clipped area is compressed at the low compression ratio. When the specific character pattern is fully recognized, the compression range is judged as being the specific character pattern area clipped from the taken image data, and image data of the clipped area is compressed at a high compression ratio.

Description

technical field [0001] The present invention relates to a vehicle monitoring method, a specific character pattern recognition device, and a vehicle monitoring system in which the specific character pattern of a vehicle is recognized and monitored. Background technique [0002] Specific character patterns are respectively provided to various vehicles so that the patterns do not overlap. Therefore, automatic reading of the specific character pattern can be performed to recognize the specific character pattern of the vehicle. [0003] Various systems have been proposed which are applicable to automation of toll payment at tollbooths on toll roads, judgment of whether a car parked in a parking lot is the contractor's own car, detection of stolen cars, and the like. In these systems, image signals representing images of vehicle-specific character patterns must be processed. These systems are required to efficiently perform image processing of image signals. [0004] FIG. 7 sho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/017G06T1/00H04N7/18
CPCG08G1/0104G06V10/40H04N7/18G08G1/0175G06V30/141
Inventor 菅野肇
Owner FUJITSU LTD
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