Dynamic analysis system and method for sign photometric performance

An analysis system and marking technology, which is applied in the direction of testing optical performance, etc., can solve problems such as potential safety hazards, low efficiency, and potential safety hazards for personnel, and achieve clear collection, avoid manual calculation and analysis, and improve analysis efficiency and accuracy.

CN102998092AInactive Publication Date: 2013-03-27RES INST OF HIGHWAY MINIST OF TRANSPORT +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2013-03-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides dynamic analysis system and method for sign photometric performance. The dynamic analysis system for sign photometric performance comprises a system calibrating module, a spatial data acquisition module, a sign image acquisition module, a position and orientation integrated module, a geographic reference processing module, a sign photometric performance analysis module and a multi-source data mapping module. A sign image acquisition device is installed on a carrier for image acquisition, and sign images can be acquired quickly and vividly. The acquired sign images are automatically subjected to photometric performance calculation by image analysis, manual computation and analysis are avoided, and analysis efficiency and accuracy are improved.
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Description

technical field

[0001] The invention relates to a road traffic analysis system and a method thereof, in particular to a dynamic analysis system and a method for the photometric performance of signs. Background technique

[0002] At present, there are no methods and products on the market that can dynamically test and analyze the photometric performance of signs, and the photometric performance of signs is an important test item in the maintenance and management of road traffic signs, and its performance is directly related to the visibility of signs when drivers are driving on the road At present, it is generally used by inspectors to use hand-held instruments to touch the surface of the sign board through the lift car for testing. Low, there is a problem of personnel safety hazards. Contents of the invention

[0003] The invention provides a dynamic analysis system and method for detecting and analyzing the photometric performance of road traffic signs.

[0004] Realize...

Examples

Embodiment Construction

[0024] Such as figure 1 Shown, a kind of dynamic analysis system of marking photometric performance of the present invention comprises:

[0025] A system calibration module: the measurement parameters of the calibration system are mainly the internal parameters (principal point, principal distance, distortion coefficient) and external parameters (position relative to the center of GPS and attitude relative to IMU) of the area array camera;

[0026] A spatial data acquisition module: collect GPS, IMU and mileage data;

[0027] A sign image acquisition module: collect data from two black-and-white near-infrared area array cameras, and the data format is a large file format;

[0028] A positioning and attitude determination integration module: import GPS, IMU and mileage data to generate the vehicle body running position (plane and elevation coordinates) and attitude data (heading angle, pitch angle, roll angle);

[0029] A geographic reference processing module: generate geogr...