Visual measuring system based on self-adapting targets and calibrating method thereof

A calibration method and visual measurement technology, which are applied in the application field of computer vision technology, can solve the problems of increasing the operational complexity of the calibration process, adverse effects of calibration accuracy, and a small number of marking points, and achieve high reliability, simple production and low cost. Effect
CN102175261AActive Publication Date: 2011-09-07SHENZHEN ESUN DISPLAY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENZHEN ESUN DISPLAY
Publication Date
2011-09-07

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Abstract

The invention provides a visual measuring system based on self-adapting targets and a calibration method thereof, wherein the system and method provided by the invention are applicable to the technical field of computer vision. In the embodiment of the invention, the targets are constructed based on the samples of the to-be-detected workpieces by sticking a code mark on the surface of the workpiece, so that the manufacturing is simple without mechanical processing. Digital cameras and scales are used for regulating the target and can be recycled for regulating a plurality of targets, so that the cost is low. The cameras in the system ensure that the targets can be seen during a measuring process, so the cameras in the system can be calibrated simultaneously; and the calibration error is not delivered and accumulated, so that the calibration precision is high. The targets can be directly moved and placed by a mechanical device in a production line; and the method is especially applicable to online calibration.
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Description

Technical field

[0001] The invention belongs to the application field of computer vision technology, and particularly relates to a vision measurement system based on an adaptive target and a calibration method thereof. Background technique

[0002] The structured light-based visual measurement system has the advantages of non-contact, fast speed, high accuracy, and high data density. It has a wide range of applications in industrial production fields such as reverse engineering, quality control, and defect detection. For the vision measurement system, system calibration is the main factor that affects the measurement accuracy, and precise system calibration ensures the measurement accuracy of the system to a large extent.

[0003] In the vision measurement system, the camera is the basic unit of the system. System calibration is the process of determining the internal parameters of each camera in the system and determining the positional relationship (structural parameters) betwee...

Claims

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