Accelerator optical distance ruler equipment, calibration method as well as generation method of optical distance ruler
A calibration method and accelerator technology, which is applied in the field of medical devices, can solve the problems of complex calibration process of optical distance ruler and low calibration accuracy of accelerator optical distance ruler, and achieve the effect of simple and convenient calibration process, convenient later maintenance and high calibration accuracy
Active Publication Date: 2019-08-20
SUZHOU LINATECH MEDICAL SCI & TECH CO LTD
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[0005] The purpose of the present invention is to provide an accelerator optical distance ruler device, a calibration method and a method for generating an optical distance ruler to solve the problem of the low calibration accuracy of the optical distance ruler on the accelerator and the calibration of the optical distance ruler. complex process issues
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[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0045] The structured light measurement method is to project a series of optical stripes (that is, the sequence pattern of the structured light mode) onto the object, and then use the camera to collect the information of the optical stripes to obtain the three-dimensional coordinates of the object. At present, the structured light measurement system has high precision in stereo measurement, which can fully meet the precision requirements of the optical...
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The invention provides accelerator optical distance ruler equipment, a calibration method as well as a generation method of an optical distance ruler, and relates to the technical field of medical apparatuses and instruments. The accelerator optical distance ruler equipment comprises a projector, a camera, an optical distance ruler calibration plate and an optical distance indicator, wherein the projector is used for projecting structured optical mode sequence patterns and optical distance ruler patterns, the camera is used for acquiring the structured optical mode sequence patterns projectedby the projector and pictures of the optical distance ruler calibration plate, the optical distance ruler calibration plate is used for calibrating the projector and camera and verifying the accuracyof the optical distance ruler, and the optical distance indicator is used for indicating the scale of the optical distance ruler. The camera and the projector can be calibrated by the accelerator optical distance ruler equipment through a structured optical method to obtain calibration parameters; moreover, the obtained parameters can be further utilized to generate the optical distance ruler patterns. The accelerator optical distance ruler equipment is convenient to install, the calibration accuracy of the calibration method is high, and the calibration process of the optical distance ruler is simplified.
Description
technical field [0001] The invention relates to the technical field of medical devices, in particular to an accelerator optical distance scale device, a calibration method and a method for generating the optical distance scale. Background technique [0002] The optical distance scale device is a device that indicates the distance by projecting visible light on the scale. It is widely used in medical linear accelerators. The accelerator optical distance scale device can project a scaled visible light scale onto the patient to indicate the distance from the patient's skin to the radiation source and the isocenter position of the accelerator. Accelerator optical distance meter equipment is an indispensable and important part of medical linear accelerators. [0003] At present, the optical distance ruler on most linear accelerators is composed of three parts: light source, optical lens or plexiglass film, and optical path indicator. The range indicator indicates the scale. ...
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IPC IPC(8): A61N5/10
CPCA61N5/1049A61N2005/1056
Inventor 文虎儿薛钰黄思盛姚毅
Owner SUZHOU LINATECH MEDICAL SCI & TECH CO LTD