Dual-target positioning method for simulated medical instrument and virtual simulation medical teaching system

A positioning method and technology of medical equipment, applied in the field of medical teaching and training system, can solve the problem of not being able to adjust the activity area at will

Inactive Publication Date: 2018-11-16
苏州敏行医学信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The active area of ​​the robotic arm is affected by the length of the robotic arm, and the active area cannot be adjusted arbitrarily

Method used

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  • Dual-target positioning method for simulated medical instrument and virtual simulation medical teaching system
  • Dual-target positioning method for simulated medical instrument and virtual simulation medical teaching system
  • Dual-target positioning method for simulated medical instrument and virtual simulation medical teaching system

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Experimental program
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Embodiment Construction

[0083] Such as figure 1 As shown, the dual-target positioning method of a simulated medical device according to an embodiment of the present invention is characterized in that it includes the following steps:

[0084] Step S101, associating: associating the instrument with the characteristic target.

[0085] Step S103, configuring the cameras: configuring a pair of cameras, adjusting the focal length of the cameras, adjusting the angle and distance between the two cameras, so as to adjust the overlap area of ​​the two cameras.

[0086] Step S105, capturing the instrument: capture the characteristic target by taking a snapshot to capture the instrument.

[0087] Step S107, calibration: the camera acquires the image of the calibration reference object, measures the position of each feature point on the calibration reference object relative to the world coordinate system, selects the world coordinate system as the object coordinate system of the calibration reference object, and...

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Abstract

The invention relates to a dual-target positioning method for a simulated medical instrument and a virtual simulation medical teaching system. The dual-target positioning method comprises: an instrument is associated with a feature target; cameras are configured and an overlapped view area between two cameras is adjusted; calibration is carried out; to be specific, the cameras obtain images of a calibration reference object and internal and external parameters of the cameras are calculated; correction is carried out; to be specific, distortion elimination and row alignment are carried out on aleft view and a right view respectively according to the internal and external parameters obtained after camera calibration, so that antipode lines are aligned in rows; instrument capturing is carried out; to be specific, a feature target is captured to capture an instrument; and three-dimensional matching is carried out; to be specific, three-dimensional matching is carried out based on a mapping relationship and distortion is corrected, and a spatial position of the instrument is calculated in real time. According to the invention, only a designated feature target needs to be pasted to thesurface of a medical instrument and no other object connection is needed, so that the portability is improved substantially and the simulation degree is increased; the moving area is adjusted by adjusting the cameras, so that the operating area is increased greatly; and a plurality of medical simulation instruments can be identified simultaneously.

Description

technical field [0001] The invention relates to a medical teaching and training system, in particular to a dual-target positioning method for a simulated medical device in a virtual simulated medical education system and the system. Background technique [0002] The medical simulation system can reflect the position, speed, direction and angle of the operator using the device in real time according to the spatial position information of the device. Combined with the norms in actual medical operations, a comparison is made to reflect the operator's skill proficiency, advantages and disadvantages. Provides a new simulation idea for moving objects. At present, in the field of medical simulation, many tracking schemes are used, usually through the robotic arm sensing scheme to obtain the three-dimensional space position of the device. The active area of ​​the robotic arm is affected by the length of the robotic arm, and the active area cannot be adjusted arbitrarily. Content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80G06T7/30G06T5/00
CPCG06T5/00G06T2207/10016G06T7/30G06T7/80
Inventor 于福东刘平
Owner 苏州敏行医学信息技术有限公司
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