Design Of Visual-based Target Tracking And Result Projection System

Acupoint acupuncture is one of the important methods of Chinese medicine to treat diseases and save people.The patient’s cold and heat deficiency and excess will be concentrated in the abdomen.Therefore,the detection of abnormal acupoints in the abdomen can provide a basis for acupuncture therapy.The thesis designs a vision-based target tracking and result projection system,which can project abnormal detection results of acupoints onto the acupuncture points measured on the abdomen,which is convenient for medical staff to apply intervention measures and relieve the pain of patients.The topic selection of the thesis has important application value.The paper constructs a target tracking and result projection system composed of industrial computer,camera and projector.adopts AprilTag as the visual label for target detection and tracking,gives the system workflow,calibrate the camera and the projector,calculate the conversion relationship between the pixel coordinate system and the projection coordinate system;the measurement algorithm of the sensor tag Tag A and the patient’s abdomen tag Tag B is designed in detail,and calculate the stable positional relationship between the two tags;the sensor tracking algorithm is designed,under the premise of detecting the position,angle and distance of Tag B,the position of the original sensor(Tag A)can be tracked;the pixel position of 128 probes is converted to the projection coordinate system,and the acupuncture point the measurement results are converted into 128 colored circles,and the colored circles are accurately projected to the position of the original sensor probe,which visually displays the abnormal condition of each acupoint of the patient,and provides convenience for subsequent intervention measures.The system’s function,position measurement accuracy,target tracking accuracy,projection accuracy,etc.have been tested.The results show that the system designed in the thesis can accurately track the target,correctly project the acupoint measurement results,and meet the design requirements of the system.