Image tracking acquisition method, imaging system and computer device

Abstract

The application provides an image tracking and collecting method, an imaging system and a computer device. The image tracking and collecting method comprises: initially collecting N pieces of image data of an imaging part, recording a position parameter of the imaging part in each piece of the image data, fitting a motion curve according to the position parameter, wherein N is greater than or equal to 3; predicting a predetermined position of the imaging part when collecting a next frame of the image data according to the motion curve; and controlling the movement of a ray generating device and a signal collecting device according to the predetermined position. Through the image tracking and collecting method, the system can predict the predetermined position of the imaging part when collecting the next frame of the image, and control the signal collecting device to move according to the predetermined position, so that the imaging part is always located in the signal receiving range of the signal collecting device. In the process of photographing the human body, human intervention is not required, the quality of the dynamic image is ensured, and the efficiency of the examination is improved.

Claims

1. An image tracking and acquisition method, characterized in that, Applied to an imaging system, the imaging system comprising: Data acquisition system: used to acquire real two-dimensional image data, including a ray generator and a signal acquisition device; The radiation generating device, used to emit X-rays, includes a first robotic arm and an X-ray emitter disposed on the first robotic arm; The signal acquisition device, used to receive X-rays, includes a second robotic arm and a detector mounted on the second robotic arm; The X-ray emitter and the detector move under the drive of the first robotic arm and the second robotic arm; Information control system: connected to the data acquisition system by signal, used to execute the image tracking acquisition method to perform image tracking acquisition; The method includes: Initially, N images of the imaging region are acquired, and the positional parameters of the imaging region in each image are recorded, where N≥3; when N>6, the positional parameters of the 6 images closest to the next frame are selected. Based on the position parameters, the direction parameters and velocity parameters are calculated, and the motion curve is fitted to the direction parameters and velocity parameters using the least squares method. The predetermined position of the imaging part is predicted when the next frame of image data is acquired based on the motion curve; A standard curve for human motion is used. The motion curve is compared with the standard curve, and the predetermined position is corrected based on the comparison result. When there is a difference between the predetermined position on the motion curve and the predetermined position on the standard curve in the next frame of image data, the area that is biased towards the predetermined position on the motion curve is selected as the corrected predetermined position. The corrected predetermined position is determined. If the corrected predetermined position is within the acquisition range of the signal acquisition device, the X-ray generator and the signal acquisition device do not move. If the corrected predetermined position is outside the acquisition range of the signal acquisition device, the first robotic arm and the second robotic arm are controlled to move, so as to move the X-ray emitter and the detector to the matching position, so that the imaging part is within the acquisition field of view.

2. The image tracking and acquisition method according to claim 1, characterized in that, When calculating the distance between a predetermined position on the motion curve and a predetermined position on the standard curve when calculating the next frame of image data, the predetermined position is taken as the point that is offset from the predetermined position on the motion curve at two-fifths of the distance.

3. The image tracking and acquisition method according to claim 1, characterized in that: The standard curve of human motion state is collected or imported by the system.

4. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the method described in any one of claims 1 to 3.

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