A frame rate adjustment system and method for a capsule endoscope

Abstract

The present invention discloses a frame rate adjustment system and method of a capsule endoscope, including a capsule endoscope, an image receiving memory, and an image reading terminal, and further includes an image acquisition module, a pixel matrix extraction module, a histogram image probability statistics module, and a motion matrix The calculation module, the motion coefficient calculation module and the frame rate control module, the pixel matrix extraction module and the histogram image probability statistics module extract the pixel matrix from the image and obtain the histogram image probability matrix, and output them to the motion matrix calculation module and the motion coefficient calculation module, and further output Adjust the shooting frame rate for the frame rate control module. The frame rate adjustment system and method of the present invention can monitor the motion state of the capsule endoscope in real time, extract the pixel matrix of the image, and then count the probability of the histogram image, calculate the motion coefficient by using the motion matrix, and send the frame rate adjustment command to the capsule. The endoscope, and then adjust the shooting frame rate of the capsule endoscope, the data can be processed in real time, and the frame rate adjustment has no delay.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a system and method for adjusting the frame rate of a capsule endoscope. Background technique [0002] The capsule endoscope system consists of a capsule endoscope, an image receiving memory, and a film reading terminal. After the subject swallows the capsule, the capsule takes images along the digestive tract, and transmits the image to the image receiving memory outside the body through a radio frequency signal. The image receiving memory processes and saves the received images. After the inspection is completed, the doctor will import the image files into the image reading terminal for image reading. [0003] Existing capsule endoscopes usually take images at a fixed frame rate, and the capsule moves in the human body with the help of digestive tract peristalsis and gravity, and its moving speed is extremely uneven. When the capsule is still or slowly moving in the digestive tra...

AI Technical Summary

Problems solved by technology

[0003] Existing capsule endoscopes usually take images at a fixed frame rate, and the capsule moves in the human body with the help of digestive tract peristalsis and gravity, and its moving speed is extremely uneven. When the capsule is still or slowly moving in the digestive tract , will generate a large number of redundant images, which not only wastes battery power, but also increases the burden on the reviewers; when the capsule moves quickly in the digestive tract, it may cause missed shots due to insufficient frame rate

[0004] At present, there are two main methods for capsule motion detection and frame rate adjustment. One is to use the motion sensor to detect the displacement and angle changes of the capsule to adjust the shooting frame rate. The motion sensor cannot solve the impact of human breathing and movement, and It will also increase the power consumption of the capsule; the other is to adjust the frame rate of the capsule by monitoring the similarity between adjacent images. The higher the similarity between adjacent images, the slower the movement of the capsule in the body, and vice versa. The lower the similarity between adjacent images, the faster the movement of the capsule in the body. This method cannot be implemented in the capsule due to the complexity of the algorithm. The similarity calculation can only be performed on the receiving device outside the body. However, the communication link The delay will affect the real-time accuracy of frame rate adjustment

Images