Frame rate adjusting system and method of capsule endoscope

Abstract

The invention discloses a frame rate adjusting system and method of a capsule endoscope. The system comprises a capsule endoscope, an image receiving memory and a film reading terminal; the system further comprises an image acquisition module, a pixel matrix extraction module, a histogram image probability statistics module, a motion matrix calculation module, a motion coefficient calculation module and a frame rate control module, wherein the pixel matrix extraction module and the histogram image probability statistics module extract a pixel matrix from an image, acquire a histogram image probability matrix, output the histogram image probability matrix to the motion matrix calculation module and the motion coefficient calculation module, and further output the histogram image probabilitymatrix to the frame rate control module to adjust a shooting frame rate. By adopting the frame rate adjusting system and method, the motion state of the capsule endoscope can be monitored in real time, the pixel matrix of the image can be extracted, the probability of histogram images can be counted, the motion coefficient can be calculated by adopting the motion matrix, the frame rate adjustinginstruction can be sent to the capsule endoscope, the shooting frame rate of the capsule endoscope can be adjusted, data can be processed in real time, and frame rate adjustment is not delayed.

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...

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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

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