Method and system for extracting clear image frame from recorded fundus video

Abstract

The invention relates to a method and a system for extracting a clear image frame from a recorded fundus video. According to the invention, each frame of the image of a video file is subjected to YUV treatment, and then the characteristic value of each pixel point is calculated. Meanwhile, a certain frame of the image with a maximum effective contrast average value is found, and finally the frame of the image is outputted. The method and the system can be applied to various fundus image acquisition equipments. A collector records a video which is directly captured by a camera shooting device during the collection process. For example, the entry pupil of an acquisition equipment is attempted to be aligned with the pupil of a to-be-collected person during the preparation stage, and a plurality of times of alignments are conducted during the collection process or high-quality fundus images are successfully captured momently or continuously. The shooting angle is coordinated and adjusted according to the to-be-collected person during the collection interval, and the transition stage is completed after the collection. The collector does not need to carry out manual editing on the video or set software parameters, and then a high-quality fundus image can be obtained after the software processing operation. Moreover, a representative part is further screened out through manual screening so as to be used for clinical diagnosis.

Description

technical field [0001] The invention relates to the field of pathological image processing, in particular to a method and system for extracting clear image frames from recorded fundus video. Background technique [0002] The part of the eye seen through the pupil, the inner lining of the eyeball, including the retina, optic disc, and macula. Due to the transparency of the retina, the term also includes Bruch's membrane and choroid. The fundus is the only part of the human body that can directly see the microcirculation of blood circulation. Diseases of the fundus, including diseases of the retina, optic disc and choroid, are commonly referred to as fundus diseases. Many fundus diseases are closely related to changes in the vitreous body, so vitreous body lesions are also included. [0003] At present, doctors use the traditional direct ophthalmoscope to observe the patient's fundus lesions, including the lighting system and the observation system. Its basic principle is t...

AI Technical Summary

Problems solved by technology

"In actual use, it is found that when one hand holds the above-mentioned shooting frame and the other hand clicks the shooting button, it will cause the shooting frame to shake slightly, which will affect the shooting image quality.