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Capsule endoscope-assisted film reading method and system thereof

A technology of capsule endoscopy and film reading, which is applied in the field of image recognition, can solve the problems of inaccurate similarity measurement, incoherent picture playback, and loss of information, so as to ensure the continuity of image playback, reduce the time for film reading, and improve reading. The effect of film speed

Inactive Publication Date: 2012-10-10
SOUTHERN MEDICAL UNIVERSITY
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Problems solved by technology

However, the pictures of capsule endoscopy have been greatly deleted, and the amount of information is inevitably lost, and the picture playback is incoherent
And the similarity measure is not accurate enough, which may lead to missed detection

Method used

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  • Capsule endoscope-assisted film reading method and system thereof

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Embodiment Construction

[0008] The inventive method specifically comprises the following steps:

[0009] 1. The images captured by the capsule endoscope are transmitted to the receiving device through wireless transmission. After the transmission is completed, the images received by the receiving device are transmitted to the computer, and the data image format is obtained, such as BMP format.

[0010] 2. A color image is composed of RGB three-component images. The gray-scale image is to map the R, G, and B components to the diagonals of the R, G, and B cubes, thereby obtaining the color endoscopic image transformation The formula for grayscale pictures is: gray=0.299*r+0.587*g+0.114*b, all color endoscopic pictures are converted into grayscale pictures according to this formula;

[0011] 3. Based on the converted grayscale images, calculate the normalized mutual information NMI between each adjacent two grayscale images; assuming that A and B are two adjacent grayscale images, then Among them, MI(...

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Abstract

The invention discloses a capsule endoscope-assisted film reading method, which comprises: loading images taken by a capsule endoscope onto a film reading station; converting all color images taken by the endoscope into grayscale images; acquiring the normalized mutual information (NMI) between each two adjacent images; and acquiring the time delay between each two adjacent images according to the normalized mutual information between each two adjacent images; and playing all images in turn according to the calculated time delay between each two adjacent images. In the method, the playing speed is controlled according to the normalized mutual information between the images, so the film reading speed is increased and the film reading time of a doctor is reduced; meanwhile, as the images taken by the capsule endoscope are not deleted nor reduced, the integrity of information and continuity of image playing are ensured, and the diagnosis error and leakage possibility is reduced.

Description

technical field [0001] The invention relates to an image recognition technology, in particular to an auxiliary reading method and system for pictures taken by a capsule endoscope. Background technique [0002] Chinese Patent No. CN101584571A, published on November 25, 2009, the name of the invention is a capsule endoscope-assisted film reading method. The application discloses a capsule endoscope-assisted film reading method. The image system first preprocesses the images. This method can block duplicate or similar images, reduce the total number of images to 5-10% of the original, and automatically mark some images with pathological features. However, the pictures of capsule endoscopy have been greatly deleted, and the amount of information will inevitably be lost, and the picture playback will be incoherent. Moreover, the similarity measure is not accurate enough, which may lead to missed detection. Contents of the invention [0003] The purpose of the present inventio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B1/04A61B5/07
Inventor 刘思德徐志扬李凯旋叶山亮潘建南吕庆文
Owner SOUTHERN MEDICAL UNIVERSITY
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