Capsule endoscopy image retrieval method based on visual vocabularies and local descriptors

Abstract

The invention provides a capsule endoscopy image retrieval method based on visual vocabularies and local descriptors. The method concretely comprises the following steps of: building an image library, wherein the image library comprises standard case images and images to be retrieved; converting capsule endoscopy images from an RGB (Red, Green and Blue) color space into an HSI (Hue, Saturation and Intensity) color space, performing quantization processing and extracting a color histogram; extracting an LBP (Local Binary Patterns) texture histogram of the capsule endoscopy images; performing weighing blending on color features and texture features to obtain the visual vocabularies of the images; extracting Sift (Scale invariant feature transform) feature descriptors of the capsule endoscopy images; and performing similarity testing to obtain retrieval results. The method provided by the invention is used for capsule endoscopy image processing; the work intensity of film reading doctors is effectively reduced; and the diagnosis efficiency is improved.

Description

technical field [0001] The invention belongs to the field of medical image retrieval, in particular to a capsule endoscope image retrieval method based on visual vocabulary and local descriptors. Background technique [0002] Gastrointestinal diseases, such as tumors, ulcers and hemorrhage, are a great threat to human health. The traditional gastrointestinal examination method has different degrees of damage to the human body, and cannot examine the small intestine. Capsule endoscopy is a new type of detection technology for gastrointestinal diseases. The patient swallows the capsule, and the capsule moves forward using the power provided by gastrointestinal peristalsis, and continuously takes pictures of the human digestive tract, and the pictures taken are examined and diagnosed by the film reader. The test is painless and can diagnose the entire digestive tract. [0003] Capsule endoscopy expands the field of view of gastrointestinal examination, overcomes the defects ...

AI Technical Summary

Problems solved by technology

However, since capsule endoscopy will generate about 55,000 capsule endoscopic images during the entire detection process, doctors generally need 2 hours to complete the diagnosis of a complete case. The diagnosis efficiency is low and it is difficult to cope with a large amount of examination.

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