Image acquisition method and capsule endoscope using same

Abstract

The invention discloses an image acquisition method. The method comprises the following steps: establishing a rectangular coordinate system, setting the size of array units of a rectangular photosensitive array as a*b and the number of the array units as 2w*2h, and establishing the rectangular coordinate system by taking the center of the rectangular photosensitive array as an original point; converting coordinates of the array units in the rectangular coordinate system into coordinates of a polar coordinate system, wherein the P points of the array units of the rectangular photosensitive array can be represented as (r, theta) in the polar coordinate system; arranging the array units according to the coordinates of the polar coordinate system, representing all pixel units of the array units by polar coordinates (r, theta), arranging the pixel units according to the value of theta, and placing the pixel units in a coordinate system taking the value of theta as an abscissa and the value of r as an ordinate; and performing interpolation processing on a null value area appearing after the pixel units are converted and arranged to obtain a target image. By adopting the image acquisition method, the shooting visual angle is improved, the shooting blind area is reduced, the stomach examination comfort and the examination efficiency are improved, and the digestive tract is shot more comprehensively.

Description

technical field [0001] The invention relates to the field of image processing, in particular to an image acquisition method and a capsule endoscope using the same. Background technique [0002] Existing capsule endoscopes usually use a single-lens or dual-lens approach to acquire images, where the angle of view of the single lens is usually towards the front of the capsule endoscope, because the single lens is prone to folds in the digestive tract during the observation of the digestive tract. Blind spots appear in some parts of the capsule endoscope, and the solution of using front and rear dual lenses significantly increases the design complexity, and the power consumption of the capsule endoscope is relatively large. [0003] Therefore, it is necessary to develop an image acquisition method to solve the blind spot problem of single-lens shooting in the prior art. Contents of the invention [0004] The invention provides an image acquisition method and a capsule endosco...

AI Technical Summary

Problems solved by technology

[0002] Existing capsule endoscopes usually use a single-lens or dual-lens approach to acquire images, and the angle of view of the single lens is usually towards the front of the capsule endoscope, because the single lens is easy to fold in the digestive tract during the observation of the digestive tract. Blind spots appear in some parts of the camera, and the solution of using front and rear dual lenses significantly increases the design complexity, and the capsule endoscope consumes a lot of power

[0003] Therefore, it is necessary to develop an image acquisition method to solve the blind spot problem of single lens shooting in the prior art

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