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Endoscope focusing control method and system

A focus control and endoscope technology, applied in the field of endoscope imaging, can solve problems such as difficulty in focusing, achieve the effects of improving focus accuracy, fast and accurate focus, and reducing labor burden

Pending Publication Date: 2022-08-05
THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method for controlling the focus of an endoscope, which solves the problem that it is difficult to focus or fails to focus when zooming in / out for observation, and improves image clarity

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  • Endoscope focusing control method and system
  • Endoscope focusing control method and system

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Embodiment Construction

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

[0045] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying th...

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Abstract

The invention relates to an endoscope focusing control method and system. The focusing control method comprises the following steps: acquiring a to-be-zoomed image through a camera shooting optical system; performing zooming operation on a region of interest in the to-be-zoomed image; obtaining a scaling ratio S for scaling operation; acquiring a magnification variation distance g (s) of a zoom lens in the endoscope system; acquiring the movement distance d = K * g (s) of the zoom lens; compensating the moving distance d, driving the zoom lens to move for focusing, and then entering a fine focusing mode: finely adjusting the zoom lens to obtain a plurality of images at different positions within a distance threshold range; determining a clear focusing position according to the plurality of images; and driving the zoom lens to move to the clear focusing position. The objective of the invention is to solve the problem of difficulty in focusing or focusing failure during zoom-in / zoom-out observation.

Description

technical field [0001] The present invention relates to the technical field of endoscope imaging, in particular to a method and system for focusing control of an endoscope. Background technique [0002] Conventionally, endoscope apparatuses that irradiate illuminating light to tissues in a body cavity and perform diagnosis and treatment using image signals generated from the reflected light have been widely used. [0003] The endoscope optical system is generally designed to focus on a panorama with a wide depth of field. Therefore, during normal observation, a focused image can be obtained from the far point to the near point of the subject. [0004] However, since the depth of field becomes shallow during magnification observation, the frequency of being out of focus increases. In order for the user to observe the subject in the focused endoscopic image, the user needs to manually perform the focusing operation, which brings a great burden. SUMMARY OF THE INVENTION [...

Claims

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Application Information

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IPC IPC(8): G02B23/24G02B7/38A61B1/00A61B1/045
CPCG02B23/2438G02B23/2484G02B7/38A61B1/045A61B1/00009A61B1/00039A61B1/00188
Inventor 于腾波马金龙王晓南陈进利赵海波张登康时春峰
Owner THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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