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Focus control device, endoscope device, and control method for focus control device

A technology of focus control and focus control unit, which is applied to endoscopes, installations, laparoscopes, etc., and can solve problems such as inability to focus on living bodies

Active Publication Date: 2017-08-01
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the treatment equipment with higher contrast than the living body may be in focus, but the living body may not be in focus.

Method used

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  • Focus control device, endoscope device, and control method for focus control device
  • Focus control device, endoscope device, and control method for focus control device
  • Focus control device, endoscope device, and control method for focus control device

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Embodiment Construction

[0037] Embodiments will be described below. In addition, this embodiment described below does not unduly limit the content of the present invention described in the claims. In addition, not all the configurations described in this embodiment are essential configuration requirements of the present invention.

[0038] 1. The method of this embodiment

[0039] First, the method of this embodiment will be described. Generally speaking, in addition to the subject that the user is paying attention to, a subject that becomes an obstacle may be photographed in the captured image. In this case, the subject of interest is preferably in a state that is easy to see in the captured image, that is, in a focused (in-focus) state. However, when simply using autofocus (AF), it may not be possible to focus on the subject of interest. For example, in the case of contrast AF, a high-contrast area is focused. Therefore, as described above, although a living body is being focused on, treatment ...

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PUM

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Abstract

A focus control device including: a region setting unit (2010) which sets a plurality of regions including a plurality of pixels in a captured image captured by an image capture unit (200); a direction discrimination unit 2040 which discriminates between a NEAR and a FAR target focusing position in one or all of the plurality of set regions, said target focusing position being a target for the position of a focus object in relation to a reference position, and determines a direction discrimination result for each region; and a focus control unit that implements focus control for focusing with priority to the regions at a far distance from the image capture unit (200) among the plurality of regions on the basis of the direction discrimination results.

Description

technical field [0001] The present invention relates to a focus control device, an endoscope device, a control method of the focus control device, and the like. Background technique [0002] In an endoscope system, the depth of field is required to be as deep as possible so as not to hinder the user's diagnosis and treatment. However, in recent years, even in endoscope systems, the depth of field has been becoming shallower due to the use of high-pixel imaging elements, so endoscope systems that perform automatic focusing (hereinafter referred to as AF) have been proposed. [0003] In endoscopic surgery, in order to resect or suture a lesion, a surgical instrument such as an electric knife or forceps may enter between a living body to be in focus and an endoscopic system that is an imaging device. In this case, a treatment tool with a higher contrast than that of the living body may be in focus, but the living body may not be in focus. [0004] Patent Document 1 discloses ...

Claims

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Application Information

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IPC IPC(8): H04N5/232A61B1/00A61B1/04G02B7/28H04N5/225
CPCG02B7/34G02B7/38G02B23/2469G02B23/26A61B1/00006A61B1/00188A61B1/000095H04N23/555H04N23/56H04N23/673H04N23/675H04N23/667H04N25/134A61B1/045A61B1/3132
Inventor 三上俊彰市川学吉野浩一郎
Owner OLYMPUS CORP
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