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1. WO2017145270 - IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND ENDOSCOPE

Publication Number WO/2017/145270
Publication Date 31.08.2017
International Application No. PCT/JP2016/055303
International Filing Date 23.02.2016
IPC
A61B 1/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
CPC
A61B 1/00009
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes
00002Operational features of endoscopes
00004characterised by electronic signal processing
00009of image signals
A61B 1/0005
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes
00002Operational features of endoscopes
00043provided with signal output arrangements
00045Display arrangement
0005for multiple images
A61B 1/00096
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes
00064Constructional details of the endoscope body
00071Insertion part of the endoscope body
0008characterised by distal tip features
00096Optical elements
A61B 1/00112
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes
00112Connection or coupling means
A61B 1/00163
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes
00163Optical arrangements
A61B 1/00179
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
1Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes
00163Optical arrangements
00174characterised by the viewing angles
00179for off-axis viewing
Applicants
  • オリンパス株式会社 OLYMPUS CORPORATION [JP]/[JP]
Inventors
  • 福島 郁俊 FUKUSHIMA, Ikutoshi
Agents
  • 上田 邦生 UEDA, Kunio
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND ENDOSCOPE
(FR) APPAREIL DE TRAITEMENT D'IMAGE, PROCÉDÉ DE TRAITEMENT D'IMAGE, ET ENDOSCOPE
(JA) 画像処理装置、画像処理方法および内視鏡
Abstract
(EN)
The purpose of the present invention is to easily obtain height information of a subject disposed inside an elongated tubular member. The image processing apparatus (8) according to the present invention includes: an image conversion unit (11) into which two images are input, and which sets the central axis of the optical system in each input image and performs polar coordinate conversion on each image using the set central axis, the two images being obtained by inserting, inside a tubular member to be observed along a longitudinal direction thereof, an optical system having a field of view in at least a 90 degree direction relative to a central axis and imaging the inner peripheral surface of the member being observed at different locations along the longitudinal direction; a correspondence point detection unit (12) which detects correspondence points of the two converted images which have been subjected to the polar coordinate conversion; and a distance calculation unit (13) which calculates the distance of the inner peripheral surface of the member being observed from the central axis of the optical system on the basis of the distance between the imaging locations of the two images along the longitudinal direction and the correspondence points of the two converted images detected by the correspondence point detection unit (12).
(FR)
L'objet de la présente invention est d'obtenir facilement des informations de hauteur d'un sujet se trouvant à l'intérieur d'un élément tubulaire allongé. L'appareil (8) de traitement d'images selon la présente invention comprend : une unité (11) de conversion d'images dans laquelle sont entrées deux images, et qui définit l'axe central du système optique dans chaque image entrée et effectue une conversion en coordonnées polaires sur chaque image en utilisant l'axe central défini, les deux images étant obtenues en insérant, à l'intérieur d'un élément tubulaire à observer le long de sa direction longitudinale, un système optique ayant un champ de vue dans au moins une direction à 90 degrés par rapport à un axe central et en obtenant une image de la surface périphérique interne de l'élément qui est observé à différents emplacements le long de la direction longitudinale ; une unité (12) de détection de points de correspondance qui détecte des points de correspondance entre les deux images converties qui ont été soumises à la conversion en coordonnées polaires ; et une unité (13) de calcul de distance qui calcule la distance entre la surface périphérique interne de l'élément qui est observé et l'axe central du système optique en se basant sur la distance entre les emplacements d'imagerie des deux images le long de la direction longitudinale et sur les points de correspondance entre les deux images converties détectées par l'unité (12) de détection de points de correspondance.
(JA)
細長い管状部材の内面に配置された被写体の高さ情報を簡易に求めることを目的として、本発明に係る画像処理装置(8)は、管状の被観察部材の内部に長手方向に沿って、中心軸に対して少なくとも90°方向の視野を有する光学系を挿入して、長手方向に沿う異なる位置で被観察部材の内周面を撮影することにより取得された2枚の画像が入力され、入力された各画像に光学系の中心軸を設定して、設定された中心軸を用いて画像をそれぞれ極座標変換する画像変換部(11)と、極座標変換された2枚の変換後画像の対応点を検出する対応点検出部(12)と、2枚の画像の撮影位置の長手方向に沿う距離と、対応点検出部(12)により検出された2枚の変換後画像の対応点とに基づいて、被観察部材の内周面の光学系の中心軸からの距離を算出する距離算出部(13)とを備える。
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