JP6022106B2 - 内視鏡システム - Google Patents
内視鏡システム Download PDFInfo
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- JP6022106B2 JP6022106B2 JP2016501262A JP2016501262A JP6022106B2 JP 6022106 B2 JP6022106 B2 JP 6022106B2 JP 2016501262 A JP2016501262 A JP 2016501262A JP 2016501262 A JP2016501262 A JP 2016501262A JP 6022106 B2 JP6022106 B2 JP 6022106B2
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Description
図1は本発明の第1の実施の形態に係る内視鏡システムを示すブロック図である。また、図2は内視鏡の挿入部が体腔内に挿入されている様子を示す説明図である。
図6は本発明の第2の実施の形態を示すブロック図である。図6において図1と同一の構成要素には同一符号を付して説明を省略する。第1の実施の形態においては、撮像部と照明部とを相対的に移動させながら撮像を行い、撮像画像中の凸部の影によって凸部を検出して凸部のサイズを求める例について説明した。生体組織の表面の状態、照明光の照射位置等によっては、凸部による影が生じないことも考えられる。そこで、本実施の形態においては、キャップ状の照明器具を用いることで、凸部による影を生じさせて、確実に凸部の検出及び凸部のサイズの検出を行うものである。
図15乃至図17は第2の実施の形態に採用可能な挿入部及びキャップの変形例を示す断面図である。
ところで、観察部位の表面は、平坦であるとは限らない。観察部位の表面が平坦でない場合には、撮像画像に基づく凸部の検出及びそのサイズの算出精度が低下することが考えられる。そこで、本変形例では、観察部位の表面に照明部(例えば、図1の第1照明部15や図6の第4照明部114)によって格子を投影し、投影された格子の形状に基づいて撮像画像を補正することで、凸部の検出及びそのサイズの算出精度を向上させる。
図20は本発明の第3の実施の形態を示すブロック図である。図20において図1と同一の構成要素には同一符号を付して説明を省略する。上記各実施の形態においては、同一時間に、又は異なる時間において、被写体を相互に異なる方向から照明し、影の状態から凸部を検出すると共にそのサイズを求める例を説明した。本実施の形態は、被写体に対する1方向からの照明のみによって、凸部のサイズを求めるものである。なお、本実施の形態は、位置が既知の凸部について、その正確なサイズを求めるための手法を示しているが、上記各実施の形態と同様の手法を採用することにより、凸部の位置を検出することも可能である。
凸部252の中心(凸病変部の中心点O)から影261の先端までの距離をxとすると、図21に示すように、第1照明部231からの照明光が水平方向となす角はθ1であるので、x=h/tanθ1が成り立つ。従って、l=x−(d/2)=(h/tanθ1)−(d/2)である。凸部252は例えば2mm以下程度の十分に小さい大きさを想定しており、d=0と近似して、下記(1)式を得る。h=l・tanθ1 …(1)
また、角度φは、φ=(π/2)−θ1であり、既知の値である。この角度φと未知の値h,h'を用いて高さHは下記(2)式で示される。H=h+y/tanφ+h' …(2)
(2)式を(1)式に代入すると、下記(3)式が得られる。H=l・tanθ1+(y/tanφ)+h' …(3)
撮像部213の視野角θ2は既知の値であるので、視野範囲Wと高さHとの関係も既知である。そこで、視野範囲Wを下記(4)に示す高さHの関数で表す。W=f(H) …(4)
撮像部213の視野角がθ2であるので、H・tan(θ2/2)=W/2であり、下記(5)式が得られる。W=2H・tan(θ2/2) …(5)
ここで、l/W=Kとする。l,Wのピクセル数は求められているので、Kは既知の値である。W=l/Kと変形し、上記(3)式及び(4)式を用いて下記(6)式を得る。W=l/K=f(l・tanθ1+(y/tanφ)+h') …(6)
上記(6)式のうち、K,θ1,y,φ,h'は既知の値であり、上記(6)式からlを算出することができる。算出したlを上記(1)式に代入することで、凸部252の高さhを求めることができる。
Claims (4)
- 照明光を照射し、所定の照明範囲を照明する照明部と、
前記照明部によって照明された被検体の所定の撮像範囲を撮像する撮像部と、
前記撮像部により撮像された前記被検体の撮像画像中の凸部を検出する凸部特定部と、
前記凸部特定部が検出した前記凸部の情報に基づいて所定のサイズ範囲の凸部を検出する凸部サイズ算出部とを具備し、
前記照明部は、前記被検体を相互に異なる方向から相互に異なる帯域の光で照明する複数の照明光出射部を具備し、
前記撮像部は、内視鏡の挿入部の先端に取り付けられて前記挿入部の軸方向に光軸を有し、
前記複数の照明光出射部は、前記挿入部の先端に取り付けられて前記撮像部の撮像範囲を規定する筒状のキャップの先端側内周面に設けられることを特徴とする内視鏡システム。 - 前記複数の照明光出射部は、前記撮像部の光軸に対して略直交する方向から前記被検体を照明することを特徴とする請求項1に記載の内視鏡システム。
- 前記凸部サイズ算出部は、前記撮像範囲のサイズに基づいて前記凸部のサイズを算出することを特徴とする請求項1に記載の内視鏡システム。
- 前記凸部サイズ算出部は、前記凸部特定部が前記複数の照明光出射部からの照明光によって生じた前記凸部の情報に基づいて所定のサイズ範囲の凸部を検出することを特徴とする請求項1に記載の内視鏡システム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014195589 | 2014-09-25 | ||
JP2014195589 | 2014-09-25 | ||
PCT/JP2015/063305 WO2016047191A1 (ja) | 2014-09-25 | 2015-05-08 | 内視鏡システム |
Publications (2)
Publication Number | Publication Date |
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JP6022106B2 true JP6022106B2 (ja) | 2016-11-09 |
JPWO2016047191A1 JPWO2016047191A1 (ja) | 2017-04-27 |
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Application Number | Title | Priority Date | Filing Date |
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JP2016501262A Active JP6022106B2 (ja) | 2014-09-25 | 2015-05-08 | 内視鏡システム |
Country Status (5)
Country | Link |
---|---|
US (1) | US10264956B2 (ja) |
EP (1) | EP3150103A4 (ja) |
JP (1) | JP6022106B2 (ja) |
CN (1) | CN106535734B (ja) |
WO (1) | WO2016047191A1 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10117563B2 (en) * | 2014-01-09 | 2018-11-06 | Gyrus Acmi, Inc. | Polyp detection from an image |
DE102016122102A1 (de) * | 2016-11-17 | 2018-05-17 | Westfälische Wilhelms-Universität Münster | Schutzkappe für eine bildgebende Vorrichtung |
JP6898425B2 (ja) * | 2017-03-03 | 2021-07-07 | 富士フイルム株式会社 | 計測支援装置、内視鏡システム、及び内視鏡システムのプロセッサ |
EP3603477A4 (en) | 2017-03-28 | 2020-02-05 | FUJIFILM Corporation | MEASUREMENT SUPPORT DEVICE, ENDOSCOPIC SYSTEM AND PROCESSOR |
JP6666519B2 (ja) | 2017-03-28 | 2020-03-13 | 富士フイルム株式会社 | 計測支援装置、内視鏡システム、及びプロセッサ |
US20200054243A1 (en) * | 2018-08-17 | 2020-02-20 | Acclarent, Inc. | Endoscope with anatomy elevation assembly |
CN109961448A (zh) * | 2019-04-10 | 2019-07-02 | 杭州智团信息技术有限公司 | 组织病变区域勾勒方法及系统 |
JP7320620B2 (ja) * | 2019-12-26 | 2023-08-03 | 富士フイルム株式会社 | 内視鏡及び内視鏡システム |
CA3212013A1 (en) * | 2021-03-03 | 2022-09-09 | Boston Scientific Scimed, Inc. | Scope modifications to enhance scene depth inference |
KR102567070B1 (ko) * | 2021-04-22 | 2023-08-16 | 재단법인 아산사회복지재단 | Led 내시경 캡을 이용한 저준위 레이저 치료기 |
WO2024185468A1 (ja) * | 2023-03-08 | 2024-09-12 | 富士フイルム株式会社 | 医療支援装置、内視鏡システム、医療支援方法、及びプログラム |
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EP2301411B1 (en) * | 2009-01-15 | 2012-12-12 | Olympus Medical Systems Corp. | Endoscope system |
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JPS5844030A (ja) * | 1981-09-10 | 1983-03-14 | オリンパス光学工業株式会社 | 内視鏡斜照明用シ−ス |
JP2003164419A (ja) * | 2001-12-04 | 2003-06-10 | Pentax Corp | 内視鏡スコープ |
JP2009273655A (ja) * | 2008-05-14 | 2009-11-26 | Fujifilm Corp | 画像処理システム |
JP2010082271A (ja) * | 2008-09-30 | 2010-04-15 | Fujifilm Corp | 凹凸検出装置、プログラム、及び方法 |
JP2011183000A (ja) * | 2010-03-09 | 2011-09-22 | Olympus Medical Systems Corp | 内視鏡装置 |
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CN106535734B (zh) | 2018-02-13 |
CN106535734A (zh) | 2017-03-22 |
EP3150103A4 (en) | 2018-02-21 |
JPWO2016047191A1 (ja) | 2017-04-27 |
US10264956B2 (en) | 2019-04-23 |
US20170105613A1 (en) | 2017-04-20 |
EP3150103A1 (en) | 2017-04-05 |
WO2016047191A1 (ja) | 2016-03-31 |
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