JP2020081540A - Processing achievement degree determination apparatus, determination system, determination method, and program - Google Patents

Processing achievement degree determination apparatus, determination system, determination method, and program Download PDF

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JP2020081540A
JP2020081540A JP2018222688A JP2018222688A JP2020081540A JP 2020081540 A JP2020081540 A JP 2020081540A JP 2018222688 A JP2018222688 A JP 2018222688A JP 2018222688 A JP2018222688 A JP 2018222688A JP 2020081540 A JP2020081540 A JP 2020081540A
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achievement
color
determination
color value
degree
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Inventor
大輔 金子
Daisuke Kaneko
大輔 金子
古澤 幹礼
Mikinori Furusawa
幹礼 古澤
靖弘 川崎
Yasuhiro Kawasaki
靖弘 川崎
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Canon Inc
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Canon Inc
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Priority to JP2018222688A priority Critical patent/JP2020081540A/en
Priority to PCT/JP2019/044549 priority patent/WO2020110730A1/en
Publication of JP2020081540A publication Critical patent/JP2020081540A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/26Accessories or devices or components used for biocidal treatment
    • A61L2/28Devices for testing the effectiveness or completeness of sterilisation, e.g. indicators which change colour
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00Image analysis
    • G06T7/0002Inspection of images, e.g. flaw detection
    • G06T7/0004Industrial image inspection
    • G06T7/0006Industrial image inspection using a design-rule based approach
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00Image analysis
    • G06T7/90Determination of colour characteristics
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46Colour picture communication systems
    • H04N1/56Processing of colour picture signals
    • H04N1/60Colour correction or control
    • H04N1/603Colour correction or control controlled by characteristics of the picture signal generator or the picture reproducer
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J2003/466Coded colour; Recognition of predetermined colour; Determining proximity to predetermined colour
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00Indexing scheme for image analysis or image enhancement
    • G06T2207/10Image acquisition modality
    • G06T2207/10016Video; Image sequence
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00Indexing scheme for image analysis or image enhancement
    • G06T2207/10Image acquisition modality
    • G06T2207/10024Color image
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00Indexing scheme for image analysis or image enhancement
    • G06T2207/30Subject of image; Context of image processing
    • G06T2207/30108Industrial image inspection
    • G06T2207/30164Workpiece; Machine component

Abstract

To determine the degree of achievement of processing regardless of the manner of color change in the discoloration area of test paper.SOLUTION: A determination apparatus for determining the achievement degree of predetermined processing with test paper having a discoloration area in which the color changes in accordance with the achievement degree of the predetermined processing, comprises: measuring means for measuring a color value of the discoloration area of the test paper; holding means for holding a plurality of reference color values indicating a plurality of colors in the discoloration area corresponding to a plurality of achievement degrees of the predetermined processing and threshold values corresponding to each achievement degrees in a set of two neighboring achievement degrees among a plurality of achievement degrees; determining means for determining the achievement degree of the predetermined processing on the basis of the measured color value of the discoloration area of the test paper measured by the measuring means, the plurality of reference color values, and threshold values corresponding to each achievement degrees in the set of two neighboring achievement degrees.SELECTED DRAWING: Figure 4

Description

本発明は、所定の処理の達成度の判定技術に関する。 The present invention relates to a technique for determining the degree of achievement of a predetermined process.

容器内の滅菌対象物を、高圧蒸気や過酸化水素等の雰囲気に暴露することで、滅菌対象物を滅菌することが行われている。この際、滅菌対象物に対する滅菌処理の達成度を判定するため、所謂、滅菌用のケミカルインジケータ(以下、CI)が使用されている。CIは、滅菌剤(蒸気や過酸化水素等)による滅菌処理に必要な条件の達成度合いに応じて変色する変色領域を有する。滅菌処理の達成度合いは、CIの変色領域の色の変化を判定することによる行われるが、目視による判定では誤判定が生じ得る。このため、特許文献1は、光学的にCIの変色領域の色を読み取ることで、滅菌処理の達成度を測定する測定装置を開示している。 BACKGROUND ART The object to be sterilized in a container is sterilized by exposing the object to be sterilized to an atmosphere such as high-pressure steam or hydrogen peroxide. At this time, a so-called chemical indicator for sterilization (hereinafter, CI) is used in order to determine the degree of achievement of the sterilization treatment on the sterilization target. The CI has a discolored area that discolors in accordance with the degree of achievement of the conditions required for sterilization treatment with a sterilizing agent (steam, hydrogen peroxide, etc.). The degree of achievement of the sterilization process is performed by determining the color change of the CI discolored area, but a visual determination may cause an erroneous determination. Therefore, Patent Document 1 discloses a measuring device which optically measures the degree of achievement of the sterilization process by reading the color of the CI discolored area.

特開2003−325646号公報JP, 2003-325646, A

特許文献1は、CI(試験紙)の変色領域の初期状態の色と滅菌処理後に測定した色との色差により、滅菌処理の達成度を判定するものであるため、CIの変色領域の色が、色空間において直線的に変化する場合にのみ適用可能である。したがって、変色領域の色が、色空間において直線的に変化しないCIを含む任意のCIに対して特許文献1の構成を適用することができない。 Patent Document 1 determines the degree of achievement of the sterilization process based on the color difference between the color in the initial state of the discolored region of the CI (test paper) and the color measured after the sterilization process. , Is applicable only when the color space changes linearly. Therefore, the configuration of Patent Document 1 cannot be applied to any CI including a CI in which the color of the color-changed region does not change linearly in the color space.

本発明は、試験紙の変色領域の色の変化の態様に拘わらず処理の達成度を判定できる判定技術を提供するものである。 The present invention provides a determination technique capable of determining the degree of achievement of processing regardless of the manner in which the color of the discolored area of the test paper changes.

本発明の一態様によると、所定の処理の達成度に応じて色が変化する変色領域を有する試験紙により前記所定の処理の達成度を判定する判定装置は、前記試験紙の前記変色領域の色値を測定する測定手段と、前記所定の処理の複数の達成度に対応する前記変色領域の複数の色を示す複数の基準色値と、前記複数の達成度の隣接する2つの達成度の組それぞれに対応する閾値を保持する保持手段と、前記測定手段が測定した前記試験紙の前記変色領域の測定色値と、前記複数の基準色値と、前記複数の達成度の隣接する2つの達成度の組それぞれに対応する閾値と、に基づき、前記所定の処理の達成度を判定する判定手段と、
を備えることを特徴とする。
According to an aspect of the present invention, the determination device for determining the degree of achievement of the predetermined processing by a test paper having a color-changing area in which the color changes according to the degree of achievement of the predetermined processing is A measuring unit for measuring a color value; a plurality of reference color values indicating a plurality of colors of the color change area corresponding to a plurality of achievement levels of the predetermined process; and two adjacent achievement levels of the plurality of achievement levels. Holding means for holding the threshold value corresponding to each set, the measurement color value of the color change area of the test paper measured by the measurement means, the plurality of reference color values, the two adjacent two of the plurality of achievement degree A threshold value corresponding to each of the achievement levels, based on the determination means, to determine the achievement level of the predetermined process,
It is characterized by including.

本発明によると、試験紙の変色領域の色の変化の態様に拘わらず処理の達成度を判定することができる。 According to the present invention, it is possible to determine the degree of achievement of processing regardless of the manner in which the color of the discolored area of the test paper changes.

一実施形態による判定装置の構成図。The block diagram of the determination device by one Embodiment. 一実施形態によるCIを示す図。FIG. 6 illustrates a CI according to one embodiment. 一実施形態による複数の達成度の色空間における座標を示す図。FIG. 6 is a diagram showing coordinates in a color space of a plurality of achievement levels according to an embodiment. 一実施形態による達成度の判定方法の説明図。Explanatory drawing of the determination method of the achievement degree by one Embodiment. 一実施形態による達成度の判定方法の説明図。Explanatory drawing of the determination method of the achievement degree by one Embodiment. 一実施形態による達成度の判定方法の説明図。Explanatory drawing of the determination method of the achievement degree by one Embodiment. 一実施形態による達成度の判定方法の説明図。Explanatory drawing of the determination method of the achievement degree by one Embodiment. 一実施形態による達成度の判定方法の説明図。Explanatory drawing of the determination method of the achievement degree by one Embodiment. 一実施形態による達成度の判定方法の説明図。Explanatory drawing of the determination method of the achievement degree by one Embodiment. 一実施形態による達成度の判定処理のフローチャート。5 is a flowchart of achievement level determination processing according to an embodiment.

以下、本発明の例示的な実施形態について図面を参照して説明する。なお、以下の実施形態は例示であり、本発明を実施形態の内容に限定するものではない。また、以下の各図においては、実施形態の説明に必要ではない構成要素については図から省略する。 Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings. The following embodiments are exemplifications, and the present invention is not limited to the contents of the embodiments. Further, in each of the following drawings, components that are not necessary for explaining the embodiment are omitted from the drawings.

<第一実施形態>
図1(A)及び図1(B)は、本実施形態による滅菌レベルの判定装置1の側面図及び正面図である。また、図1(C)は、図1(B)のA−A線の断面図である。判定装置1は、CI2の挿入部4と、挿入部4に挿入されたCI2を下流側の測定位置に搬送する搬送ローラ対6と、を有する。図1(A)に示す様に、測定者が挿入部4からCI2を挿入すると、搬送ローラ対6は、CI2を、図1(C)の実線で示す測定位置に搬送する。測定位置の対向側には分光計3が配置されている。分光計3は、CI2の表面に光7を照射し、その反射光を受光することで、CI2の変色領域の分光反射率を測定する。測定後、搬送ローラ対6の逆回転により、CI2は、判定装置1から排出される。制御部8は、判定装置1を制御する。制御部8は、滅菌処理の達成度の判定に使用する種々の情報を保持する記憶部9と、各種の演算処理等を行う演算処理部10と、を有する。演算処理部10は、分光計3が測定した分光反射率に基づき変色領域の色値を判定する。さらに、演算処理部10は、変色領域の色値に基づき滅菌処理の達成度を判定する。また、判定装置1は、表示部5を有する。制御部8は、滅菌処理の達成度の判定結果を表示部5に表示する。
<First embodiment>
1A and 1B are a side view and a front view of a sterilization level determination device 1 according to the present embodiment. Further, FIG. 1C is a cross-sectional view taken along line AA of FIG. The determination device 1 includes an insertion portion 4 of the CI 2 and a pair of conveyance rollers 6 that conveys the CI 2 inserted in the insertion portion 4 to a downstream measurement position. As shown in FIG. 1(A), when the measurer inserts CI2 from the insertion section 4, the conveyance roller pair 6 conveys CI2 to the measurement position shown by the solid line in FIG. 1(C). The spectrometer 3 is arranged on the opposite side of the measurement position. The spectrometer 3 irradiates the surface of the CI 2 with the light 7 and receives the reflected light to measure the spectral reflectance of the CI 2 in the discolored region. After the measurement, the CI 2 is ejected from the determination device 1 by the reverse rotation of the transport roller pair 6. The control unit 8 controls the determination device 1. The control unit 8 has a storage unit 9 that holds various information used to determine the degree of achievement of the sterilization process, and an arithmetic processing unit 10 that performs various arithmetic processes. The arithmetic processing unit 10 determines the color value of the color change area based on the spectral reflectance measured by the spectrometer 3. Further, the arithmetic processing unit 10 determines the degree of achievement of the sterilization process based on the color value of the discolored area. The determination device 1 also includes a display unit 5. The control unit 8 displays the determination result of the degree of achievement of the sterilization process on the display unit 5.

図2は、本実施形態によるCI2を示している。CI2は、シート状の試験紙であり、表面に化学的処理が施された変色領域21を有する。変色領域21は、滅菌処理の達成度に応じてその色が変化する。本実施形態において、CI2の変色領域21は、初期状態において色値C#1であり、滅菌処理の達成度に応じて色値C#2〜色値C#9へと変化し、最終的には色値C#10で一定となる様に構成されているものとする。なお、変色領域21は、色値C#1〜色値C#10へと連続的に変化する。つまり、変色領域は、色値C#1〜色値#10以外の色値も取り得る。以下の説明において、色値C#k(kは1から10までの整数)となるときの条件達成度を達成度#kとする。図3は、各達成度#1〜#10における変色領域21の色値C#1〜C#10をL*a*b*色空間の座標として示したものである。なお、図3には、判定装置1が測定したCI2の変色領域21の測定色値Ctの当該色空間における座標も示している。 FIG. 2 shows a CI 2 according to this embodiment. CI2 is a sheet-shaped test paper, and has a discolored area 21 whose surface is chemically treated. The color of the discolored area 21 changes according to the degree of achievement of the sterilization process. In the present embodiment, the color change area 21 of CI2 has the color value C#1 in the initial state, changes from the color value C#2 to the color value C#9 according to the degree of achievement of the sterilization process, and finally, Is configured to be constant with the color value C#10. The color change area 21 continuously changes from the color value C#1 to the color value C#10. That is, the discolored area can have color values other than the color values C#1 to #10. In the following description, the condition achievement level when the color value is C#k (k is an integer from 1 to 10) is defined as the achievement level #k. FIG. 3 shows the color values C#1 to C#10 of the color changing area 21 at the respective achievement levels #1 to #10 as coordinates in the L*a*b* color space. Note that FIG. 3 also shows the coordinates of the measured color value Ct of the color change area 21 of CI 2 measured by the determination device 1 in the color space.

以下の説明において、達成度#1〜#10に対応する色値C#1〜C#10を基準色値と呼ぶものとする。また、色空間において、基準色値C#m(mは1から9までの整数)と基準色値C#m+1とを結ぶ線分を線分Lm(m+1)と表記する。本実施形態では、線分Lm(m+1)上に、予め境界点Tm(m+1)を設定する。さらに、以下の説明において、基準色値C#kと、測定色値Ctとの色差をΔEkと表記する。また、以下の説明において、色値を単に色とも表現する。 In the following description, the color values C#1 to C#10 corresponding to the achievement levels #1 to #10 will be referred to as reference color values. In the color space, a line segment connecting the reference color value C#m (m is an integer from 1 to 9) and the reference color value C#m+1 is expressed as a line segment Lm(m+1). In the present embodiment, the boundary point Tm(m+1) is set in advance on the line segment Lm(m+1). Further, in the following description, the color difference between the reference color value C#k and the measured color value Ct is expressed as ΔEk. Further, in the following description, the color value is also simply expressed as a color.

本実施形態において、制御部8は、測定色Ctとの色差が一番小さい基準色を判定する。以下の説明において、測定色Ctとの色差が一番小さい基準色を第1選択基準色と呼び、第1選択基準色に対応する達成度を第1選択達成度と呼ぶものとする。続いて、制御部8は、第1選択達成度に隣接する達成度が2つであるか1つであるかを判定する。第1選択達成度に隣接する達成度が1つになるのは、第1選択達成度が達成度#1や達成度#10のときのみである。制御部8は、第1選択達成度に隣接する達成度が1つであると、この隣接する達成度を第2選択達成度とする。一方、制御部8は、第1選択達成度に隣接する達成度が2つの場合、当該2つの達成度に対応する基準色の内、測定色Ctとの色差がより小さい基準色に対応する達成度を第2選択達成度とする。なお、以下の説明において第2選択達成度に対応する基準色を第2選択基準色と呼ぶものとする。図3においては、基準色C#8が第1選択基準色であり、基準色C#7が第2選択基準色である。なお、以下の説明においては、第1選択基準色と第2選択基準色とを纏めて選択基準色と呼び、第1選択達成度と第2選択達成度を纏めて選択達成度と呼ぶものとする。さらに、以下の説明においては、選択基準色間の線分を選択線分と呼び、選択線分上に設定した境界点を選択境界点と呼ぶものとする。 In the present embodiment, the control unit 8 determines the reference color having the smallest color difference from the measurement color Ct. In the following description, the reference color having the smallest color difference from the measured color Ct is referred to as the first selection reference color, and the achievement level corresponding to the first selection reference color is referred to as the first selection achievement level. Subsequently, the control unit 8 determines whether the achievement level adjacent to the first selection achievement level is two or one. The achievement level adjacent to the first selection achievement level becomes one only when the first selection achievement level is the achievement level #1 or the achievement level #10. When the achievement level adjacent to the first selection achievement level is one, the control unit 8 sets the adjacent achievement level as the second selection achievement level. On the other hand, when there are two achievement levels adjacent to the first selection achievement level, the control unit 8 achieves one of the reference colors corresponding to the two achievement levels that corresponds to the reference color having a smaller color difference from the measurement color Ct. The degree is defined as the degree of achievement of the second selection. In the following description, the reference color corresponding to the degree of achievement of the second selection will be referred to as the second selection reference color. In FIG. 3, the reference color C#8 is the first selection reference color and the reference color C#7 is the second selection reference color. In the following description, the first selection reference color and the second selection reference color are collectively referred to as a selection reference color, and the first selection achievement degree and the second selection achievement degree are collectively referred to as a selection achievement degree. To do. Further, in the following description, the line segment between the selection reference colors will be referred to as a selection line segment, and the boundary point set on the selection line segment will be referred to as a selection boundary point.

以下、測定色Ctに基づき、滅菌処理の達成度をどの様に判定するかについて説明する。以下の説明は、図3に示す色空間を前提とし、以下の説明における基準色C#1〜C#10、測定色Ct、及び、交点等は、当該色空間における一点、つまり、座標と同様の意味で使用する。 Hereinafter, how to determine the degree of achievement of the sterilization process based on the measured color Ct will be described. The following description is based on the color space shown in FIG. 3, and the reference colors C#1 to C#10, the measurement color Ct, and the intersections in the following description are the same as one point in the color space, that is, the coordinates. Used in the sense of.

まず、本実施形態では、図4に示す様に、選択線分L78と、測定色Ctから選択線分L78に引いた垂線Oとの交点Mを求める。そして、本実施形態では、図4に示す様に、交点Mが、選択境界点T78と選択基準色C#8との間にあると、測定色Ctに基づく滅菌処理の達成度を達成度#8と判定する。一方、図5に示す様に、交点Mが、選択境界点T78と選択基準色C#7との間にあると、測定色Ctに基づく滅菌処理の達成度を達成度#7と判定する。 First, in the present embodiment, as shown in FIG. 4, an intersection M of the selection line segment L78 and the perpendicular O drawn from the measurement color Ct to the selection line segment L78 is obtained. Then, in the present embodiment, as shown in FIG. 4, when the intersection point M is between the selection boundary point T78 and the selection reference color C#8, the achievement level of the sterilization process based on the measurement color Ct is calculated as the achievement level # Determined as 8. On the other hand, as shown in FIG. 5, when the intersection point M is between the selection boundary point T78 and the selection reference color C#7, the achievement level of the sterilization process based on the measurement color Ct is determined to be the achievement level #7.

各線分Lm(m+1)上の境界点Tm(m+1)の位置は、事前の実験等により、達成度の判定結果が実際の達成度に近くなる様に決定する。この構成により、試験紙の変色領域21の色の達成度による変化がどの様なものであっても、例えば、色空間において、達成度に応じて線形的に変化しない場合であっても、達成度を精度良く判定することができる。 The position of the boundary point Tm(m+1) on each line segment Lm(m+1) is determined by a preliminary experiment or the like so that the achievement level determination result is close to the actual achievement level. With this configuration, it is possible to achieve any change in the color of the discoloration area 21 of the test paper depending on the achievement level, for example, even if the color space does not change linearly according to the achievement level. The degree can be accurately determined.

なお、図4及び図5は、選択線分と、測定色Ctから選択線分への垂線Oとの交点が、選択線分内に存在する場合を示している。しかしながら、測定色Ctと2つの選択基準色を頂点とする三角形の、第1選択基準色に対応する頂点の内角が鈍角、つまり、90度より大きいと、測定色Ctから引いた選択線分と直交する垂線Oは、選択線分の外側になり、選択線分と交点Mを持たなくなる。図6は、その様な状態を示している。図6において、測定色Ctから引いた選択線分L34に直交する垂線Oは、選択線分L34と交点を持たない。この場合、測定色Ctに対応する達成度は、達成度#4を超えていると判定できる。このため、本実施形態では、選択基準色を基準色C#4及びC#5に変更し、図7に示す様に、選択線分L45と、測定色Ctから選択線分L45に引いた垂線Oとの交点Mを求める。そして、上述した様に、選択境界点T45と、交点Mとの位置関係に基づき、滅菌処理の達成度を判定する。図7の例において、交点Mは、選択境界点T45と、選択基準色C#4との間にあるため、達成度は達成度#4となる。 4 and 5 show the case where the intersection of the selection line segment and the perpendicular line O from the measurement color Ct to the selection line segment exists in the selection line segment. However, if the interior angle of the vertex corresponding to the first selection reference color of the triangle having the measurement color Ct and the two selection reference colors as vertices is an obtuse angle, that is, greater than 90 degrees, the selection line segment drawn from the measurement color Ct The perpendicular line O orthogonal to each other is located outside the selection line segment and has no intersection M with the selection line segment. FIG. 6 shows such a state. In FIG. 6, the perpendicular line O orthogonal to the selection line segment L34 drawn from the measurement color Ct does not have an intersection with the selection line segment L34. In this case, it can be determined that the achievement level corresponding to the measurement color Ct exceeds the achievement level #4. Therefore, in the present embodiment, the selection reference color is changed to the reference colors C#4 and C#5, and as shown in FIG. 7, the selection line segment L45 and the perpendicular line drawn from the measurement color Ct to the selection line segment L45. Find the intersection M with O. Then, as described above, the degree of achievement of the sterilization process is determined based on the positional relationship between the selected boundary point T45 and the intersection point M. In the example of FIG. 7, since the intersection M is between the selection boundary point T45 and the selection reference color C#4, the achievement level is the achievement level #4.

なお、図6では、2つの選択達成度の内、第1選択達成度が第2選択達成度より高いため、第1選択達成度の次に達成度の高い達成度#5を新たな第2選択達成度としていた。しかしながら、2つの選択達成度の内、第1選択達成度が第2選択達成度より低い場合、第1選択達成度の次に達成度の低い達成度を新たな第2選択達成度とする。例えば、第1選択達成度が達成度#3であり、第2選択達成度が達成度#4であり、第1選択基準色C#3に対応する内角が鈍角であるものとする。この場合、第1選択基準色C#3に対応する達成度#3に隣接する達成度であって、第2選択基準色C#4に対応する達成度#4とは逆側の達成度#2に対応する基準色C#2が新たな選択基準色となる。 In FIG. 6, the first selection achievement is higher than the second selection achievement out of the two selection achievements. Therefore, the achievement #5 having the highest achievement next to the first selection achievement is changed to the new second achievement. It was the degree of achievement of selection. However, of the two selection achievement levels, when the first selection achievement level is lower than the second selection achievement level, the achievement level next to the first selection achievement level is set as the new second selection achievement level. For example, it is assumed that the first selection achievement level is the achievement level #3, the second selection achievement level is the achievement level #4, and the interior angle corresponding to the first selection reference color C#3 is an obtuse angle. In this case, the achievement level adjacent to the achievement level #3 corresponding to the first selection reference color C#3 and on the opposite side to the achievement level #4 corresponding to the second selection reference color C#4 # The reference color C#2 corresponding to 2 becomes a new selection reference color.

なお、第1選択達成度が達成度#1であり、第1選択基準色に対応する頂点が鈍角である場合、達成度#1より低い達成度は存在しない。この場合、制御部8は、滅菌処理の達成度を、第1選択達成度と判定する。同様に、第1選択達成度が達成度#10であり、第1選択基準色に対応する頂点が鈍角であっても、達成度#10より高い達成度は存在しない。この場合も、制御部8は、滅菌処理の達成度を、第1選択達成度と判定する。さらに、図8に示す様な場合、選択線分が線分L34であっても、線分L45であっても、測定色Ctから引いた選択線分と直交する線Oは、選択線分と交点を持たない。この場合も、制御部8は、滅菌処理の達成度を、測定色Ctとの色差が最も小さい第1選択基準色C#4に対応する達成度#4と判定する。 If the first selection achievement level is the achievement level #1 and the vertex corresponding to the first selection reference color is an obtuse angle, there is no achievement level lower than the achievement level #1. In this case, the control unit 8 determines the achievement level of the sterilization process as the first selection achievement level. Similarly, even if the first selection achievement level is the achievement level #10 and the vertex corresponding to the first selection reference color is an obtuse angle, there is no achievement level higher than the achievement level #10. In this case as well, the control unit 8 determines that the degree of achievement of the sterilization process is the degree of achievement of the first selection. Further, in the case as shown in FIG. 8, whether the selected line segment is the line segment L34 or the line segment L45, the line O orthogonal to the selected line segment drawn from the measurement color Ct is the selected line segment. It has no intersection. In this case also, the control unit 8 determines the achievement level of the sterilization process to be the achievement level #4 corresponding to the first selection reference color C#4 having the smallest color difference from the measurement color Ct.

なお、測定色Ctが、選択基準色を結ぶ選択線分上にある場合には、測定色Ctの座標を交点Mとして判定する。図9は、その様な場合の例であり、測定色Ctは、選択線分L89上にある。図9の例において、測定色Ctは、選択基準色C#8と選択境界点T89との間にあるため、滅菌処理の達成度は、達成度#8と判定される。 When the measurement color Ct is on the selection line segment connecting the selection reference colors, the coordinates of the measurement color Ct are determined as the intersection point M. FIG. 9 shows an example of such a case, and the measurement color Ct is on the selection line segment L89. In the example of FIG. 9, since the measurement color Ct is between the selection reference color C#8 and the selection boundary point T89, the achievement level of the sterilization process is determined to be the achievement level #8.

図10は、本実施形態による滅菌処理の達成度を判定する処理のフローチャートである。S10で、制御部8は、分光計3の測定結果に基づきCI2の変色領域21の色を判定して測定色Ctを取得する。S11で、制御部8は、各基準色と測定色との色差に基づき第1選択基準色と第2選択基準色の2つの選択基準色を選択する。S12で、制御部8は、選択基準色間の線分である選択線分と、測定色Ctから引いた当該選択線分に直交する線とが交点Mを持つか否かを判定する。なお、測定色Ctが選択線分上にある場合、測定色Ctの座標を交点Mと判定する。交点Mを持つ場合、制御部8は、S16で、選択線分上の選択境界点と交点Mとの位置関係に基づき滅菌処理の達成度を判定する。一方、S12で、交点Mを持たない場合、制御部8は、S13で、第2選択基準色を変更する。具体的には、第1選択達成度に隣接し、かつ、現在の第2選択達成度とは第1選択達成度に対して逆側となる達成度に対応する基準色を新たな第2選択基準色とする。 FIG. 10 is a flowchart of a process for determining the degree of achievement of the sterilization process according to this embodiment. In S10, the control unit 8 determines the color of the color change area 21 of CI2 based on the measurement result of the spectrometer 3 and acquires the measurement color Ct. In S11, the control unit 8 selects two selection reference colors of the first selection reference color and the second selection reference color based on the color difference between each reference color and the measurement color. In S12, the control unit 8 determines whether or not the selection line segment that is the line segment between the selection reference colors and the line that is orthogonal to the selection line segment that is drawn from the measurement color Ct have the intersection point M. When the measurement color Ct is on the selected line segment, the coordinate of the measurement color Ct is determined as the intersection point M. When the intersection point M exists, the control unit 8 determines the degree of achievement of the sterilization process based on the positional relationship between the selection boundary point on the selection line segment and the intersection point M in S16. On the other hand, if there is no intersection M in S12, the control unit 8 changes the second selection reference color in S13. Specifically, a reference color corresponding to the achievement level adjacent to the first selection achievement level and on the opposite side of the current second selection achievement level from the current second selection achievement level is newly selected as the second selection color. Use as the standard color.

S14で、制御部8は、選択線分と、測定色Ctから引いた当該選択線分に直交する線とが交点Mを持つか否かを判定する。交点Mを持つ場合、制御部8は、S16で、選択線分上の選択境界点と交点Mとの位置関係に基づき滅菌処理の達成度を判定する。一方、交点Mを持たない場合、制御部8は、S15で、滅菌処理の達成度を第1選択基準色に対応する第1選択達成度であると判定する。 In S14, the control unit 8 determines whether or not the selected line segment and the line drawn from the measurement color Ct and orthogonal to the selected line segment have an intersection point M. When the intersection point M exists, the control unit 8 determines the degree of achievement of the sterilization process based on the positional relationship between the selection boundary point on the selection line segment and the intersection point M in S16. On the other hand, when there is no intersection M, the control unit 8 determines in S15 that the achievement level of the sterilization process is the first selection achievement level corresponding to the first selection reference color.

なお、境界点Tm(m+1)の位置は、線分Lm(m+1)上の任意の位置に設定できる。例えば、境界点Tm(m+1)の位置は、2つの選択基準色の一方の基準色C#m+1と同じ位置とすることもできる。この構成により、測定色Ctの位置を選択線分上に投影した位置(交点M)が、基準色C#m+1と同じではない限り、達成度#mと判定されることになる。同様に、境界点Tm(m+1)の位置は、2つの選択基準色の他方の基準色C#mと同じ位置とすることもできる。なお、交点Mと境界点Tm(m+1)の位置が同じであると、滅菌処理の達成度を達成度#mと判定する構成とすることも、達成度#m+1と判定する構成とすることもできる。 The position of the boundary point Tm(m+1) can be set to any position on the line segment Lm(m+1). For example, the position of the boundary point Tm(m+1) may be the same position as the reference color C#m+1 of the two selection reference colors. With this configuration, unless the position (intersection M) obtained by projecting the position of the measurement color Ct on the selection line segment is the same as the reference color C#m+1, the achievement level #m is determined. Similarly, the position of the boundary point Tm(m+1) can be the same position as the other reference color C#m of the two selection reference colors. When the position of the intersection point M and the boundary point Tm(m+1) are the same, the achievement level of the sterilization process may be determined as the achievement level #m, or the achievement level #m+1 may be determined. it can.

以上、複数の達成度に対応する複数の基準色を設定し、色空間において、隣接する2つの達成度に対応する基準色を結ぶ線分上に境界点(閾値)を設定する。そして、測定色Ctとの色差に基づき2つの選択基準色を選択し、この選択基準色間を結ぶ選択線分上の境界点と、測定色Ctとの位置関係に基づき滅菌処理の達成度を判定する。この構成により、滅菌処理の達成度による、所定の表色系の色空間における変色領域21の色の変化の軌跡に拘わらず、境界点を適切に設定することで精度良く、滅菌処理の達成度を判定することができる。つまり、滅菌処理の達成度による変色領域21の色の変化は、CI2の種別により異なり得るが、本実施形態による判定装置1は、境界点の設定を変更するのみで、CI2の種別に拘わらず、精度良く、滅菌処理の達成度を判定することができる。 As described above, a plurality of reference colors corresponding to a plurality of achievement levels are set, and a boundary point (threshold value) is set on a line segment connecting the reference colors corresponding to two adjacent achievement levels in the color space. Then, two selection reference colors are selected based on the color difference from the measurement color Ct, and the achievement level of the sterilization process is determined based on the positional relationship between the measurement color Ct and the boundary point on the selection line segment connecting the selection reference colors. judge. With this configuration, regardless of the locus of the color change of the discoloration area 21 in the color space of the predetermined color system depending on the degree of achievement of the sterilization process, the boundary points are appropriately set to accurately and accurately achieve Can be determined. That is, the change in color of the discolored area 21 depending on the degree of achievement of the sterilization process may differ depending on the type of CI2, but the determination device 1 according to the present embodiment only changes the setting of the boundary point, regardless of the type of CI2. Therefore, the degree of achievement of the sterilization process can be accurately determined.

<CIについて>
図2に示す様に、上記各実施形態において、CI2は、下地とは異なる色の方形状の変色領域21を有し、この変色領域21の色が滅菌処理の達成度に応じて変化するものであった。なお、変色領域21の色とは、透明を含む。つまり、変色領域21が初期的には透明であり、滅菌処理の達成度に応じて色が現れる様な場合も本発明における変色領域21の"変色"又は"色の変化"に含まれる。同様に、変色領域21が初期的には透明ではないが、滅菌処理の達成度に応じて変色領域21が透明となる様な場合も本発明における変色領域21の"変色"又は"色の変化"に含まれる。さらに、下地部分が透明であっても良い。
<About CI>
As shown in FIG. 2, in each of the above-described embodiments, the CI 2 has a square-shaped color changing region 21 having a color different from that of the base, and the color of the color changing region 21 changes according to the degree of achievement of the sterilization process. Met. The color of the discolored area 21 includes transparency. That is, the case where the discolored area 21 is initially transparent and a color appears depending on the degree of achievement of the sterilization treatment is also included in the "discolored" or "color change" of the discolored area 21 in the present invention. Similarly, in the case where the discolored area 21 is not initially transparent, but the discolored area 21 becomes transparent depending on the degree of achievement of the sterilization process, the "discolored" or "color change" of the discolored area 21 in the present invention. "include. Further, the base portion may be transparent.

また、例えば、変色領域21の色は、初期的には下地の色と同じであっても良い。さらに、滅菌処理の達成度に応じて変色領域21の全体が一様に変色する必要はない。例えば、変色領域21全体が初期的には下地の色と同じであり、滅菌処理の達成度に応じた長さ部分が下地とは異なる色に変化しても良い。なお、初期的には変色領域21が下地の色とは異なる部分を有し、滅菌処理の達成度に応じて下地の色とは異なる部分の長さが長くなる形態であっても良い。逆に、滅菌処理の達成度が高くなるにつれて、下地の色とは異なる部分の長さが短くなる形態であっても良い。 Further, for example, the color of the discolored area 21 may be initially the same as the background color. Furthermore, it is not necessary for the entire discolored area 21 to discolor uniformly depending on the degree of achievement of the sterilization process. For example, the entire discolored area 21 may initially be the same as the background color, and the length portion depending on the degree of achievement of sterilization may be changed to a color different from the background. Note that the discolored area 21 may initially have a portion different from the background color, and the length of the portion different from the background color may be longer depending on the degree of achievement of the sterilization process. On the contrary, as the degree of achievement of the sterilization treatment becomes higher, the length of the portion different from the background color may become shorter.

<その他の実施形態>
なお、上記実施形態においては、1つの判定装置1内でCI2の変色領域21の測色と、滅菌処理の達成度の判定の両方を行った。しかしながら、変色領域21の色値を測定する測定装置と、滅菌処理の達成度を判定する判定装置とを個別の装置とすることもできる。この場合、測定装置と判定装置とは、有線又は無線により接続され、相互に通信可能な様に構成される。或いは、測定装置と判定装置は、ネットワークを介して通信可能な様に構成される。つまり、本発明は、相互に通信できる測定装置と判定装置とを含む判定システムとして実現することができる。判定システムは、1つ以上の測定装置と、判定装置とを含むものとすることができる。例えば、測定装置は、分光計3を有し、CI2の変色領域21を測定して色値を判定し、判定した色値を判定装置に出力する。判定装置は、複数の達成度に対応する複数の基準色値と、隣接する2つの達成度の組それぞれの閾値を有し、取得した色値に基づき滅菌処理の達成度を判定する。なお、測定装置が、色値を判定するのではなく、例えば、変色領域21の分光反射率といった色値を判定するための情報を測定して判定装置に出力し、判定装置が色値を判定する構成であっても良い。なお、判定装置のハードウェアには、汎用のコンピュータを使用することができる。つまり、コンピュータの1つ以上のプロセッサに適切なプログラムを実行させることで、判定装置を実現することができる。さらに、本発明は、判定方法として実現することもできる。
<Other embodiments>
In the above embodiment, both the color measurement of the discolored area 21 of the CI 2 and the determination of the degree of achievement of the sterilization process were performed in one determination device 1. However, the measuring device that measures the color value of the discolored area 21 and the determining device that determines the degree of achievement of the sterilization process may be separate devices. In this case, the measurement device and the determination device are connected by wire or wirelessly so that they can communicate with each other. Alternatively, the measuring device and the determining device are configured to be communicable via a network. That is, the present invention can be realized as a determination system including a measurement device and a determination device that can communicate with each other. The determination system can include one or more measurement devices and a determination device. For example, the measuring device has the spectrometer 3, measures the color change area 21 of the CI 2 to judge the color value, and outputs the judged color value to the judging device. The determination device has a plurality of reference color values corresponding to the plurality of achievement levels and thresholds of two adjacent sets of achievement levels, and determines the achievement level of the sterilization process based on the acquired color values. The measuring device does not determine the color value, but measures the information for determining the color value, such as the spectral reflectance of the discolored area 21, and outputs the information to the determining device, and the determining device determines the color value. It may be configured to do so. A general-purpose computer can be used as the hardware of the determination device. That is, the determination device can be realized by causing one or more processors of the computer to execute an appropriate program. Furthermore, the present invention can be realized as a determination method.

また、上記各実施形態では、滅菌処理の達成度を判定する判定装置を例にして本発明の説明を行った。しかしながら、本発明は、処理の達成度に応じて色が変化する変色領域を有する試験紙が用いられる任意の処理の達成度の判定に対して適用することができる。 Further, in each of the above-described embodiments, the present invention has been described by taking the determination device that determines the degree of achievement of the sterilization process as an example. However, the present invention can be applied to the determination of the degree of achievement of any treatment in which a test paper having a discolored area whose color changes according to the degree of achievement of treatment is used.

本発明は、上述の実施形態の1以上の機能を実現するプログラムを、ネットワーク又は記憶媒体を介してシステム又は装置に供給し、そのシステム又は装置のコンピュータにおける1つ以上のプロセッサがプログラムを読出し実行する処理でも実現可能である。また、1以上の機能を実現する回路(例えば、ASIC)によっても実現可能である。 The present invention supplies a program that implements one or more functions of the above-described embodiments to a system or apparatus via a network or a storage medium, and one or more processors in a computer of the system or apparatus read and execute the program. It can also be realized by the processing. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

3:分光計、9:記憶部、10:演算処理部 3: spectrometer, 9: storage unit, 10: arithmetic processing unit

Claims (20)

所定の処理の達成度に応じて色が変化する変色領域を有する試験紙により前記所定の処理の達成度を判定する判定装置であって、
前記試験紙の前記変色領域の色値を測定する測定手段と、
前記所定の処理の複数の達成度に対応する前記変色領域の複数の色を示す複数の基準色値と、前記複数の達成度の隣接する2つの達成度の組それぞれに対応する閾値を保持する保持手段と、
前記測定手段が測定した前記試験紙の前記変色領域の測定色値と、前記複数の基準色値と、前記複数の達成度の隣接する2つの達成度の組それぞれに対応する閾値と、に基づき、前記所定の処理の達成度を判定する判定手段と、
を備えることを特徴とする判定装置。
A determination device for determining the degree of achievement of the predetermined processing by a test paper having a color-changing area in which the color changes in accordance with the degree of achievement of the predetermined processing,
Measuring means for measuring the color value of the discolored area of the test paper,
A plurality of reference color values indicating a plurality of colors of the discolored area corresponding to a plurality of achievement levels of the predetermined process and a threshold value corresponding to each pair of two neighboring achievement levels of the plurality of achievement levels are held. Holding means,
Based on the measured color value of the discolored area of the test paper measured by the measuring means, the plurality of reference color values, and a threshold value corresponding to each of two adjacent achievement levels of the plurality of achievement levels, A determining means for determining the degree of achievement of the predetermined process,
A determination device comprising:
前記測定手段が測定する色値の色空間において、前記隣接する2つの達成度の組に対応する閾値は、前記隣接する2つの達成度の一方の達成度に対応する基準色値と、前記隣接する2つの達成度の他方の達成度に対応する基準色値とを結ぶ線分上にあることを特徴とする請求項1に記載の判定装置。 In the color space of the color values measured by the measuring unit, the threshold value corresponding to the pair of two adjacent achievement levels is the reference color value corresponding to the achievement level of one of the two adjacent achievement levels, and the adjacent color value. The determination device according to claim 1, wherein the determination device is on a line segment that connects the two achievement levels to the reference color value corresponding to the other achievement level. 前記色空間において、前記隣接する2つの達成度の組に対応する閾値は、前記隣接する2つの達成度の一方の達成度に対応する基準色値、又は、前記隣接する2つの達成度の他方の達成度に対応する基準色値の位置にあることを特徴とする請求項2に記載の判定装置。 In the color space, the threshold value corresponding to the pair of two adjacent achievement levels is a reference color value corresponding to the achievement level of one of the two adjacent achievement levels, or the other of the two adjacent achievement levels. The determination device according to claim 2, wherein the determination device is located at the position of the reference color value corresponding to the achievement level of. 前記判定手段は、前記複数の基準色値のうち、前記測定色値との色差が最も小さい第1基準色値を判定し、前記第1基準色値に対応する第1達成度に隣接する達成度が2つの場合、当該2つの達成度に対応する基準色値の内、前記測定色値との色差がより小さい第2基準色値を判定し、前記色空間において、前記第1基準色値と前記第2基準色値とを結ぶ第1線分に直交し、かつ、前記測定色値を通る第1垂線が、前記第1線分との第1交点を有する場合、前記第1交点と、前記第1線分上の第1閾値とに基づき、前記所定の処理の達成度を判定することを特徴とする請求項2又は3に記載の判定装置。 The determination means determines, of the plurality of reference color values, a first reference color value having the smallest color difference from the measured color value, and an achievement that is adjacent to the first achievement level corresponding to the first reference color value. When the degree is 2, the second reference color value having a smaller color difference from the measured color value is determined from the reference color values corresponding to the two achievement degrees, and the first reference color value is determined in the color space. And a second perpendicular line connecting the second reference color value and a first perpendicular line passing through the measured color value have a first intersection point with the first line segment, the first intersection point is defined as the first intersection point. The determination device according to claim 2 or 3, wherein the achievement level of the predetermined process is determined based on the first threshold value on the first line segment. 前記判定手段は、前記第1達成度に隣接する達成度が1つの場合、当該1つの達成度に対応する基準色値を前記第2基準色値とすることを特徴とする請求項4に記載の判定装置。 The said determination means sets the reference color value corresponding to the said one achievement level as the said 2nd reference color value, when the one achievement level adjacent to the said 1st achievement level is one. Judgment device. 前記判定手段は、前記色空間において前記測定色値が前記第1線分上にあると、前記測定色値の位置を前記第1交点の位置と判定することを特徴とする請求項4又は5に記載の判定装置。 6. The determination unit determines that the position of the measurement color value is the position of the first intersection when the measurement color value is on the first line segment in the color space. The determination device described in 1. 前記判定手段は、前記第1交点が、前記第1基準色値と前記第1閾値との間にあると、前記所定の処理の達成度を、前記第1達成度と判定し、前記第1交点が、前記第2基準色値と前記第1閾値との間にあると、前記所定の処理の達成度を、前記第2基準色値に対応する第2達成度と判定することを特徴とする請求項4から6のいずれか1項に記載の判定装置。 When the first intersection is between the first reference color value and the first threshold value, the determining means determines the achievement level of the predetermined process as the first achievement level, and determines the first achievement level. When the intersection is between the second reference color value and the first threshold value, the achievement level of the predetermined process is determined as the second achievement level corresponding to the second reference color value. The determination device according to any one of claims 4 to 6. 前記判定手段は、前記第1垂線が前記第1線分との交点を有さない場合、前記第1達成度に隣接し、かつ、前記第1達成度に対して前記第2達成度とは逆側の第3達成度が存在するか否かを判定し、前記第3達成度が存在すると、前記色空間において、前記第3達成度に対応する第3基準色値と前記第1基準色値とを結ぶ第2線分に直交し、かつ、前記測定色値を通る第2垂線が、前記第2線分との交点を有するか否かを判定することを特徴とする請求項7に記載の判定装置。 When the first perpendicular does not have an intersection with the first line segment, the determining means is adjacent to the first achievement level and is different from the second achievement level with respect to the first achievement level. It is determined whether or not there is a third achievement level on the opposite side. When the third achievement level is present, the third reference color value and the first reference color corresponding to the third achievement level in the color space. 8. It is determined whether or not a second perpendicular line, which is orthogonal to a second line segment connecting the value and passes through the measured color value, has an intersection with the second line segment. The determination device described. 前記判定手段は、前記第2垂線が前記第2線分との交点を有さない場合、前記所定の処理の達成度を、前記第1達成度と判定することを特徴とする請求項8に記載の判定装置。 9. The determination means determines the achievement level of the predetermined process as the first achievement level when the second perpendicular does not have an intersection with the second line segment. The determination device described. 前記判定手段は、前記第2垂線が前記第2線分との第2交点を有する場合、前記第2交点と、前記第2線分上の第2閾値とに基づき、前記所定の処理の達成度を判定することを特徴とする請求項8又は9に記載の判定装置。 When the second perpendicular has a second intersection with the second line segment, the determination means achieves the predetermined process based on the second intersection and a second threshold value on the second line segment. The determination device according to claim 8, wherein the determination device determines the degree. 前記判定手段は、前記第2交点が、前記第1基準色値と前記第2閾値との間にあると、前記所定の処理の達成度を、前記第1達成度と判定し、前記第2交点が、前記第3基準色値と前記第2閾値との間にあると、前記所定の処理の達成度を、前記第3達成度と判定することを特徴とする請求項10に記載の判定装置。 When the second intersection is between the first reference color value and the second threshold value, the determining means determines the achievement level of the predetermined process as the first achievement level, and determines the second achievement level. 11. The determination according to claim 10, wherein when the intersection is between the third reference color value and the second threshold, the achievement level of the predetermined process is determined as the third achievement level. apparatus. 前記判定手段は、前記第3達成度が存在しない場合、前記所定の処理の達成度を、前記第1達成度と判定することを特徴とする請求項8から11のいずれか1項に記載の判定装置。 The said determination means determines the achievement degree of the said predetermined process as the said 1st achievement degree, when the said 3rd achievement degree does not exist, The any one of Claim 8 to 11 characterized by the above-mentioned. Judgment device. 所定の処理の達成度に応じて色が変化する変色領域の測定された測定色値に基づき前記所定の処理の達成度を判定する判定装置であって、
前記測定色値を示す情報を取得する取得手段と、
前記所定の処理の複数の達成度に対応する前記変色領域の複数の色を示す複数の基準色値と、前記複数の達成度の隣接する2つの達成度の組それぞれに対応する閾値を保持する保持手段と、
前記測定色値と、前記複数の基準色値と、前記複数の達成度の隣接する2つの達成度の組それぞれに対応する閾値とに基づき、前記所定の処理の達成度を判定する判定手段と、
を備えることを特徴とする判定装置。
A determination device for determining the degree of achievement of the predetermined processing based on the measured color value of the color-changed area in which the color changes according to the degree of achievement of the predetermined processing,
An acquisition unit that acquires information indicating the measured color value,
A plurality of reference color values indicating a plurality of colors of the discolored area corresponding to a plurality of achievement levels of the predetermined process and a threshold value corresponding to each pair of two neighboring achievement levels of the plurality of achievement levels are held. Holding means,
Determination means for determining the achievement level of the predetermined process based on the measured color value, the plurality of reference color values, and a threshold value corresponding to each of two adjacent achievement level groups of the plurality of achievement levels; ,
A determination device comprising:
前記測定色値の色空間において、前記隣接する2つの達成度の組に対応する閾値は、前記隣接する2つの達成度の一方の達成度に対応する基準色値と、前記隣接する2つの達成度の他方の達成度に対応する基準色値とを結ぶ線分上にあることを特徴とする請求項13に記載の判定装置。 In the color space of the measured color values, the threshold value corresponding to the pair of two adjacent achievement levels is a reference color value corresponding to one of the two adjacent achievement levels, and the two adjacent achievement levels. The determination device according to claim 13, wherein the determination device is on a line segment connecting a reference color value corresponding to the other achievement level of the degrees. 前記所定の処理は、滅菌処理であることを特徴とする請求項1から14のいずれか1項に記載の判定装置。 The determination device according to any one of claims 1 to 14, wherein the predetermined process is a sterilization process. 1つ以上のプロセッサを有する装置の前記1つ以上のプロセッサで実行されると、当該装置を請求項1から15のいずれか1項に記載の判定装置として機能させることを特徴とするプログラム。 A program that, when executed by the one or more processors of a device having one or more processors, causes the device to function as the determination device according to any one of claims 1 to 15. 所定の処理の達成度に応じて色が変化する変色領域を有する試験紙により前記所定の処理の達成度を判定する判定システムであって、
前記所定の処理の複数の達成度に対応する前記変色領域の複数の色を示す複数の基準色値と、前記複数の達成度の隣接する2つの達成度の組それぞれに対応する閾値を保持する保持手段と、
前記試験紙の前記変色領域の測定された測定色値と、前記複数の基準色値と、前記複数の達成度の隣接する2つの達成度の組それぞれに対応する閾値とに基づき、前記所定の処理の達成度を判定する判定手段と、
を備えることを特徴とする判定システム。
A determination system for determining the degree of achievement of the predetermined processing by a test paper having a color change area in which the color changes in accordance with the degree of achievement of the predetermined processing,
A plurality of reference color values indicating a plurality of colors of the discolored area corresponding to a plurality of achievement levels of the predetermined process and a threshold value corresponding to each pair of two neighboring achievement levels of the plurality of achievement levels are held. Holding means,
Based on the measured color values measured in the discolored area of the test paper, the plurality of reference color values, and the threshold values corresponding to each of two adjacent achievement levels of the plurality of achievement levels, the predetermined value is determined. Determination means for determining the degree of achievement of processing,
A determination system comprising:
前記試験紙の前記変色領域の色値を前記測定色値として測定する測定手段をさらに備えていることを特徴とする請求項17に記載の判定システム。 The determination system according to claim 17, further comprising a measuring unit that measures a color value of the color-changed area of the test paper as the measurement color value. 前記測定色値の色空間において、前記隣接する2つの達成度の組に対応する閾値は、前記隣接する2つの達成度の一方の達成度に対応する基準色値と、前記隣接する2つの達成度の他方の達成度に対応する基準色値とを結ぶ線分上にあることを特徴とする請求項17に記載の判定システム。 In the color space of the measured color values, the threshold value corresponding to the pair of two adjacent achievement levels is a reference color value corresponding to one of the two adjacent achievement levels, and the two adjacent achievement levels. The determination system according to claim 17, wherein the determination system is on a line segment connecting a reference color value corresponding to the other achievement level of the degrees. 所定の処理の達成度に応じて色が変化する変色領域を有する試験紙により前記所定の処理の達成度を判定する判定方法であって、
取得手段が、前記試験紙の前記変色領域の測定された測定色値を取得する取得ステップと、
判定手段が、前記所定の処理の複数の達成度に対応する前記変色領域の複数の色を示す複数の基準色値と、前記複数の達成度の隣接する2つの達成度の組それぞれに対応する閾値と、前記測定色値と、に基づき、前記所定の処理の達成度を判定する判定ステップと、
を含むことを特徴とする判定方法。
A determination method for determining the degree of achievement of the predetermined processing by a test paper having a color-changing area in which the color changes according to the degree of achievement of the predetermined processing,
An acquisition step in which the acquisition means acquires the measured color value measured in the discolored area of the test paper;
The determination means corresponds to each of a plurality of reference color values indicating a plurality of colors of the color-change area corresponding to a plurality of achievement levels of the predetermined process and two adjacent achievement levels of the plurality of achievement levels. Based on the threshold and the measured color value, a determination step of determining the degree of achievement of the predetermined processing,
A determination method comprising:
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