WO2021225026A1 - Graphique de test, système de contrôle et procédé de contrôle - Google Patents

Graphique de test, système de contrôle et procédé de contrôle Download PDF

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Publication number
WO2021225026A1
WO2021225026A1 PCT/JP2021/008526 JP2021008526W WO2021225026A1 WO 2021225026 A1 WO2021225026 A1 WO 2021225026A1 JP 2021008526 W JP2021008526 W JP 2021008526W WO 2021225026 A1 WO2021225026 A1 WO 2021225026A1
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WIPO (PCT)
Prior art keywords
inspection
measurement
light
chart
measurement light
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PCT/JP2021/008526
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English (en)
Japanese (ja)
Inventor
岳一 龍田
将人 吉岡
裕章 鈴木
Original Assignee
富士フイルム株式会社
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Application filed by 富士フイルム株式会社 filed Critical 富士フイルム株式会社
Priority to JP2022519899A priority Critical patent/JP7447249B2/ja
Publication of WO2021225026A1 publication Critical patent/WO2021225026A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes

Definitions

  • the present invention relates to a test chart, an inspection system, and an inspection method used for inspection of a measurement marker for measuring the size of a subject.
  • the distance to the subject or the size of the subject is acquired.
  • the subject is irradiated with illumination light and measurement light, and a beam irradiation region such as spot light is made to appear on the subject by irradiating the beam light.
  • a measurement marker for measuring the size of the subject is displayed on the subject image in correspondence with the position of the spot light.
  • the measurement marker Since the measurement marker is used to measure the size of the lesion, etc., it is necessary for the measurement marker to accurately display the size of the subject on the subject image. However, the position of the exiting part that emits the measurement light may vary depending on the endoscope, and the measurement marker accurately displays the size of the subject due to such variation in the position of the emitting part. There are things you can't do. Therefore, before using an endoscope using a measurement marker, it has been required to perform a confirmation inspection to confirm whether the display of the measurement marker is appropriate.
  • An object of the present invention is to provide a test chart, an inspection system, and an inspection method capable of performing a confirmation inspection of whether or not a measurement marker for measuring the size of a subject is properly displayed.
  • the present invention has an inspection area portion having an inspection area having a specific shape and a chart body provided with an inspection reference position in a test chart used for inspection related to a measurement marker for measuring the size of a subject.
  • the inspection area portion is used as an inspection image based on the irradiation position when the irradiation position of the measurement light is aligned with the inspection reference position in the inspection image obtained by imaging the chart body irradiated with the measurement light with an endoscope. It is used to confirm whether the displayed measurement marker is in the inspection area.
  • the chart body is provided with a plurality of inspection areas corresponding to the size of the measurement marker, and the confirmation inspection of each inspection area is divided into a plurality of inspection areas by changing the distance between the measurement light emission position and the chart body. It is preferably done.
  • the chart body preferably has a confirmation inspection assisting unit for assisting the confirmation inspection.
  • the specific shape is circular, and the plurality of inspection areas are concentrically provided around the inspection reference position, and the confirmation inspection auxiliary part extends radially from the inspection reference position and intersects the inspection reference position. It is preferably a radial line of.
  • the angular spacing of the radial lines is preferably equiangular spacing.
  • the radial lines are preferably line symmetric.
  • the test chart is provided with a plurality of inspection areas corresponding to the size of the measurement marker, and in the confirmation inspection of each inspection area, the distance between the emission position of the measurement light and the chart body is kept constant, and 1 It is preferably performed once. It is preferable that the specific shape is circular and the plurality of inspection areas share a specific point of each inspection area as an inspection reference position.
  • the plurality of inspection areas have different saturations from each other. It is preferable that the hue of the measurement light when the chart body is irradiated is the same as the hue of the measurement light when the subject is irradiated. It is preferable that the inspection area and the area other than the inspection area of the chart body have the same hue.
  • the width of the inspection area preferably has an error range corresponding to the size of the measurement marker.
  • the width of the inspection area is preferably increased as the size of the measurement marker is increased. It is preferable to have a chart identifier that can identify the type of the chart body.
  • the inspection system of the present invention displays a test chart having a chart body provided with an inspection reference position and an inspection image obtained by imaging the chart body irradiated with measurement light from an endoscope with an endoscope.
  • the chart body has an inspection area portion having an inspection region having a specific shape, and the inspection region portion is an irradiation position of the measurement light in an inspection image obtained by imaging the chart body irradiated with the measurement light with an endoscope. Is preferably used for confirmation inspection of whether or not the measurement marker displayed on the inspection image based on the irradiation position is in the inspection area when the is aligned with the inspection reference position.
  • the test chart is provided with a plurality of inspection areas corresponding to the size of the measurement marker, and the moving mechanism unit changes the distance between the measurement light emission position and the chart body for each confirmation inspection of each inspection area. It is preferable that the display displays a measurement marker corresponding to the distance each time the distance is changed, so that the confirmation inspection of each inspection area is divided into a plurality of parts.
  • the test chart is provided with a plurality of inspection areas corresponding to the size of the measurement marker, the moving mechanism unit keeps the distance between the measurement light emission position and the chart body constant, and the display has a plurality of display areas. It is preferable to perform the confirmation inspection of all the inspection areas at one time by displaying all the measurement markers corresponding to the inspection areas.
  • the measurement light is preferably spot light.
  • the measurement light is preferably a line-shaped measurement light.
  • the measurement light is preferably a pattern-shaped measurement light.
  • the measurement light is preferably three-dimensional plane light.
  • the present invention is a step of obtaining an inspection image by imaging a chart body irradiated with measurement light from an endoscope with an endoscope in an inspection method using a test chart having a chart body provided with an inspection reference position.
  • the measurement light is measured in the inspection image. It has a step of adjusting the irradiation position to the inspection reference position.
  • the present invention it is possible to perform a confirmation inspection as to whether or not a measurement marker for measuring the size of a subject is properly displayed.
  • FIG. 5 is an image diagram showing three concentric markers having the same color. It is an image diagram which shows three concentric markers of different colors. It is an image diagram which shows the distortion concentric marker.
  • the endoscope system 10 includes an endoscope 12, a light source device 14, a processor device 16, a display 18, and a user interface 20.
  • the endoscope 12 has an insertion portion 12a to be inserted into the subject, an operation portion 12b provided at the base end portion of the insertion portion 12a, and a universal cable 12c.
  • the universal cable 12c captures a light guide 28 (see FIG. 3) that guides the illumination light emitted by the light source device 14, a control line for transmitting a control signal used for controlling the endoscope 12, and an observation target.
  • This is a cable in which a signal line for transmitting the obtained image signal, a power line for supplying power to each part of the endoscope 12, and the like are integrated.
  • a connector 29 for connecting to the light source device 14 is provided at the tip of the universal cable 12c.
  • the light source device 14 generates illumination light by, for example, a semiconductor light source such as an LED (Light Emitting Diode) or an LD (Laser Diode), a xenon lamp, a halogen lamp, or the like.
  • a semiconductor light source such as an LED (Light Emitting Diode) or an LD (Laser Diode), a xenon lamp, a halogen lamp, or the like.
  • the connector 29 When the connector 29 is connected to the light source device 14, the illumination light enters the light guide 28 (see FIG. 3) of the connector 29 and is irradiated to the observation target from the tip of the insertion portion 12a.
  • the light source device 14 is electrically connected to the processor device 16, and the connector 29 of the endoscope 12 is connected to the processor device 16 via the light source device 14. Transmission and reception of control signals, image signals, etc. between the light source device 14 and the connector 29 is wireless communication. Therefore, the light source device 14 wirelessly transmits a control signal or the like transmitted / received to / from the connector 29 to the processor device 16. Further, the light source device 14 supplies electric power for driving the endoscope 12 to the connector 29, and this electric power is also supplied wirelessly.
  • the processor device 16 controls the amount of illumination light emitted by the light source device 14, the light emission timing, and each part of the endoscope 12, and uses an image signal obtained by imaging an observation target irradiated with the illumination light to obtain an endoscope image. To generate. Further, the processor device 16 is electrically connected to the display 18 and the user interface 20.
  • the display 18 displays an endoscopic image generated by the processor device 16, information about the endoscopic image, and the like.
  • the user interface 20 has a function of accepting input operations such as function settings.
  • the endoscope 12 includes a normal observation mode, a special light observation mode, a length measurement mode, and a calibration mode, and these three modes are mode switching provided in the operation unit 12b of the endoscope 12. It is switched by the switch 13a.
  • the normal observation mode is a mode in which the observation target is illuminated by the illumination light.
  • the special light observation mode is a mode in which the observation target is illuminated with special light different from the illumination light.
  • the illumination light and the measurement light are illuminated on the observation target, and a measurement marker used for measuring the size of the observation target and the like is displayed on the subject image obtained by imaging the observation target.
  • the calibration mode is a mode for confirming whether or not the display of the measurement marker is appropriate by using a test chart.
  • the illumination light is light used for observing the entire observation target by giving brightness to the entire observation target.
  • Special light is light used to emphasize a specific area such as a surface blood vessel in an observation target.
  • the measurement light is light used for displaying a measurement marker.
  • the operation unit 12b of the endoscope 12 is provided with a freeze switch 13b for operating a still image acquisition instruction for instructing acquisition of a still image of a subject image.
  • a freeze switch 13b for operating a still image acquisition instruction for instructing acquisition of a still image of a subject image.
  • the screen of the display 18 freezes, and at the same time, an alert sound (for example, "pee") indicating that a still image is acquired is emitted.
  • the still image of the subject image obtained before and after the operation timing of the freeze switch 13b is stored in the still image storage unit 42 (see FIG. 3) in the processor device 16.
  • the still image storage unit 42 is a storage unit such as a hard disk, a USB (Universal Serial Bus) memory, or a non-volatile memory.
  • the still image of the subject image is stored in the still image storage server (not shown) connected to the network in place of or in addition to the still image storage unit 42. You may.
  • the still image storage unit 42 is a non-volatile memory
  • the still image is temporarily stored in the still image storage unit 42, and then the still image is stored in a USB memory, a CF (CompactFlash) card, an image storage server on the network, or the like. May be transferred.
  • a still image acquisition instruction may be given using an operating device other than the freeze switch 13b.
  • a foot pedal may be connected to the processor device 16 to give a still image acquisition instruction when the user operates the foot pedal (not shown) with his / her foot. You may use the foot pedal for mode switching.
  • a gesture recognition unit (not shown) that recognizes the user's gesture is connected to the processor device 16, and when the gesture recognition unit recognizes a specific gesture performed by the user, a still image acquisition instruction is given. You may do it.
  • the mode switching may also be performed using the gesture recognition unit.
  • a line-of-sight input unit (not shown) provided near the display 18 is connected to the processor device 16, and the line-of-sight input unit recognizes that the user's line of sight is within a predetermined area of the display 18 for a certain period of time or longer. If this is the case, a still image acquisition instruction may be given.
  • a voice recognition unit (not shown) may be connected to the processor device 16 so that when the voice recognition unit recognizes a specific voice emitted by the user, a still image acquisition instruction may be given. The mode switching may also be performed using the voice recognition unit.
  • an operation panel such as a touch panel may be connected to the processor device 16 to give a still image acquisition instruction when the user performs a specific operation on the operation panel. The mode switching may also be performed using the operation panel.
  • the tip portion 12d of the endoscope 12 has a substantially circular shape, and an imaging optical system 21 that receives light from the subject and an illumination optical system that irradiates the subject with illumination light. 22, a beam light emitting unit 23 that radiates measurement light to the subject with respect to the subject, an opening 24 for projecting the treatment tool toward the subject, and an air supply water supply nozzle 25 for performing air supply and water supply. It is provided.
  • the optical axis Ax of the imaging optical system 21 extends in a direction perpendicular to the paper surface.
  • the vertical first direction D1 is orthogonal to the optical axis Ax
  • the horizontal second direction D2 is orthogonal to the optical axis Ax and the first direction D1.
  • the imaging optical system 21 and the beam light emitting unit 23 are provided at different positions of the tip portion 12d, respectively, and are arranged along the first direction D1.
  • the light source device 14 includes a light source unit 26 and a light source control unit 27.
  • the light source unit 26 generates illumination light or special light for illuminating the subject.
  • the illumination light or special light emitted from the light source unit 26 is incident on the light guide 28 and is applied to the subject through the illumination lens 22a.
  • the light source unit 26 includes, as a light source of illumination light, a white light source that emits white light, or a plurality of light sources including a white light source and a light source that emits light of other colors (for example, a blue light source that emits blue light). Is used.
  • the light source unit 26 as a light source of special light, a light source that emits wideband light including blue narrow band light for emphasizing surface layer information such as surface blood vessels is used.
  • the light source control unit 27 is connected to the system control unit 41 of the processor device 16.
  • the illumination light may be a white mixed color light in which blue light, green light, and red light are combined. In this case, it is preferable to design the illumination optical system 22 so that the irradiation range of green light is larger than the irradiation range of red light.
  • the light source control unit 27 controls the light source unit 26 based on an instruction from the system control unit 41.
  • the system control unit 41 gives an instruction regarding the light source control to the light source control unit 27, and also controls the light source 23a (see FIG. 5) of the beam light emitting unit 23.
  • the system control unit 41 controls to turn on the illumination light and turn off the measurement light.
  • the special light observation mode the special light is turned on and the measurement light is turned off.
  • the system control unit 41 turns on the illumination light and controls to turn on the measurement light.
  • the system control unit 41 controls to turn off the illumination light and turn on the measurement light.
  • the illumination optical system 22 has an illumination lens 22a, and the light from the light guide 28 is irradiated to the observation target through the illumination lens 22a.
  • the image pickup optical system 21 includes an objective lens 21a, a zoom lens 21b, and an image pickup element 32.
  • the reflected light from the observation target enters the image sensor 32 via the objective lens 21a and the zoom lens 21b. As a result, a reflected image to be observed is formed on the image sensor 32.
  • the zoom lens 21b has an optical zoom function for enlarging or reducing the subject as a zoom function by moving between the telephoto end and the wide end.
  • the optical zoom function can be switched on and off by the zoom operation unit 13c (see FIG. 1) provided in the operation unit 12b of the endoscope.
  • the zoom operation unit 13c When the optical zoom function is ON, the zoom operation unit is further turned on. By manipulating 13c, the subject is enlarged or reduced at a specific magnification.
  • the image sensor 32 is a color image sensor, which captures a reflected image of a subject and outputs an image signal.
  • the image sensor 32 is preferably a CCD (Charge Coupled Device) image sensor, a CMOS (Complementary Metal-Oxide Semiconductor) image sensor, or the like.
  • the image pickup device 32 used in the present invention is a color image pickup sensor for obtaining a red image, a green image, and a red image of three colors of R (red), G (green), and B (blue).
  • the red image is an image output from a red pixel provided with a red color filter in the image sensor 32.
  • the green image is an image output from a green pixel provided with a green color filter in the image sensor 32.
  • the blue image is an image output from a blue pixel provided with a blue color filter in the image sensor 32.
  • the image sensor 32 is controlled by the image pickup control unit 33.
  • the image signal output from the image sensor 32 is transmitted to the CDS / AGC circuit 34.
  • the CDS / AGC circuit 34 performs correlated double sampling (CDS (Correlated Double Sampling)) and automatic gain control (AGC (Auto Gain Control)) on an image signal which is an analog signal.
  • CDS Correlated Double Sampling
  • AGC Automatic gain control
  • the image signal that has passed through the CDS / AGC circuit 34 is converted into a digital image signal by the A / D converter (A / D (Analog / Digital) converter) 35.
  • the A / D converted digital image signal is input to the communication I / F (Interface) 37 of the light source device 14 via the communication I / F (Interface) 36.
  • the processor device 16 includes a receiving unit 38 connected to the communication I / F (Interface) 37 of the light source device 14, a signal processing unit 39, a display control unit 40, and a system control unit 41.
  • the communication I / F receives the image signal transmitted from the communication I / F 37 and transmits it to the signal processing unit 39.
  • the signal processing unit 39 has a built-in memory that temporarily stores an image signal received from the receiving unit 38, and processes an image signal group that is a set of image signals stored in the memory to generate a subject image.
  • the receiving unit 38 may directly send the control signal related to the light source control unit 27 to the system control unit 41.
  • the processing units related to the length measurement mode are length measurement processors (not shown) that are separate from the processor device 16. It may be provided in (not). In this case, the length measuring processor and the processor device 16 are kept in a state of being able to communicate with each other so that images or various information can be transmitted and received.
  • the signal processing unit 39 when the normal observation mode is set, the blue image of the subject image is on the B channel of the display 18, the green image of the subject image is on the G channel of the display 18, and the red image of the subject image is on the G channel.
  • the same signal allocation processing as in the normal observation mode is performed.
  • the signal processing unit 39 when the special light observation mode is set, the red image of the subject image is not used for the display of the display 18, and the blue image of the subject image is used for the B channel and G of the display 18.
  • a pseudo-color subject image is displayed on the display 18.
  • FIG. 4 (A) shows a subject image in a state where the digital zoom function is OFF
  • FIG. 4 (B) shows a subject in which the digital zoom function is ON, which is enlarged by cutting out the central portion of the subject image in FIG. 4 (A). The image is shown.
  • the digital zoom function is OFF, the subject is not enlarged or reduced by cropping the subject image.
  • the signal processing unit 39 When the signal processing unit 39 is set to the length measurement mode, the signal processing unit 39 performs a structure emphasizing process for emphasizing the structure of blood vessels and the like on the subject image, and the normal part and the lesion part of the observation target.
  • the color difference enhancement process that extends the color difference may be performed.
  • the display control unit 40 displays the subject image generated by the signal processing unit 39 on the display 18.
  • the system control unit 41 controls the image pickup device 32 via the image pickup control section 33 provided in the endoscope 12.
  • the image pickup control unit 33 also controls the CDS / AGC34 and the A / D35 in accordance with the control of the image pickup element 32.
  • the beam light emitting unit 23 emits the measurement light obliquely with respect to the optical axis Ax of the imaging optical system 21.
  • the beam light emitting unit 23 includes a light source 23a, a diffractive optical element DOE23b (Diffractive Optical Element), a prism 23c, and an emitting unit 23d.
  • the light source 23a emits light of a color that can be detected by the pixels of the image pickup element 32 (specifically, visible light), and is a light emitting element such as a laser light source LD (LaserDiode) or an LED (LightEmittingDiode). , Including a condensing lens that condenses the light emitted from this light emitting element.
  • the light source 23a is provided on a scope electric substrate (not shown).
  • the scope electric board is provided at the tip end portion 12d of the endoscope, and receives power from the light source device 14 or the processor device 16 to supply power to the light source 23a.
  • the wavelength of the light emitted by the light source 23a is, for example, 600 nm or more and 660 nm or less red (beam light color) laser light, but light in other wavelength bands, for example, 495 nm or more and 570 nm or less. You may use the green light of.
  • the light source 23a is controlled by the system control unit 41, and emits light based on an instruction from the system control unit 41.
  • the DOE23b converts the light emitted from the light source into the measurement light for obtaining the measurement information.
  • the amount of light to be measured may be adjusted from the viewpoint of protecting the human body, eyes, and internal organs, and may be adjusted to such an amount that the light is sufficiently overexposed (pixel saturation) in the observation range of the endoscope 12. preferable.
  • the prism 23c is an optical member for changing the traveling direction of the measurement light after conversion by DOE23b.
  • the prism 23c changes the traveling direction of the measurement light so as to intersect the field of view of the imaging optical system 21 including the objective lens 21a. The details of the traveling direction of the measurement light will also be described later.
  • the measurement light Lm emitted from the prism 23c is irradiated to the subject through the emitting portion 23d formed of the optical member.
  • a spot SP as a beam irradiation region is formed in the subject.
  • the position of the spot SP is characterized by the irradiation position detection unit 58 (see FIG. 8), and a measurement marker indicating the size of the subject is set according to the position of the spot SP.
  • the set measurement marker is displayed on the subject image.
  • the measurement markers include a plurality of types such as a first measurement marker and a second measurement marker, and which type of measurement marker is to be displayed on the subject image. Can be selected according to the user's instructions. As the user's instruction, for example, the user interface 20 is used.
  • the exit portion 23d may be a measurement assist slit formed in the tip portion 12d of the endoscope.
  • the emitting portion 23d is composed of an optical member, it is preferable to apply an antireflection coating (AR (Anti-Reflection) coating) (antireflection portion).
  • AR Anti-Reflection
  • the antireflection coat is provided in this way is that when the measurement light is reflected without passing through the emission unit 23d and the ratio of the measurement light emitted to the subject decreases, the irradiation position detection unit 58, which will be described later, determines the measurement light. This is because it becomes difficult to recognize the position of the spot SP formed on the subject.
  • the beam light emitting unit 23 may be any as long as it can emit the measured light toward the field of view of the imaging optical system 21.
  • the light source 23a may be provided in the light source device, and the light emitted from the light source 23a may be guided to the DOE 23b by an optical fiber.
  • the measurement light Lm is emitted in the direction crossing the field of view of the imaging optical system 21. It may be configured to be made to.
  • the measurement light is emitted in a state where the optical axis Lm of the measurement light intersects the optical axis Ax of the imaging optical system 21.
  • the measurement light Lm in the imaging range (indicated by arrows Qx, Qy, Qz) at each point. It can be seen that the positions of the spots SP formed on the subject (points where the arrows Qx, Qy, and Qz intersect with the optical axis Ax) are different.
  • the shooting angle of view of the imaging optical system 21 is represented in the region sandwiched between the two solid lines 101a, and the measurement is performed in the central region (the region sandwiched between the two dotted lines 101b) having less aberration in the shooting angle of view. I have to.
  • the size of the subject can be measured from the movement of the spot position with respect to the change in the observation distance. can. Then, by imaging the subject illuminated by the measurement light with the image sensor 32, a subject image including the spot SP can be obtained.
  • the position of the spot SP differs depending on the relationship between the optical axis Ax of the imaging optical system 21 and the optical axis Lm of the measurement light Lm and the observation distance, but if the observation distance is short, the same actual size ( For example, the number of pixels indicating 5 mm) increases, and the number of pixels decreases as the observation distance increases.
  • the signal processing unit 39 of the processor device 16 controls whether or not the length measurement mode can be executed, and detects the position of the spot SP in the subject image in a state where the length measurement mode is permitted to be executed.
  • a first signal processing unit 50 is provided, and a second signal processing unit 52 that sets a measurement marker according to the position of the spot SP is provided.
  • the signal processing unit 39 is input with a subject image of the subject illuminated by the illumination light.
  • the special light observation mode is set, the subject image of the subject illuminated by the special light is input.
  • the length measurement mode is set, the subject image of the subject illuminated by the illumination light and the measurement light is input.
  • the calibration mode is set, the inspection image of the chart on which the pattern for calibration is formed is input, but the light to be illuminated at that time is the measurement light and the illumination according to the progress of the calibration. The light is switched arbitrarily and illuminated.
  • the first signal processing unit 50 includes an irradiation position detection unit 58 that detects the irradiation position of the spot SP from the subject image or the inspection image.
  • the irradiation position detection unit 58 detects the irradiation position of the spot SP from the subject image in a state where the execution of the length measurement mode is permitted. Specifically, the irradiation position detection unit 58 calculates the coordinates of the spot SP from the subject image in real time, and obtains the irradiation position of the spot SP from the calculated coordinates.
  • the subject image includes a beam color light image based on the color of the measurement light.
  • the second signal processing unit 52 sets a first measurement marker as a measurement marker for measuring the size of the subject based on the irradiation position of the spot SP, and sets the first measurement marker on the display 18.
  • the second signal processing unit 52 refers to the irradiation position with reference to the marker table 62 that stores the measurement marker image whose display mode differs depending on the irradiation position of the spot SP and the marker display position in association with the irradiation position of the spot.
  • the measurement marker image for example, has a different size or shape depending on the irradiation position of the spot SP and the marker display position.
  • the display of the measurement marker image will be described later.
  • the stored contents of the marker table 62 are maintained even when the power of the processor device 16 is turned off.
  • the marker table 62 stores the measurement marker image and the irradiation position in association with each other, and stores the distance to the subject corresponding to the irradiation position (distance between the tip portion 12d of the endoscope 12 and the subject) and the measurement. It may be stored in association with the marker image.
  • the display control unit 40 controls the display mode of the measurement marker to be different depending on the irradiation position of the spot SP and the marker display position. conduct. Specifically, the display control unit 40 displays the measurement image on which the first measurement marker is superimposed, centering on the spot SP, on the display 18.
  • the first measurement marker for example, a circular measurement marker is used. In this case, as shown in FIG. 9, when the observation distance is close to the near-end Px, the actual size is 5 mm (horizontal direction and vertical of the subject image) in accordance with the center of the spot SP1 formed on the tumor tm1 of the subject. The marker M1 indicating the direction) is displayed.
  • the observation distance may also be displayed on the display 18.
  • the marker display position of the marker M1 is located in the peripheral portion of the subject image affected by the distortion by the imaging optical system 21, the marker M1 has an elliptical shape according to the influence of the distortion and the like. Since the above marker M1 substantially coincides with the range of the tumor tm1, the tumor tm1 can be measured to be about 5 mm. Note that the spot may not be displayed on the subject image, and only the first measurement marker may be displayed.
  • the actual size is 5 mm (horizontal and vertical directions of the subject image) in accordance with the center of the spot SP2 formed on the tumor tm2 of the subject.
  • the indicator M2 is displayed. Since the marker display position of the marker M2 is located at the center of the subject image which is not easily affected by the distortion by the imaging optical system 21, the marker M2 is circular without being affected by the distortion or the like. ..
  • a marker M3 indicating an actual size of 5 mm (horizontal direction and vertical direction of the subject image) is displayed so as to be aligned with the center of the spot SP3 formed on the tumor tm3 of the subject. Since the marker display position of the marker M3 is located in the peripheral portion of the subject image affected by the distortion by the imaging optical system 21, the marker M1 has an elliptical shape in accordance with the influence of the distortion and the like. As shown in FIGS. 9 to 11 above, the size of the first measurement marker corresponding to the same actual size of 5 mm becomes smaller as the observation distance becomes longer. Further, the shape of the first measurement marker differs depending on the marker display position according to the influence of the distortion caused by the imaging optical system 21.
  • the center of the spot SP and the center of the marker are displayed so as to coincide with each other.
  • the first measurement marker is located at a position away from the spot SP. May be displayed.
  • the first measurement marker in a state in which the distortion aberration of the subject image is corrected and not deformed may be displayed in the corrected subject image. ..
  • the first measurement marker corresponding to the actual size of the subject of 5 mm is displayed, but the actual size of the subject is an arbitrary value (for example, 2 mm) according to the observation target and the observation purpose. , 3 mm, 10 mm, etc.) may be set.
  • the first measurement marker has a substantially circular shape, but as shown in FIG. 12, it may have a cross shape in which vertical lines and horizontal lines intersect. Further, a graduated cross shape in which a scale Mx is added to at least one of a cross-shaped vertical line and a horizontal line may be used.
  • the first measurement marker a distorted cross shape in which at least one of a vertical line and a horizontal line is tilted may be used.
  • the first measurement marker may be a circle in which a cross shape and a circle are combined and a cross shape.
  • the first measurement marker may be a measurement point cloud type in which a plurality of measurement point EPs corresponding to the actual size from the spot are combined.
  • the number of the first measurement markers may be one or a plurality, and the color of the first measurement markers may be changed according to the actual size.
  • the first measurement marker As the first measurement marker, as shown in FIG. 13, three concentric markers M4A, M4B, and M4C (each having a diameter of 2 mm, 5 mm, and 10 mm having a diameter of 2 mm, 5 mm, and 10 mm) having different sizes are placed on the tumor tm4.
  • the spot SP4 formed in the above may be displayed on the subject image. Since a plurality of these three concentric markers are displayed, the trouble of switching can be saved, and measurement is possible even when the subject has a non-linear shape.
  • a combination of multiple conditions can be prepared in advance and selected from the combinations. It may be.
  • the marker M5A is represented by a dotted line representing red
  • the marker M5B is represented by a solid line representing blue
  • the marker M5C is represented by a alternate long and short dash line representing white.
  • the first measurement marker in addition to a plurality of concentric markers, as shown in FIG. 15, a plurality of distorted concentric markers in which each concentric circle is distorted may be used.
  • the distorted concentric markers M6A, M6B, and M6C are displayed on the subject image centering on the spot SP5 formed on the tumor tm5.
  • the subject In the length measurement mode, the subject is constantly irradiated with the illumination light and the spot light (measurement light).
  • the illumination light is constantly lit and constantly irradiates the subject with the spot.
  • the light may intermittently irradiate the subject with spot light by repeating turning on and off (or dimming) every frame (or every few frames).
  • the position of the spot light is detected and the display setting of the measurement marker is performed. Then, it is preferable to superimpose and display the measurement marker for which the display setting has been made on the image obtained in the frame that irradiates only the illumination light.
  • the measurement light the light formed as a spot when the subject is irradiated is used, but other light may be used.
  • a line-shaped measurement light formed as an intersecting line 80 on the subject may be used.
  • an intersecting line 80 which is a line-shaped irradiation region, is formed on the subject.
  • a second measurement marker including the intersection line 80 and the scale 82 as an index of the size of the subject is generated on the intersection line 80.
  • the irradiation position detection unit 58 detects the position of the intersection line 80 (irradiation position of the measurement light).
  • the subject When a line-shaped measurement light is used as the measurement light, the subject may be constantly irradiated with the illumination light and the line-shaped measurement light during the length measurement mode, and as shown in FIG. 18, the illumination light is While constantly irradiating the subject, the line-shaped measurement light intermittently illuminates the subject by repeating turning on and off (or dimming) every frame (or every few frames). You may. In this case, in the frame that lights the line-shaped measurement light, the position of the line-shaped measurement light is detected and the display of the measurement marker is set. Then, it is preferable to superimpose and display the measurement marker for which the display setting has been made on the image obtained in the frame that irradiates only the illumination light.
  • the striped pattern light ZPL formed as the light of the striped pattern on the subject may be used (for example, Japanese Patent Application Laid-Open No. 2016-1983304 (see).
  • the striped pattern light ZPL is obtained by irradiating a liquid crystal shutter (not shown) with variable transmittance with a specific laser light, and a region (transmissive region) through which the specific laser light is transmitted by the liquid crystal shutter and a specific laser light. Is formed from two different patterns of vertical stripes that do not pass through (non-transparent area) and repeat periodically in the horizontal direction.
  • the cycle of the striped pattern light changes depending on the distance from the subject. Therefore, the cycle or phase of the striped pattern light is shifted by the liquid crystal shutter and irradiated multiple times.
  • the three-dimensional shape of the subject is measured based on a plurality of images obtained by shifting the period or phase.
  • the subject is alternately irradiated with the striped pattern light of phase X, the striped pattern light of phase Y, and the striped pattern light of phase Z.
  • the striped pattern light of the phases X, Y, and Z is phase-shifted by 120 ° (2 ⁇ / 3) from the vertical striped pattern.
  • the three-dimensional shape of the subject is measured using three types of images obtained based on each striped pattern light.
  • the striped pattern light of phase X, the striped pattern light of phase Y, and the striped pattern light of phase Z are switched in units of one frame (or several frames), respectively. It is preferable to irradiate the subject. It is preferable that the illumination light always irradiates the subject.
  • the measurement light LPL having a grid pattern formed as a grid pattern when the subject is irradiated may be used (for example, JP-A-2017-217215). See Gazette).
  • the measurement light LPL of the grid pattern is not a perfect grid, but is slightly deformed from the grid such as wavy so as to improve the detection accuracy of the grid pattern.
  • the grid pattern is provided with an S code indicating that the end points of the left and right horizontal lines are continuous.
  • the grid pattern may be a pattern in which vertical lines and horizontal lines are regularly arranged, or a pattern in which a plurality of spots are arranged in a grid pattern in the vertical and horizontal directions.
  • the subject may be constantly irradiated with the illumination light and the measurement light LPL having a grid pattern during the length measurement mode, and as shown in FIG. , While the illumination light constantly irradiates the subject, the measurement light of the grid pattern LPL is the measurement light of the grid pattern by repeating turning on and off (or dimming) every frame (or every few frames).
  • the subject may be irradiated with LPL intermittently. In this case, in the frame that lights the measurement light LPL of the grid pattern, the three-dimensional shape is measured based on the measurement light LPL of the grid pattern. Then, it is preferable to superimpose and display the measurement result of the three-dimensional shape on the image obtained in the frame that irradiates only the illumination light.
  • a three-dimensional plane light TPL represented by a mesh line on the subject image may be used (see, for example, Japanese Patent Application Laid-Open No. 2017-508529).
  • the tip portion 12d is moved so that the three-dimensional plane light TPL matches the measurement target.
  • the distance of the intersection curve CC between the three-dimensional parallel light TPL and the subject is calculated by a process based on a manual operation such as a user interface or an automatic process.
  • the subject When the three-dimensional plane light TPL is used as the measurement light, the subject may be constantly irradiated with the illumination light and the three-dimensional plane light TPL during the length measurement mode, and as shown in FIG. 24, the illumination light is While constantly irradiating the subject, the three-dimensional plane light TPL intermittently irradiates the subject with the three-dimensional plane light TPL by repeating turning on and off (or dimming) every frame (or every few frames). You may.
  • the details of the calibration mode will be explained.
  • the calibration mode is executed in cooperation with the inspection system 100 connected to the processor device 16 of the endoscope system 10 in addition to the endoscope system 10.
  • the endoscope 12 irradiates the measurement light.
  • the test chart (see FIG. 26) is irradiated with the measurement light to confirm whether or not the display of the measurement marker is appropriate.
  • the inspection system 100 includes a test chart 102, a display 18, and a moving mechanism unit 104.
  • the display 18 shares the display used in the endoscope system 10, a display for accuracy inspection may be separately provided.
  • the test chart 102 has a chart main body 105, and the chart main body 105 has an inspection area portion 106 having an inspection area having a specific shape and a reference for aligning the irradiation position of the measurement light at the time of accuracy inspection.
  • the inspection reference position 108 is provided.
  • the display 18 displays an inspection image obtained by imaging the chart main body 105 irradiated with the measurement light (for example, spot light SP) from the endoscope 12 with the endoscope 12. Further, in the inspection image, in addition to the inspection area portion 106 and the inspection reference position 108, a measurement marker M corresponding to the irradiation position of the measurement light is displayed.
  • the moving mechanism unit 104 holds the endoscope 12 in a state where the tip portion 12d of the endoscope 12 and the test chart 102 face each other, and holds the test chart 102 so as to be movable.
  • the moving mechanism unit 104 is attached to the base 109 and the base 109 to hold the endoscope 12 and is attached to the base 109 and moves the test chart 102.
  • a chart holding unit 112 that can hold the chart holding unit 112 and a movement amount adjusting unit 114 for moving the chart holding unit 112 in the vertical direction V or the horizontal direction W are provided.
  • the movement amount adjusting unit 114 may be manually or automatically performed by the user.
  • an angle fine adjustment mechanism for making the optical axis Ax of the imaging optical system perpendicular to the test chart 102 is provided in the endoscope holding unit 110 and /. Alternatively, it is preferably provided on the base 109 or the moving mechanism portion 104.
  • the moving mechanism unit 104 operates the moving amount adjusting unit 114 to move the chart holding unit 112 in the vertical direction V or the horizontal direction W, so that the emission position of the measurement light and the chart main body 105 are brought into contact with each other. At least either the distance or the irradiation position of the measurement light on the chart body 105 can be changed.
  • the irradiation position of the measurement light can be aligned with the inspection reference position in the inspection image.
  • the test chart 102 In the inspection area 106 provided on the test chart 102, when the irradiation position of the measurement light is aligned with the inspection reference position in the inspection image, the measurement marker displayed on the inspection image based on the irradiation position has a specific shape. It is used for confirmation inspection of whether or not it is in the inspection area.
  • the confirmation inspection of each inspection area is performed with the emission position of the measurement light and the chart main body 105.
  • the test chart 102 (see FIG.
  • the test chart 102 includes three circular inspection regions 106a, 106b, and 106c as inspection regions having a specific shape. These circular inspection regions 106a to 106c are provided concentrically with the inspection reference position 108 as the center. The inspection areas 106a to 106c are point-symmetrical with respect to the inspection reference position 108. The inspection areas 106a, 106b, and 106c are used for confirmation inspection of a 5 mm measurement marker, a 10 mm measurement marker, and a 20 mm measurement marker, respectively.
  • the width of the inspection area has an error range corresponding to the size of the measurement marker. Specifically, the width of the inspection area increases as the size of the measurement marker increases. In the case of the inspection area portion 106, the width Wp of the inspection area 106a ⁇ the width Wq of the inspection area 106b ⁇ the width Wr of the inspection area 106. This is because the larger the size of the measurement marker, the more easily it is affected by the misalignment of the chart body 105 in the chart holding unit 112 (see FIG. 28), and it becomes difficult to confirm and inspect the accurate measurement marker. Because. For example, if ⁇ 10% of the measurement marker is allowed as an error range for the width of the inspection area, the width of the inspection area 106a is designed to be 0.5 mm and the width of the inspection area 106c is designed to be 2.0 mm.
  • the chart holding unit 112 When confirming and inspecting a 5 mm measurement marker, the chart holding unit 112 is moved in the vertical direction V by operating the movement amount adjusting unit 114, and the distance between the emission position of the measurement light and the chart body 105. Is set to the distance L1 (see FIG. 28). Then, the user moves the chart holding unit 112 in the left-right direction W while checking the inspection image displayed on the display 18, and adjusts the irradiation position of the measurement light to the inspection reference position 108.
  • the confirmation inspection of whether or not the measurement marker Mp is in the inspection area may be performed visually by the user or may be automatically performed by using image processing (other measurement markers Mq, Mr.). The same applies to).
  • the chart body 105 is provided with a chart identifier 103 (for example, a QR code (registered trademark)) that can identify the type of the chart body.
  • the type of the chart main body 105 is read from the chart identifier 103 by a scanner or the like, and the confirmation inspection of the measurement marker is automatically performed based on the type of the chart main body 105.
  • the type of the chart body 105a includes the number of times the confirmation inspection is performed (multiple times (in the case of the test chart 102) or once (in the case of the test chart 120)), the size of the inspection area provided in the inspection area portion, and the like. included.
  • the confirmation inspection of the measurement marker is automatically performed, the automatic determination result of the confirmation inspection may be saved in the determination result storage memory of the processor device 16.
  • the chart main body 105 is provided with a serial number or characters indicating the type of the chart main body in addition to the chart identifier 103 in case the user visually performs a confirmation inspection.
  • the chart holding unit 112 When confirming and inspecting the 10 mm measurement marker Mq, the chart holding unit 112 is moved in the vertical direction V by operating the movement amount adjusting unit 114, and the distance between the measurement light emission position and the chart body 105 is reached. The distance is set to the distance L2 (> distance L1) (see FIG. 28). Then, the user moves the chart holding unit 112 in the left-right direction W while checking the inspection image displayed on the display 18, and adjusts the irradiation position of the measurement light to the inspection reference position 108. Then, as shown in FIG. 31, it is determined whether or not the 10 mm measurement marker Mq is properly displayed depending on whether or not the measurement marker Mq is inside the inspection area 106a in the inspection image.
  • the chart holding unit 112 When confirming and inspecting the 20 mm measurement marker Mr, the chart holding unit 112 is moved in the vertical direction V by operating the movement amount adjusting unit 114, and the measurement light is emitted between the emission position and the chart body 105.
  • the distance is set to the distance L3 (> distance L1, L2) (see FIG. 28).
  • the user moves the chart holding unit 112 in the left-right direction W while checking the inspection image displayed on the display 18, and adjusts the irradiation position of the measurement light to the inspection reference position 108. Then, as shown in FIG. 32, it is determined whether or not the 20 mm measurement marker Mr is properly displayed depending on whether or not the measurement marker Mr is inside the inspection area 106a in the inspection image.
  • the test chart 102 is provided with a confirmation inspection assisting unit 111 for assisting the confirmation inspection (see FIG. 26).
  • the confirmation inspection auxiliary unit 111 is eight radial lines extending radially from the inspection reference position 108 and intersecting each inspection area 106a to 106c. These eight radial lines are axisymmetric and have an equiangular spacing of 45 degrees.
  • 8 of the intersection CA (see FIG. 29) between the radial line and the inspection area. At some point, it is possible to confirm whether or not the measurement marker M is within the inspection area.
  • the user determines that the measurement marker Mp is properly displayed.
  • the measurement marker M is out of the inspection area even at one of the intersection areas CA, the user determines that the measurement marker Mp is not properly displayed.
  • the test chart 120 includes three circular inspection regions 106a, 106b, and 106c as inspection regions having a specific shape. These three circular inspection areas 106a to 106c are shared at a specific point. In the test chart 120, a specific point is set as the inspection reference position 108. The inspection areas 106a to 106c are line-symmetrical with respect to the line 108a passing through the inspection reference position 108.
  • the inspection area 106a is used for the confirmation inspection of the 5 mm measurement marker Mp in the same manner as described above.
  • the inspection area 106b is used for the confirmation inspection of the measurement marker Mq of 10 mm in the same manner as described above.
  • the inspection area 106c is used for the confirmation inspection of the measurement marker Mr of 20 mm in the same manner as described above.
  • the test chart 120 By using the test chart 120, it is possible to perform the confirmation inspection of all the inspection areas 106a to 106c at one time.
  • the chart holding unit 112 When performing a confirmation inspection using the test chart 120, the chart holding unit 112 is moved in the vertical direction V by operating the movement amount adjusting unit 114 to determine the distance between the emission position of the measurement light and the chart body 105. Set to a specific distance (see FIG. 28).
  • the display control unit 40 displays all the measurement markers Mp, Mq, and Mr of 5 mm, 10 mm, and 20 mm based on the irradiation position of the measurement light on the inspection image. To do so. Then, the user moves the chart holding unit 112 in the left-right direction W while checking the inspection image displayed on the display 18, and adjusts the irradiation position of the measurement light to the inspection reference position 108.
  • the confirmation inspection of whether or not the measurement markers Mp, Mq, and Mr are in the inspection area may be performed automatically by the user or by using image processing.
  • the inspection area having a specific shape is set to the circular inspection areas 106a, 106b, 106c, and as shown in FIG. 36, the inspection target is to be inspected.
  • the inspection area having a specific shape is set to the diamond-shaped inspection areas 122a, 122b, and 122c according to the shape of the measurement marker.
  • the inspection areas 122a, 122b, and 122c are used for confirmation inspection of measurement markers of 5 mm, 10 mm, and 20 mm, respectively. Further, as shown in FIG.
  • the inspection area having a specific shape is set to the rectangular inspection areas 124a, 124b, 124c according to the shape of the measurement marker.
  • the inspection areas 124a, 124b, and 124c are used for confirmation inspection of measurement markers of 5 mm, 10 mm, and 20 mm, respectively.
  • the hue of the measured light when the chart body 105 is irradiated is the same as the hue of the measured light when the actual subject (human body such as the esophagus, stomach, and large intestine) is irradiated. It is preferable to set the hue of the chart body 105 so as to be.
  • the same hue includes not only the case where each hue is completely matched, but also the case where the difference in hue (difference in hue value) is within a certain range.
  • the inspection area and the area other than the inspection area of the chart main body 105 have the same hue for the above reason (because they have the same hue as the measurement light in the subject), but the inspection area and other parts have the same hue. The saturation is different to make it easier to identify.
  • an adhesive sheet 105b is provided on the PSF (polysulfon) plate 105a, and the adhesive sheet 105b is provided with respect to the adhesive sheet 105b.
  • the inspection area portion 106 is provided.
  • the inspection area 106 is preferably printed with toner such as a laser printer or offset printing ink. Then, the inspection area portion 106 is covered with the tracing paper 105c.
  • the PSF plate 105a has a high reflectance and has some light scattering.
  • the tracing paper 105c preferably has the reflectance and light scattering rate of the average mucous membrane of the subject such as the esophagus, stomach, and large intestine.
  • the hue of the measured light when the chart body 105 is irradiated is the hue of the measured light when the actual subject (human body such as the esophagus, stomach, and large intestine) is irradiated. Will be the same as.
  • the reflectance of the test chart 102 is the same as the reflectance of the subject, so that the irradiation position detection unit 58 of the processor device 16 can use the measurement light ( Spot light) can be detected reliably.
  • the test chart 102 and the test chart 120 (see FIGS. 26 and 33) for the spot light whose inspection reference position corresponds to the spot light are used, but the measurement is performed.
  • a line-shaped measurement light is used as the light, as shown in FIG. 39, a confirmation inspection of the measurement marker is performed using a line test chart 130 in which the inspection reference position 128 corresponds to the line-shaped measurement light. Is preferable.
  • a pattern-shaped measurement light is used as the measurement light, as shown in FIG. 40, a test chart 134 for a grid pattern in which the inspection reference position 132 corresponds to the grid-shaped measurement light is used for measurement.
  • test chart 102 of the present embodiment can be applied mutatis mutandis.
  • the test chart 102 is placed on the chart holding unit 112, and the endoscope 12 is attached to the endoscope holding unit 110 with the tip portion 12d of the endoscope and the test chart 102 facing each other. Then, the calibration is switched by operating the mode changeover switch 13a. As a result, the measurement light is emitted from the endoscope 12 toward the test chart 102.
  • the endoscope 12 obtains an inspection image by imaging the chart body 105 irradiated with the measurement light.
  • the inspection image is displayed on the display 18.
  • a measurement marker displayed according to the irradiation position of the measurement light is displayed.
  • the user confirms the inspection image and operates the movement amount adjusting unit 114 so that the irradiation position of the measurement light matches the inspection reference position 108, and the distance between the emission position of the measurement light and the chart body 105, or , At least one of the irradiation positions of the measurement light on the chart body 105 is changed.
  • the user performs a confirmation inspection as to whether or not the measurement marker is properly displayed.
  • the movement amount adjusting unit 114 is operated so that the 5 mm measurement marker Mp enters the inspection area 106a, and the chart body 105 is moved to the vertical direction V or the horizontal direction W. Move. Then, when the irradiation position of the measurement light matches the inspection reference position 108 and the measurement marker Mp is inside the inspection area 106a in the inspection image, the measurement marker Mp is properly displayed. Judge that there is. If the measurement marker Mp is not inside the inspection area 106a, it is determined that the measurement marker Mp is not properly displayed.
  • the chart body 105 is moved in the vertical direction V or the horizontal direction W so that the measurement marker Mq of 10 mm enters the inspection area 106b. Then, when the irradiation position of the measurement light matches the inspection reference position 108, it is determined whether or not the measurement marker Mq is inside the inspection area 106a in the inspection image as in the case of the 5 mm measurement marker Mp. to decide. Next, after the confirmation inspection regarding the inspection marker Mq is completed, the chart body 105 is moved in the vertical direction V or the horizontal direction W so that the measurement marker Mr of 20 mm enters the inspection area 106c.
  • the irradiation position of the measurement light matches the inspection reference position 108, it is determined whether or not the measurement marker Mr is inside the inspection area 106c in the inspection image, as in the case of the 5 mm measurement marker Mp. to decide.
  • the confirmation inspection when the test chart 102 at a specific distance is used is completed.
  • the flow up to this point can be repeated with one or a plurality of preset endoscope-chart distances, and the pass / fail of the product can be judged by the judgment criteria.
  • the hardware structure of the processing unit that executes various processes is various processors as shown below.
  • the circuit configuration is changed after manufacturing the CPU (Central Processing Unit), FPGA (Field Programmable Gate Array), etc., which are general-purpose processors that execute software (programs) and function as various processing units. It includes a programmable logic device (PLD), which is a possible processor, a dedicated electric circuit, which is a processor having a circuit configuration specially designed for executing various processes, and the like.
  • PLD programmable logic device
  • One processing unit may be composed of one of these various processors, or may be composed of a combination of two or more processors of the same type or different types (for example, a plurality of FPGAs or a combination of a CPU and an FPGA). May be done. Further, a plurality of processing units may be configured by one processor. As an example of configuring a plurality of processing units with one processor, first, as represented by a computer such as a client or a server, one processor is configured by a combination of one or more CPUs and software. There is a form in which this processor functions as a plurality of processing units.
  • SoC System On Chip
  • a processor that realizes the functions of the entire system including a plurality of processing units with one IC (Integrated Circuit) chip is used.
  • the various processing units are configured by using one or more of the above-mentioned various processors as a hardware-like structure.
  • the hardware structure of these various processors is, more specifically, an electric circuit in the form of a combination of circuit elements such as semiconductor elements.
  • the hardware structure of the storage unit is a storage device such as an HDD (hard disk drive) or SSD (solid state drive).
  • the measurement light and the irradiation of the measurement light are preferably as follows.
  • the measurement light is preferably spot light.
  • the measurement light is preferably a line-shaped measurement light.
  • the measurement light is preferably a measurement light having a grid pattern.
  • the measurement light is preferably three-dimensional plane light. It is preferable to intermittently irradiate the subject with the measurement light.
  • the measurement light is preferably striped pattern light. It is preferable to switch a plurality of striped pattern lights having different phases or periods to irradiate the subject.

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Abstract

L'invention concerne un graphique de test, un système de contrôle et un procédé de contrôle qui peuvent contrôler si un marqueur de mesure est correctement marqué.　La graphique de test (102) comprend : une unité de zone de contrôle (106) qui a une zone de contrôle d'une forme spécifique ; et un corps principal de graphique (105) dans lequel une position de référence de contrôle (108) est disposée. L'unité de zone de contrôle (106) est utilisée pour vérifier si le marqueur de mesure marqué dans une image de contrôle se trouve à l'intérieur d'une zone de contrôle sur la base d'une position d'irradiation, lorsque la position d'irradiation de la lumière de mesure est mise en correspondance avec une position de référence de contrôle (108) dans l'image de contrôle obtenue en utilisant un endoscope (12) pour capturer une image d'un corps principal de graphique (105) irradié avec la lumière de mesure.
PCT/JP2021/008526 2020-05-07 2021-03-04 Graphique de test, système de contrôle et procédé de contrôle WO2021225026A1 (fr)

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Citations (6)

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Publication number Priority date Publication date Assignee Title
JP2010046276A (ja) * 2008-08-21 2010-03-04 Fujifilm Corp 内視鏡画像のズレ量測定装置及び方法、並びに電子内視鏡及び内視鏡用画像処理装置
JP2018000795A (ja) * 2016-07-07 2018-01-11 オリンパス株式会社 内視鏡プロセッサ
WO2018051680A1 (fr) * 2016-09-15 2018-03-22 富士フイルム株式会社 Système endoscope
WO2018051679A1 (fr) * 2016-09-15 2018-03-22 富士フイルム株式会社 Dispositif d'aide à la mesure, système d'endoscope, processeur pour système d'endoscope, et procédé d'aide à la mesure
WO2018055933A1 (fr) * 2016-09-20 2018-03-29 富士フイルム株式会社 Dispositif d'aide à la mesure, système d'endoscope, processeur de système d'endoscope et procédé d'aide à la mesure
JP2020014807A (ja) * 2018-07-27 2020-01-30 富士フイルム株式会社 内視鏡装置及びその作動方法並び内視鏡装置用プログラム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010046276A (ja) * 2008-08-21 2010-03-04 Fujifilm Corp 内視鏡画像のズレ量測定装置及び方法、並びに電子内視鏡及び内視鏡用画像処理装置
JP2018000795A (ja) * 2016-07-07 2018-01-11 オリンパス株式会社 内視鏡プロセッサ
WO2018051680A1 (fr) * 2016-09-15 2018-03-22 富士フイルム株式会社 Système endoscope
WO2018051679A1 (fr) * 2016-09-15 2018-03-22 富士フイルム株式会社 Dispositif d'aide à la mesure, système d'endoscope, processeur pour système d'endoscope, et procédé d'aide à la mesure
WO2018055933A1 (fr) * 2016-09-20 2018-03-29 富士フイルム株式会社 Dispositif d'aide à la mesure, système d'endoscope, processeur de système d'endoscope et procédé d'aide à la mesure
JP2020014807A (ja) * 2018-07-27 2020-01-30 富士フイルム株式会社 内視鏡装置及びその作動方法並び内視鏡装置用プログラム

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