WO2023119570A1 - 投射装置および投射システム - Google Patents

投射装置および投射システム Download PDF

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Publication number
WO2023119570A1
WO2023119570A1 PCT/JP2021/047933 JP2021047933W WO2023119570A1 WO 2023119570 A1 WO2023119570 A1 WO 2023119570A1 JP 2021047933 W JP2021047933 W JP 2021047933W WO 2023119570 A1 WO2023119570 A1 WO 2023119570A1
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WIPO (PCT)
Prior art keywords
projection
image
unit
projection device
terminal
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Application number
PCT/JP2021/047933
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English (en)
French (fr)
Japanese (ja)
Inventor
崇正 森江
Original Assignee
三菱電機ビルソリューションズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 三菱電機ビルソリューションズ株式会社 filed Critical 三菱電機ビルソリューションズ株式会社
Priority to JP2023568946A priority Critical patent/JP7551009B2/ja
Priority to PCT/JP2021/047933 priority patent/WO2023119570A1/ja
Priority to CN202180105136.7A priority patent/CN118525185A/zh
Publication of WO2023119570A1 publication Critical patent/WO2023119570A1/ja

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters

Definitions

  • the present disclosure relates to a projection device and a projection system that project a projection image toward an installation surface on which an object is installed.
  • equipment such as lighting, air conditioning, and disaster prevention equipment is placed on the ceiling.
  • equipment such as lighting, air conditioning, and disaster prevention equipment is placed on the ceiling.
  • it is necessary to measure the dimensions of the installed equipment, etc., and an on-site survey is conducted in the building.
  • the site survey the width of the equipment and the height of the ceiling are measured, and the installation state of the equipment is photographed with a camera.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2007-205915
  • the present disclosure has been made to solve the above-described problems, and an object of the present disclosure is to provide a projection device capable of efficiently and accurately measuring the size of an object while ensuring work safety. It is to provide a projection system.
  • a projection device is a device that projects a projection image toward an installation surface on which an object is installed.
  • the projection device includes a measurement section, a projection section, a lens, a change section, and a calculation section (for example, a CPU).
  • the measurement unit measures the distance from the projection device to the installation surface.
  • the projection unit projects a projection image toward the installation surface.
  • the lens is arranged between the projection section and the installation surface.
  • the changing section changes at least one of the position of the projection section and the position of the lens along the direction in which the projection section projects.
  • the calculation unit calculates size information indicating the size of the projection image projected on the installation surface based on the distance, the position of the projection unit, and the position of the lens.
  • the projection device described above further includes a control unit.
  • the controller includes a calculator and a communication interface.
  • the communication interface is communicable with the terminal.
  • a projection system includes a projection device and a terminal.
  • the terminal can communicate with the projection device.
  • the terminal is equipped with a camera.
  • the projection device transmits size information to the terminal.
  • the terminal stores the size information when the captured image is captured together with the captured image captured by the camera.
  • FIG. 4 is a diagram for explaining size measurement of an object by the projection system according to the embodiment; It is a figure which shows an example of the hardware constitutions of a projection system. It is a figure for demonstrating the size measurement of the target object by the conventional measuring method. It is a figure which shows an example of a projection apparatus.
  • FIG. 4 is a diagram for explaining the relationship between the positions of the projection unit and the lens and the size of the projected image; It is a figure which shows an example of a projection image. It is a figure which shows an example of a projection image. It is a figure which shows an example of a projection image. It is a figure which shows an example of a projection image. It is a figure for demonstrating adjustment of a projection image. It is a figure for demonstrating adjustment of a projection image.
  • FIG. 4 is a diagram for explaining a display example on a terminal;
  • FIG. 4 is a diagram for explaining a display example on a terminal;
  • FIG. 4 is a flowchart of main processing (projection device);
  • 4 is a flowchart of main processing (terminal);
  • 6 is a flowchart of imaging processing;
  • FIG. 1 is a diagram for explaining size measurement of an object 31 by a projection system 1 according to this embodiment.
  • a projection system 1 includes a projection device 100 and a terminal 200 .
  • the projection device 100 is a device that projects a projection image 70 (projection images 70a to 70f in FIGS. 6A to 6C and FIGS. 7A to 7C) toward an installation surface (ceiling) 35 on which the object 31 is installed.
  • the terminal 200 is a terminal used by the worker 40 and can communicate with the projection device 100 .
  • the terminal 200 is configured to be connected to the projection device 100 by wireless communication such as Bluetooth (registered trademark) or wireless LAN (Local Area Network).
  • the projection device 100 is installed on the floor 36 and used.
  • the projection device 100 is separated by a distance H from the installation surface (ceiling) 35 on which the object 31 is installed.
  • the object 31 is a circular luminaire whose diameter is X size.
  • the size of the projection image 70 can be adjusted by adjusting the position of one or both of the projection unit 123 and the lens 122 provided in the projection device 100 .
  • the worker 40 uses the terminal 200 to photograph the target object 31 and the projected image 70 during a field survey for replacing existing equipment.
  • the size X of the object 31 is automatically recorded at the same time when the object 31 and the projection image 70 are captured by the terminal 200 .
  • FIG. 2 is a diagram showing an example of the hardware configuration of the projection system 1.
  • Projection device 100 includes control unit 110 , projection unit 123 , change unit 124 , lens 122 , and measurement unit 121 .
  • Projection unit 123, change unit 124, lens 122, and measurement unit 121 will be described later.
  • the control unit 110 includes a CPU (Central Processing Unit) 111 as a calculation unit, a ROM (Read Only Memory) 112, a RAM (Random Access Memory) 113, and a communication interface 115 as a transmission unit.
  • CPU Central Processing Unit
  • ROM Read Only Memory
  • RAM Random Access Memory
  • the CPU 111 comprehensively controls the entire projection device 100 .
  • the CPU 111 develops a program stored in the ROM 112 in the RAM 113 and executes it.
  • the ROM 112 stores a program in which processing procedures of the projection device 100 are described.
  • the RAM 113 serves as a work area when the CPU 111 executes the programs, and temporarily stores the programs and data used when the programs are executed.
  • Communication interface 115 is an interface for communicating with terminal 200 .
  • the terminal 200 includes a CPU 211 , a ROM 212 , a RAM 213 , a storage section 214 , a communication interface 215 , a camera 216 , an input section 220 and a display section 221 .
  • the CPU 211 comprehensively controls the terminal 200 as a whole.
  • the CPU 211 develops a program stored in the ROM 212 in the RAM 213 and executes it.
  • ROM 212 stores a program in which the processing procedure of terminal 200 is described.
  • the RAM 213 serves as a work area when the CPU 211 executes the programs, and temporarily stores the programs and data used when the programs are executed.
  • a communication interface 215 is an interface for communicating with the projection device 100 .
  • the storage unit 214 is a nonvolatile storage device.
  • the storage unit 114 may be, for example, an HDD (Hard Disk Drive), an SSD (Solid State Drive), or the like.
  • the input unit 220 accepts input from the user.
  • Input unit 220 may be, for example, a touch panel, a keyboard, or a mouse.
  • the display unit 221 displays various information.
  • the display unit 221 is, for example, a liquid crystal display or display.
  • the terminal 200 may be, for example, a smartphone, a notebook computer, a tablet terminal, or the like.
  • FIG. 3 is a diagram for explaining size measurement of an object 31 by a conventional measuring method.
  • the size X of the object (lighting device) 31 installed on the ceiling (installation surface) 35 is about to be measured. Since there is a distance to the ceiling 35, the worker 40 installs a stepladder 44 on the floor 36. - ⁇
  • the worker 40 works while climbing the stepladder 44 .
  • the worker 40 applies the scale 42 to the object 31 in this state and measures the size X of the object 31 .
  • the worker 40 may fall from the stepladder or be cut by the metal scale 42 .
  • a series of tasks such as using a measuring instrument (scale 42), reading out the size, recording the size with a writing instrument, and working in conjunction with photographing with a camera are performed. At that time, it may take time to switch to a writing instrument or a camera, or a recording error may occur due to handwriting. Furthermore, in field surveys, it takes a lot of time to temporarily suspend the work for recording and sorting out the survey results and sorting out information after the survey.
  • FIG. 4 is a diagram showing an example of the projection device 100. As shown in FIG. Inside the projection device 100, a measurement unit 121, a lens 122, a projection unit 123, and the like are arranged.
  • the measurement unit 121 is, for example, a laser rangefinder.
  • the measurement unit 121 measures the distance H (see FIG. 1) from the projection device 100 (upper surface of the projection device 100) to the installation surface (ceiling) 35.
  • FIG. Projection unit 123 projects projection image 70 toward installation surface (ceiling) 35 .
  • the lens 122 is arranged between the projection section 123 and the installation surface 35 .
  • the changing unit 124 is a driving device that changes at least one of the position of the projection unit 123 and the position of the lens 122 along the direction in which the projection unit 123 projects the projection image (also referred to as “projection direction”). be.
  • a distance H is the distance from the position of the upper surface of the projection device 100 to the ceiling 35 when the projection device 100 is installed on the floor 36 .
  • the projection direction of the projection unit 123 and the laser output direction of the measurement unit 121 are the same.
  • the distance a is the distance from the output position of the projection unit 123 to the center position of the lens 122 along the projection direction.
  • the distance b is the distance from the center position of the lens 122 to the position of the upper surface of the projection device 100 along the projection direction.
  • FIG. 5 is a diagram for explaining the relationship between the positions of the projection unit 123 and the lens 122 and the size of the projection image 70.
  • FIG. A focal point 61 is the focal point of the lens 122 and is located on the top surface of the projection device 100 along the projection direction.
  • the distance a is the distance from the output position of the projection unit 123 (the output position of the light source) to the center position of the lens 122, and the distance from the center position of the lens 122 to the top surface of the projection device 100 is the distance.
  • b and the distance H is the distance from the upper surface of the projection device 100 to the ceiling 35 on which the projection image 70 is projected.
  • the size c is the size of the projection image at the output position of the projection unit 123.
  • a circular image is output, so the size c indicates the diameter of the circular image.
  • the size X is the size (diameter) of the projected image 70 projected on the ceiling (installation surface) 35 .
  • the projection unit 123 generates a circular or square image or the like shown in FIGS.
  • projection unit 123 may be a circular light source that simply emits light.
  • size c is the diameter of the light source.
  • FIGS. 6A-6C and 7A-7C are diagrams showing an example of the projection image 70.
  • FIG. 7A to 7C are diagrams for explaining adjustment of the projection image 70.
  • FIG. Projected images 70 include projected images 70a-70f shown in FIGS. 6A-6C and 7A-7C.
  • the projection image 70 includes circular images (projection images 70a, b, df) and square images (projection image 70c).
  • the size information includes the diameter of circular images and the length of one side of square images.
  • the projection unit 123 projects the size information together with the projection image 70 toward the installation surface 35 . Thereby, the worker 40 can intuitively grasp the size of the projection image 70 .
  • the projected image 70 may be a circular projected image 70a as shown in FIG. 6A.
  • the projected image 70a may be a circular image of any color (eg, yellow), or may be an image composed only of the edge (outline) of a circle.
  • the projected image 70 may be a circular projected image 70b as shown in FIG. 6B.
  • the projection image 70b is the same image as the projection image 70a, but when the projection image 70b is projected, an image showing the diameter of the circle is also projected.
  • an image showing the diameter of a circle with arrows at both ends is projected, and an image " ⁇ Xmm” showing that the diameter of the circle is "X" mm is projected.
  • Images of arrows and images of diameters may also be referred to as "projection images”.
  • the projected image 70 may be a square projected image 70c as shown in FIG. 6C.
  • the projected image 70c may be a square image of any color (eg, yellow), or may be an image composed only of square edges (contours).
  • an image showing one side of the square is also projected at the same time.
  • an image showing one side of a square with arrows attached to both ends is projected, and an image "X mm" showing that one side of the square is "X" mm is projected.
  • the shape of the projected image 70 is not limited to the above, and may be any shape such as a rectangle, polygon, or ellipse. Also, the shape of the projection image 70 may be configured to be selectable so as to have the same or similar shape as the target object 31 .
  • a projection image 70d is projected onto the object 31 as shown in FIG. 7A.
  • the object 31 is a circular illumination device with a diameter of 'x2' mm.
  • the projected image 70d is also circular, but its diameter is "x1" mm, which is smaller than "x2" mm.
  • the projection image 70d is smaller than the object 31.
  • the projected image 70f is larger than the object 31, but in the example of FIG. 7B, the size of the object 31 and the size of the projected image 70e match.
  • the operator 40 instructs the changing unit 124 to change the position of the projection unit 123 and the position of the lens 122. change.
  • Example of display on terminal 200 8 and 9 are diagrams for explaining display examples on the terminal 200.
  • FIG. In this example it is assumed that the terminal 200 is a smartphone, and dedicated application software (hereinafter referred to as “dedicated application”) used in the projection system 1 is installed in the terminal 200 in advance.
  • dedicated application software hereinafter referred to as “dedicated application”
  • a dedicated application used on the terminal 200 can access the camera 216 and communicate with the projection device 100 .
  • the dedicated application it is possible to perform operations such as displaying a photographed image captured from the camera 216, changing the size X, and saving the photographed image.
  • FIG. 8 shows the display screen on the display unit 221 of the terminal 200 after the dedicated application is activated.
  • the display unit 221 displays an image captured by the camera 216 .
  • the worker 40 is pointing the camera 216 at the object 31 installed on the installation surface (ceiling) 35 .
  • a projection image 70d is projected onto the target object 31, as in FIG. 7A. That is, the projection image 70 of x1 mm ( ⁇ x2 mm) is projected onto the object 31, which is a circular illumination device with a diameter of x2 mm.
  • the input unit 220 accepts instruction input for giving instructions to the changing unit 124 .
  • the input unit 220 is configured by a touch panel in the display unit 221 .
  • the upper “up arrow” button and the lower “down arrow” button of the “projection unit position” displayed at the bottom of the screen of the display unit 221 (these are collectively referred to as the “projection unit position” button).
  • the upper “up arrow” button and the lower “down arrow” button of "lens position” (these are collectively referred to as the “lens position” button), the “auto” button, the "shoot” button, and the "end” button.
  • a part 220 is configured.
  • the projection part 123 moves a predetermined amount in the direction of the ceiling (see FIGS. 4 and 5). As a result, the distance a is shortened by a predetermined amount.
  • the projection part 123 moves a predetermined amount in the direction opposite to the ceiling direction (see FIGS. 4 and 5). This increases the distance a by a predetermined amount.
  • the lens 122 moves a predetermined amount in the ceiling direction (see FIGS. 4 and 5). As a result, the distance b is shortened by a predetermined amount and the distance a is lengthened by a predetermined amount.
  • the lens 122 moves a predetermined amount in the direction opposite to the ceiling direction. As a result, the distance b is lengthened by a predetermined amount and the distance a is shortened by a predetermined amount.
  • the position of the projection unit 123 and the position of the lens 122 are adjusted so that the object 31 and the projected image 70 match without using the projection unit position button and the projection unit position button. automatically adjusted.
  • the capture button is pressed, the captured image is saved.
  • the "end” button is pressed, the dedicated application ends.
  • the display unit 221 performs a display prompting the input of an instruction.
  • a display prompting the operation (instruction input) of the "projection unit position" button and the "lens position” button so that the size of the projection image 70 matches the size of the target object 31, Match the object and shoot.” is displayed.
  • the display unit 221 displays that the diameter of the current projection image is "x1 mm”.
  • FIG. 10 is a flowchart of main processing (projection device).
  • FIG. 11 is a flowchart of main processing (terminal).
  • FIG. 12 is a flowchart of imaging processing.
  • the main process may be activated, for example, when the projection device 100 is powered on.
  • the main process may be started when the dedicated application is started on the terminal 200 .
  • step is also simply referred to as "S".
  • the measurement unit 121 of the projection device 100 measures the distance H from the projection device 100 to the installation surface 35 in S101 (see FIG. 1), and performs processing. to S102.
  • the mounting surface 35 may have a hole for mounting the object 31 .
  • the distance H becomes longer than the actual distance. In such a case, the distance H is measured with respect to a peripheral position avoiding the hole.
  • the CPU 111 determines whether an instruction input has been received from the terminal 200 in S102. This is a process corresponding to S206, which will be described later, and "instruction input” is input by operating the projection unit position button or the projection unit position button in FIG.
  • the CPU 111 causes the changing unit 124 to change the position of the projection unit 123 and the position of the lens 122 based on the instruction input, and advances the process to S104.
  • the driving device (change section 124) connected to the projection section 123 is driven to move the projection section 123 by a predetermined amount.
  • the driving device (change unit 124) connected to the lens 122 is driven to move the lens 122 by a predetermined amount. As a result, the distances a and b change.
  • the CPU 111 determines whether or not a captured image has been received from the terminal 200 in S104. This is a process corresponding to S208, which will be described later, and is a process that is performed when the "automatic" button described with reference to FIG. 8 is pressed.
  • the CPU 111 extracts the outline of the target object 31 and the outline of the projected image 70 included in the captured image, and advances the process to S106.
  • the captured image is a captured image of the target object 31 and the projected image 70 .
  • the photographed image includes an object 31 with a diameter x2 and a projected image 70 with a diameter x1 superimposed thereon.
  • the CPU 111 extracts an image corresponding to the object 31, and performs image processing on the image so that only the outline of the object 31 is extracted (extracts the boundary (edge) between the object 31 and the ceiling 35). do). Similarly, the CPU 111 extracts an image corresponding to the projection image 70, and performs image processing on the image so that only the outline of the projection image 70 is extracted (the boundary between the projection image 70 and the target object 31 ( edge)).
  • the CPU 111 causes the changing unit 124 to change the positions of the projection unit 123 and the lens 122 so that the outline of the object 31 and the projection image 70 overlap, and advances the process to S107.
  • the projection unit 123 is positioned so that the diameter (size X) of the projected image 70 becomes larger. and the position of the lens 122 is changed.
  • the size X can be increased by increasing only the distance b or decreasing only the distance a.
  • the distances a and b from the ratio of the diameter of the contour of the object 31 and the diameter of the contour of the projection image 70 so that the contour of the object 31 and the contour of the projection image 70 overlap.
  • the projection unit 123 and the lens 122 While changing the positions of the projection unit 123 and the lens 122, captured images are continuously acquired from the terminal 200 in real time, and when the outline of the target object 31 and the outline of the projection image 70 overlap, the projection unit 123 and the lens The position of 122 should be stopped.
  • the outline of the object 31 and the outline of the projected image 70 overlap, it is not limited to when the outlines of the two match in the photographed image. (the center positions of the two circles may be shifted), or when the difference between the two diameters is within a predetermined range. It is not necessary for the contours of the two to strictly overlap, and when the area inside the contour of the object 31 and the area inside the contour of the projection image 70 match (or the difference between the two areas is within a predetermined range) ), it may be considered that the contours of both overlap. Further, when the position of the target object 31 and the position of the projection image 70 are greatly deviated, a display prompting the operator 40 to adjust the position of the projection device 100 may be displayed on the screen of the terminal 200. good.
  • the CPU 111 acquires the size c and the distances a, b, and H in S107, and advances the process to S108.
  • the size c is the size of the projection image when output from the projection unit 123 (see FIGS. 4 and 5), and is a predetermined value.
  • the distance H is the value measured in S101.
  • the distances a and b are values changed by the operation of the projection unit position button or the projection unit position button by the operator, or by the operation of the automatic button.
  • the CPU 111 generates a projection image and size information, and advances the process to S110.
  • the size X x2.
  • the CPU 111 generates a projection image and sets the calculated size X (for example, “x2 mm”) to the size information.
  • the CPU 111 projects the projection image and the size information toward the installation surface 35, and advances the process to S111.
  • a projection image 70d having the same size as the target object 31 is projected.
  • an image indicating the diameter with arrows attached to both ends is projected, and an image "X2 mm" is also projected.
  • the CPU 111 (communication interface 115) transmits size information ("X2 mm" in this example) to the terminal, and returns the process to S102. As a result, the CPU 111 repeatedly executes the processes of S102 to S111. Note that the processes of S102 to S111 may be executed at predetermined time intervals (for example, 10 msec).
  • the CPU 211 acquires a captured image from the camera 216 in S201, and advances the process to S202.
  • the CPU 211 acquires size information from the projection device 100 in S202, and advances the process to S203. Since the size information is periodically transmitted (S111) from the projection device 100, the change of the size information by the changing unit 124 is also updated on the terminal 200 side almost in real time.
  • the CPU 211 In S203, the CPU 211 generates a message prompting an input to the input unit 220, and advances the process to S204. For example, as shown in FIG. 8, a message "Match the projection image with the object and shoot” is generated. In S204, the CPU 211 generates and displays a display screen (see FIG. 8), and advances the process to S205.
  • the CPU 211 determines in S205 whether or not an instruction to change the "projection unit position" or "lens position” has been input. Specifically, when the projection unit position button described with reference to FIG. 8 is operated, it is determined that an instruction input to change the "projection unit position" has been made. Also, when the lens position button is operated, it is determined that an instruction input to change the "lens position" has been made.
  • the CPU 211 transmits an instruction input to the projection device 100 in S206, and advances the process to S207. On the projection device 100 side, processing at the time of receiving an instruction input is performed in S102 and S103.
  • the CPU 211 determines whether or not the "automatic" button (see FIG. 8) has been pressed. When the CPU 211 determines that the "automatic” button has been pressed (YES in S207), the process proceeds to S208. On the other hand, when the CPU 211 does not determine that the "automatic” button has been pressed (NO in S207), the process proceeds to S209.
  • the CPU 211 transmits the captured image to the projection device 100 in S208, and advances the process to S209. On the side of the projection device 100, processing at the time of receiving the photographed image is performed in S104 to S106.
  • the CPU 211 determines in S209 whether or not the "shooting" button has been pressed (see FIG. 8). When the CPU 211 determines that the "shooting" button has been pressed (YES in S209), the process proceeds to S210. On the other hand, when the CPU 211 does not determine that the "shooting" button has been pressed (NO in S209), the process returns to S201.
  • the CPU 211 executes the shooting process in S210 and returns the process to S201. By returning the photographing process to S201, the CPU 211 repeatedly executes the processes of S201 to S210. Note that the processes of S201 to S210 may be executed at predetermined time intervals (for example, 10 msec).
  • the CPU 211 when the photographing process starts, the CPU 211 generates a file name of the photographed image change portion including the size information in S221, and advances the process to S222.
  • FIG. 9 shows the screen after pressing the shooting button.
  • the operator 40 presses the photographing button while the diameter of the projection image 70 and the diameter of the object 31 match at "x2 mm".
  • size information x2 mm (diameter of projection image 70).
  • the file name of the captured image consists of, for example, "image” + [serial number] + [size information].
  • serial numbers numbers such as "001", “002”, “003”, and so on are assigned in order of shooting.
  • size information when the diameter is x2 mm, " ⁇ x2 mm” is given as the file name.
  • the file name "image001 ⁇ x2mm.jpg" is generated.
  • the CPU 211 In S222, the CPU 211 generates property information of the captured image including size information, and advances the process to S223.
  • the CPU 211 In S223, the CPU 211 generates a subfile containing size information, and advances the process to S224.
  • a CSV file "image001.csv” is generated as a subfile corresponding to the file "image001 ⁇ x2mm.jpg”.
  • This CSV file contains the same content as the property information above. Specifically, in this CSV file, the first line is “name”, “image001 ⁇ x2mm.jpg”, the second line is “creation date and time”, “2021/12/01 14:00”, and the third line is , information such as "object diameter” and "x2mm” are described.
  • the CPU 211 saves the captured image and the subfile, and terminates the shooting process.
  • the terminal 200 includes the size information in the file name of the captured image and also includes the size information in the property information of the captured image and stores the captured image. Note that the terminal 200 may be configured to include any of the above information in the file name and store the file.
  • the shooting process is automatically executed without pressing the "shooting" button.
  • the operator 40 simply presses the "automatic” button, the photographed image including the size information is automatically saved.
  • the projection device 100 is a device that projects the projection image 70 (projection images 70a to 70f) toward the installation surface (ceiling) 35 on which the object 31 is installed.
  • the measurement unit 121 measures the distance from the projection device 100 to the installation surface 35 .
  • Projection unit 123 projects projection image 70 toward installation surface 35 .
  • the changing unit 124 changes at least one of the position of the projection unit 123 and the position of the lens 122 along the direction in which the projection unit 123 projects.
  • the CPU 111 calculates size information indicating the size of the projection image 70 projected onto the installation surface 35 based on the distance, the position of the projection unit 123 and the position of the lens 122 .
  • an image of any size can be projected onto the installation surface (ceiling) 35, and the size of the target object 31 can be easily measured by aligning the size of the target object 31 with the size of the projected image 70. .
  • the projection image can be projected according to the size of the device to be installed. As a result, it is also possible to take an image so that the size of the newly installed equipment after installation can be known. Furthermore, by using the size information calculated by the projection device 100, it is possible to prevent mistakes in recording the size due to handwriting, and to improve work efficiency.
  • the display unit 221 displays the photographed image and prompts for instruction input.
  • the projection device 100 causes the changing unit 124 to change the positions of the projection unit 123 and the lens 122 based on the instruction input. By doing so, the operator 40 can adjust the positions of the projection unit 123 and the lens 122 while viewing the screen of the terminal 200, and can measure the size of the target object 31 only by operating the terminal 200. can.
  • the projection device 100 extracts the outline of the target object 31 and the outline of the projected image 70 included in the captured image.
  • the projection device 100 causes the changing unit 124 to change the positions of the projection unit 123 and the lens 122 so that the outline of the target object 31 and the outline of the projection image 70 overlap.
  • the operator 40 can measure the size of the target object 31 only by operating the terminal 200 without adjusting the positions of the projection unit 123 and the lens 122 .
  • the projection device 100 transmits size information to the terminal 200, and the terminal 200 stores the captured image captured by the camera 216 and the size information when the captured image was captured.
  • the projection device 100 and the terminal 200 by linking the projection device 100 and the terminal 200 and integrating image shooting and size information recording, it is possible to prevent recording errors due to handwriting, improve work efficiency, and organize information after field surveys. can save time.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Focusing (AREA)
PCT/JP2021/047933 2021-12-23 2021-12-23 投射装置および投射システム WO2023119570A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2023568946A JP7551009B2 (ja) 2021-12-23 2021-12-23 投射システム
PCT/JP2021/047933 WO2023119570A1 (ja) 2021-12-23 2021-12-23 投射装置および投射システム
CN202180105136.7A CN118525185A (zh) 2021-12-23 2021-12-23 投射装置和投射系统

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