JP2010263466A - Inspection apparatus for manual image reading apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inspection apparatus capable of readily inspecting relative positional relation between an imaging part and a position detector, in a manual type image reading apparatus. <P>SOLUTION: An inspection apparatus 20 includes an inspection base 230 that forms an inspection plane 240, on which a mouse scanner 40 is mounted; a moving part 250, that moves the mouse scanner 40 mounted on the inspection plane 240; a gap 246, that forms a linear gap along each side of a rectangle and blocks the position detection by the position detector 420; and a reference line 248, including a plurality of lines substantially parallel to the respective sides of the rectangle formed by the gap 246, and which is drawn at a position where the reference line can be imaged by the imaging part 430, when the position detection by the position detector 420 is blocked by the gap 246. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an inspection apparatus for inspecting a manual image reading apparatus (mouse scanner).

  2. Description of the Related Art Conventionally, as an image reading device (scanner) that reads an original, also called a handy method, a manual image reading device that reads an original by manually moving the original is known (Patent Document 1). The manual image reading apparatus includes an imaging unit that captures an image of a document, and a position detection unit that detects a relative position with respect to the document. The imaging data captured by the imaging unit, and the position where the imaging data is captured Is acquired in association with position data indicating. Image data representing a document can be generated by combining a plurality of image data corresponding to the position on the document using the image data and the position data acquired by the manual image reading apparatus. Therefore, a shift in the relative positional relationship between the imaging unit and the position detection unit in the manual image reading apparatus causes distortion in the read image.

JP 11-345074 A

  However, conventionally, as a part of the calibration operation (calibration) of the manual image reading apparatus, sufficient examination has been made on inspecting the relative positional relationship between the imaging unit and the position detection unit in the manual image reading apparatus. It wasn't done.

  In view of the above-described problems, an object of the present invention is to provide an inspection apparatus that can easily inspect a relative positional relationship between an imaging unit and a position detection unit in a manual image reading apparatus.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 An inspection apparatus according to Application Example 1 is an inspection apparatus that inspects a manual image reading apparatus that includes an imaging unit that captures an image of a document and a position detection unit that detects a relative position of the document. An inspection table for forming an inspection plane on which the manual image reading device is placed; a moving unit for moving the manual image reading device mounted on the inspection plane substantially along the inspection plane; and the inspection plane. An air gap that forms a linear air gap along each side of the rectangle, the air gap obstructing position detection by the position detector when the manual image reader is moved by the moving part; A reference line that is provided on the inspection plane and includes a plurality of line segments that are substantially parallel to each side of the rectangle formed by the gap, and the position detection by the position detector is hindered by the gap. By the imaging unit Characterized in that it comprises a reference line drawn on the imaging positions. According to the inspection apparatus of Application Example 1, since the relative positional relationship between the gap and the reference line on the inspection plane is constant, the manual image reading device placed on the inspection plane is moved in each direction. However, when the position detection by the position detection unit is hindered, the image data captured by the imaging unit is acquired, and based on the position of the reference line in the image data, the relative relationship between the imaging unit and the position detection unit is acquired. A realistic positional relationship can be determined. Therefore, the relative positional relationship between the imaging unit and the position detection unit in the manual image reading apparatus can be easily inspected.

  Application Example 2 The inspection apparatus according to Application Example 1 further includes an image acquisition unit that acquires image data captured by the imaging unit when position detection by the position detection unit is inhibited, and the image acquisition unit And a position determination unit that determines a relative positional relationship between the imaging unit and the position detection unit based on the position of the reference line in the image data acquired by the above. According to the inspection apparatus of Application Example 2, since the image data is acquired and the positional relationship is determined in the inspection apparatus, the relative positional relationship between the imaging unit and the position detection unit in the manual image reading apparatus is further increased. Can be easily inspected.

  Application Example 3 In the inspection apparatus according to Application Example 1 or Application Example 2, the gap portion may form a linear gap along a rectangle from which the central portions of the two long sides are deleted. According to the inspection device of Application Example 3, the rigidity of the inspection plane can be maintained without affecting the inspection.

  Application Example 4 In the inspection apparatus according to any one of Application Example 1 to Application Example 3, the reference line may be positioned inside a rectangle formed by the gap and may be a rectangle smaller than the rectangle. According to the inspection apparatus of the application example 4, the imaging unit and the position detection unit are based on the image data captured by the imaging unit when the position detection by the position detection unit is hindered without performing complicated calculation. Can be easily determined.

  Application Example 5 In the inspection apparatus according to any one of Application Examples 1 to 4, the position detection unit passes through the gap when the manual image reading device is moved by the moving unit. A deterring unit that deters movement of the manual image reading apparatus by the moving unit may be provided. According to the inspection apparatus of Application Example 5, since unnecessary movement of the manual image reading apparatus on the inspection plane is avoided, the processing time required for the inspection of the manual image reading apparatus can be shortened. Moreover, since the excessive movement of the manual image reading apparatus on the inspection plane is avoided, the manual image reading apparatus and the inspection apparatus can be prevented from being damaged.

  Application Example 6 The inspection apparatus according to any one of Application Example 1 to Application Example 5 is further configured such that when the manual image reading apparatus is moved by the moving unit, the manual image reading apparatus and the inspection plane are You may provide the holding | maintenance part which hold | maintains the distance between them substantially constant. According to the inspection apparatus of Application Example 6, it is possible to suppress the occurrence of an inspection error due to the manual image reading apparatus moving away from the inspection plane during movement.

  The form of the present invention is not limited to the inspection apparatus, but may be applied to other forms such as a control apparatus for controlling the inspection apparatus, a method for inspecting a manual image reading apparatus using the inspection apparatus, and a program for controlling the inspection apparatus. You can also. Further, the present invention is not limited to the above-described embodiments, and it is needless to say that the present invention can be implemented in various forms without departing from the spirit of the present invention.

It is explanatory drawing which shows the external appearance structure of a calibration system. It is explanatory drawing which mainly shows the detailed structure of a test | inspection plane. FIG. 3 is an explanatory diagram mainly showing a detailed configuration of an inspection plane in which a mouse scanner is moved leftward from the state shown in FIG. 2. FIG. 3 is an explanatory diagram mainly showing a detailed configuration of an inspection plane in which a mouse scanner is moved in the forward direction from the state shown in FIG. 2. It is explanatory drawing which shows the electrical structure of a calibration system. It is a flowchart which shows the calibration process which the personal computer of a calibration system performs. It is a flowchart which shows the calibration process which the personal computer of a calibration system performs.

  In order to further clarify the configuration and operation of the present invention described above, a calibration system to which the present invention is applied will be described below.

A. Example:
A1. Calibration system configuration:
FIG. 1 is an explanatory diagram showing an external configuration of the calibration system 10. The calibration system 10 is a system for performing calibration (calibration) of the mouse scanner 40 which is a manual image reading apparatus. In this embodiment, the calibration system 10 includes an inspection device 20 that inspects a mouse scanner 40 that is a calibration target device, and a personal computer 30 that controls the inspection and calibration of the mouse scanner 40.

  The inspection apparatus 20 of the calibration system 10 includes a base 210, a frame 220, an inspection table 230, a moving unit 250, and a guide 260.

  The base 210 of the inspection device 20 is a basic structure that handles the loads of the respective parts constituting the inspection device 20. In this embodiment, the base 210 is a metal plate material formed in a rectangular shape. The frame 220 of the inspection apparatus 20 is a support structure that is fixed to the base 210 and supports the inspection table 230.

  The inspection table 230 of the inspection apparatus 20 is a structure including an inspection plane 240 that is a structure for performing the inspection of the mouse scanner 40. The inspection of the mouse scanner 40 places the mouse scanner 40 on the inspection plane 240 of the inspection table 230. Implemented. In the present embodiment, the inspection table 230 is a metal plate formed in a rectangular shape having substantially the same size as the base 210, and is supported by the frame 220 substantially parallel to the base 210.

  In the description of the present embodiment, the direction toward the back of the paper surface of FIG. 1 along the short side of the rectangular inspection table 230 is set as the X-axis direction, and the long side of the inspection table 230 extends to the back of the paper surface of FIG. The direction to go is set as the Y-axis direction, and the direction from the base 210 to the inspection table 230 orthogonal to the X-axis direction and the Y-axis direction is set as the Z-axis direction. In the description of this embodiment, the positive direction on the X axis is called the right direction, the negative direction on the X axis is called the left direction, the positive direction on the Y axis is called the front direction, and the negative direction on the Y axis is called Called backwards.

  The inspection plane 240 of the inspection table 230 is a plane that is recessed substantially parallel to the upper surface 232 that faces upward (Z-axis direction) in the inspection table 230, and the inspection plane 240 is inspected with respect to the upper surface 232 around the inspection plane 240. A concave side surface 234 corresponding to the depth at which 240 is recessed is formed. The inspection plane 240 is a plane substantially perpendicular to the Z axis and substantially along the X axis direction and the Y axis direction, and the concave side surface 234 is a plane substantially along the Z axis substantially orthogonal to the inspection plane 240 and the upper surface 232. is there. Details of the structure of the inspection plane 240 will be described later.

  The moving unit 250 of the inspection apparatus 20 moves the mouse scanner 40 placed on the inspection plane 240 of the inspection table 230 substantially along the X-axis direction and the Y-axis direction. The moving unit 250 includes an X-axis moving table 251, a Y-axis moving table 252, a connecting unit 254, a moving plate 256, and a mouse holding unit 258.

  The moving plate 256 of the moving unit 250 is a plate material that has an opening 2562 that fits into the mouse scanner 40 and is smaller than the inspection plane 240 of the inspection table 230. In this embodiment, the mouse scanner 40 is placed on the inspection plane 240 of the inspection table 230 in a state where the mouse scanner 40 is fitted in the opening 2562 of the moving plate 256. In the present embodiment, the moving plate 256 is formed in a rectangular shape that is movable in the X-axis direction and the Y-axis direction on the inspection plane 240 of the inspection table 230. In this embodiment, the moving plate 256 is made of synthetic resin.

  The connecting unit 254 of the moving unit 250 is a structure that connects the moving plate 256 to the X-axis moving table 251 and the Y-axis moving table 252. The mouse holding unit 258 of the moving unit 250 is a mechanism that holds the mouse scanner 40 by pressing the mouse scanner 40 fitted into the opening 2562 of the moving plate 256 toward the inspection plane 240.

  The X-axis moving table 251 of the moving unit 250 is a mechanism that moves the moving plate 256 relative to the inspection plane 240 of the inspection table 230 in the X-axis direction via the connecting unit 254. The moving table 252 is a mechanism that moves the moving plate 256 relative to the inspection plane 240 of the inspection table 230 in the Y-axis direction via the connecting portion 254. When the X-axis moving table 251 and the Y-axis moving table 252 move the moving plate 256 via the connecting portion 254, the mouse scanner 40 on the moving plate 256 moves on the inspection plane 240 of the inspection table 230. In this embodiment, each of the X-axis moving table 251 and the Y-axis moving table 252 includes a step motor (not shown) that operates based on a control signal from the personal computer 30.

  The guide 260 of the inspection apparatus 20 prevents the moving plate 256 from being lifted from the inspection plane 240 when the moving plate 256 of the moving unit 250 moves on the inspection plane 240 of the inspection table 230. It functions as a holding unit that holds the distance to the inspection plane 240 substantially constant. In this embodiment, the guide 260 is a rectangular plate material fixed to the upper surface 232 of the inspection table 230 in a state of protruding above the inspection plane 240. In the present embodiment, four guides 260 are provided on the inspection table 230 corresponding to the four corners of the rectangular moving plate 256.

  FIG. 2 is an explanatory diagram mainly showing the detailed structure of the inspection plane 240. In FIG. 2, the inspection plane 240 is shown in a top view of the inspection table 230 viewed from the upper surface 232. In FIG. 2, the moving plate 256 projected from the Z-axis direction onto the inspection plane 240 is illustrated using a one-dot chain line, and the guide 260 projected onto the inspection plane 240 from the Z-axis direction overlaps the inspection plane 240 using a broken line. It is shown together.

  FIG. 2 illustrates a state in which the mouse scanner 40 fitted in the opening 2562 of the moving plate 256 is projected onto the inspection plane 240 from the Z-axis direction. The mouse scanner 40 includes a position detection unit 420 that detects a relative position with respect to the document and an imaging unit 430 that captures an image of the document. In FIG. 2, the position detection unit 420 and the imaging unit 430 of the mouse scanner 40 include It is shown superimposed on the inspection plane 240 using a one-dot chain line.

  The imaging unit 430 of the mouse scanner 40 is an imaging device that irradiates a document with light and captures a rectangular area in the document. In FIG. Rising hatching is given. In this embodiment, the imaging unit 430 includes a CMOS (Complementary Metal Oxide Semiconductor) sensor having a plurality of photodiodes arranged in 640 columns × 480 rows, and is provided at the center of the mouse scanner 40.

  The position detection unit 420 of the mouse scanner 40 is an optical position detection device that irradiates a document with laser light and detects the position based on the intensity of the reflected light. In this embodiment, the mouse scanner 40 includes four position detection units 420, and each of the four position detection units 420 is provided on the left front, right front, left rear, and right rear of the imaging unit 430. In the description of the present embodiment, when the position detection unit of the mouse scanner 40 is generally indicated, the reference numeral “240” is used, and when the four position detection units are individually indicated, the position detection located at the left front is detected. The position “240a” is used for the part, the sign “240b” is used for the position detector located right front, the sign “240c” is used for the position detector located rear left, and the position located right rear A symbol “240d” is used for the detection unit.

  As shown in FIG. 2, the inspection plane 240 of the inspection table 230 is a cross-shaped plane obtained by extending each side vertically and horizontally from a rectangle that is slightly larger than the moving plate 256. A gap 246 and a reference line 248 are provided inside the positioned rectangle.

  The gap portion 246 of the inspection plane 240 forms a linear gap along each side of the rectangle, that is, a gap constituting at least a part of each side of the rectangle. Accordingly, the gap 246 inhibits the position detection by the position detection unit 420 of the mouse scanner 40 when the mouse scanner 40 fitted to the moving plate 256 of the moving unit 250 moves. In FIG. 2, the gap formed by the gap portion 246 is hatched upward. In the present embodiment, the gap portion 246 includes a front gap portion 246a that forms a gap in the front direction in the rectangle in which the central portions of the two long sides along the Y axis are deleted, and a rear direction in the rectangle. And a rear gap portion 246b that forms a gap constituting the portion, and forms a rectangle that is slightly smaller than a rectangle located at the center of the cross shape on the inspection plane 240. In the present embodiment, the gap formed by the gap portion 246 is a hole that penetrates the inspection table 230, but may be a groove that is recessed with respect to the inspection plane 240 in other embodiments.

  The reference line 248 of the inspection plane 240 includes a plurality of line segments that are substantially parallel to the respective sides of the rectangle formed by the gap 246, and the position detection by the position detection unit 420 of the mouse scanner 40 is inhibited by the gap 246. In this case, the image is drawn at a position that can be imaged by the imaging unit 430 of the mouse scanner 40. In the present embodiment, the reference line 248 is a rectangular frame configured by four line segments each substantially parallel to each side of the rectangle configured by the gap portion 246. The image capturing unit 430 of the mouse scanner 40 surrounds the imaging region with the moving plate 256 positioned at the center of the cross shape on the inspection plane 240 located inside.

  FIG. 3 is an explanatory diagram mainly showing a detailed configuration of the inspection plane 240 in which the mouse scanner 40 is moved leftward from the state shown in FIG. FIG. 3 is a top view of the inspection table 230 as viewed from the upper surface 232, and is the same as FIG. 2 except that the moving plate 256 and the mouse scanner 40 are moved leftward.

  As shown in FIG. 3, when the mouse scanner 40 is moved leftward from the state shown in FIG. 2, the position detector 420 a of the mouse scanner 40 moves to the left along the Y axis in the front gap 246 a of the inspection plane 240. In the linear gap, a lift-up indicating that the mouse scanner 40 is lifted from the document is detected without obtaining sufficient reflected light for position detection. On the other hand, the position detector 420c of the mouse scanner 40 detects lift-up in the left linear gap along the Y axis in the rear gap 246b of the inspection plane 240. As shown in FIG. 3, when the mouse scanner 40 is moved leftward from the state shown in FIG. 2 and the position detectors 420 a and 420 c of the mouse scanner 40 detect lift-up, the imaging unit 430 of the mouse scanner 40. Is approximately bisected in the Y-axis direction by the left-hand line segment along the Y-axis in the reference line 248.

  Contrary to FIG. 3, when the mouse scanner 40 is moved to the right from the state shown in FIG. 2, the position detector 420 b of the mouse scanner 40 moves to the right along the Y axis in the front gap 246 a of the inspection plane 240. Lift-up is detected in the linear gap. On the other hand, the position detector 420d of the mouse scanner 40 detects lift-up in the right linear gap along the Y axis in the rear gap 246b of the inspection plane 240. Contrary to FIG. 3, when the mouse scanner 40 is moved rightward from the state shown in FIG. 2 and the position detectors 420b and 420d of the mouse scanner 40 detect lift-up, the imaging unit 430 of the mouse scanner 40 is detected. Is approximately bisected in the Y-axis direction by the right-hand line segment along the Y-axis in the reference line 248.

  FIG. 4 is an explanatory diagram mainly showing a detailed configuration of the inspection plane 240 in which the mouse scanner 40 is moved in the forward direction from the state shown in FIG. FIG. 4 is a top view of the inspection table 230 as seen from the top surface 232, and is the same as FIG. 2 except that the moving plate 256 and the mouse scanner 40 are moved in the forward direction.

  As shown in FIG. 4, when the mouse scanner 40 is moved in the forward direction from the state shown in FIG. 2, the position detectors 420 a and 420 b of the mouse scanner 40 are along the X axis in the front gap 246 a of the inspection plane 240. A lift-up is detected in the linear gap on the front side. As shown in FIG. 4, when the mouse scanner 40 is moved forward from the state shown in FIG. 2 and the position detectors 420a and 420b of the mouse scanner 40 detect lift-up, the imaging unit 430 of the mouse scanner 40 is displayed. Is approximately bisected in the X-axis direction by a front line segment along the X-axis in the reference line 248.

  Contrary to FIG. 4, when the mouse scanner 40 is moved backward from the state shown in FIG. 2, the position detectors 420 c and 420 d of the mouse scanner 40 are aligned with the X axis in the rear gap 246 b of the inspection plane 240. A lift-up is detected in the linear gap on the rear side along. Contrary to FIG. 4, when the mouse scanner 40 is moved backward from the state shown in FIG. 2 and the position detectors 420 c and 420 d of the mouse scanner 40 detect lift-up, the imaging unit 430 of the mouse scanner 40. Is substantially bisected in the X-axis direction by a rear line segment along the X-axis in the reference line 248.

  FIG. 5 is an explanatory diagram showing an electrical configuration of the calibration system 10. The personal computer 30 of the calibration system 10 includes a movement control unit 312, an image acquisition unit 314, a position determination unit 316, and a device interface 380.

  The movement control unit 312 of the personal computer 30 controls the X-axis moving table 251 and the Y-axis moving table 252 of the moving unit 250 in the inspection apparatus 20 by outputting a control signal through the device interface 380.

  The image acquisition unit 314 of the personal computer 30 receives image data captured by the imaging unit 430 of the mouse scanner 40 when the position detection by the position detection unit 420 of the mouse scanner 40 is hindered from the mouse scanner 40 to the device interface 380. Get through.

  The position determination unit 316 of the personal computer 30 is based on the position of the reference line 248 in the image data acquired by the image acquisition unit 314, and the relative position between the position detection unit 420 and the imaging unit 430 of the mouse scanner 40. Determine the relationship.

  The device interface 380 of the personal computer 30 is electrically connected to the inspection device 20 and the mouse scanner 40. In the present embodiment, the device interface 380 includes an interface conforming to the USB (Universal Serial Bus) standard as an interface connected to the mouse scanner 40.

  In this embodiment, each function of the movement control unit 312, the image acquisition unit 314, and the position determination unit 316 in the personal computer 30 is operated by a central processing unit (hereinafter referred to as “CPU”) based on a program. However, in another embodiment, at least one of the functions of the personal computer 30 may be realized by operating the electronic circuit of the personal computer 30 based on its physical circuit configuration.

  The mouse scanner 40 to be calibrated includes a control unit 410, a memory 470, a device interface 480, and an operation reception unit 490 in addition to the position detection unit 420 and the imaging unit 430. The control unit 410 of the mouse scanner 40 controls each unit of the mouse scanner 40. The memory 470 of the mouse scanner 40 is a non-volatile memory and stores a calibration value for calibrating the mouse scanner 40. In this embodiment, the device interface 480 of the mouse scanner 40 is an interface that conforms to the USB standard, and is electrically connected to a computer that reads a document in cooperation with the mouse scanner 40. The operation reception unit 490 of the mouse scanner 40 is a user interface that receives an operation input from a user who operates the mouse scanner 40, and includes a push button and a scroll button in this embodiment.

A2. Calibration system operation:
6 and 7 are flowcharts showing the calibration process (step S10) executed by the personal computer 30 of the calibration system 10. In this embodiment, when receiving an instruction input from an operator who inspects the mouse scanner 40, the personal computer 30 starts the calibration process (step S10).

  When the calibration process (step S10) is started, the personal computer 30 moves the moving plate 256 in the inspection apparatus 20 to the reference position shown in FIG. 2, and based on the signal output from the position detection unit 420 of the mouse scanner 40. Then, it is confirmed that the mouse scanner 40 is properly attached to the inspection apparatus 20 (step S100).

  After confirming the attachment of the mouse scanner 40 (step S100), the personal computer 30 selects one of the four position detectors 420 as an inspection target (step S200). In this embodiment, the personal computer 30 selects the position detection unit 420 to be inspected in the order of the position detection units 420a, 420b, 420c, and 420d.

  After selecting the position detection unit 420 as the inspection target (step S200), the personal computer 30 operates as the movement control unit 312 to move the mouse scanner 40 attached to the moving plate 256 to the inspection plane 240 in the X-axis direction. The relative movement is made (step S302). In this embodiment, the personal computer 30 moves the mouse scanner 40 to the left in the X-axis direction when the inspection target is the left front position detection unit 420a and the left rear position detection unit 420c. In the case of the right position detection unit 420b and the right rear position detection unit 420d, the mouse scanner 40 is moved to the right in the X-axis direction.

  When the mouse scanner 40 is moved in the X-axis direction (step S302), when the position detection unit 420 selected as the inspection target overlaps the gap 246, that is, the position detection unit 420 selected as the inspection target. Detects the lift-up (step S304: “YES”), the personal computer 30 operates as the image acquisition unit 314, so that when the position detection unit 420 detects the lift-up, the imaging unit 430 of the mouse scanner 40 is detected. The image data imaged by is acquired (step S306).

  After acquiring image data by lift-up during movement in the X-axis direction (step S306), the personal computer 30 operates as the movement control unit 312 to set the mouse scanner 40 attached to the moving plate 256 to the reference position. Move again (step S308).

  After moving the mouse scanner 40 to the reference position (step S308), the personal computer 30 operates as the movement control unit 312 to move the mouse scanner 40 attached to the moving plate 256 to the inspection plane 240 in the Y-axis direction. The relative movement is made (step S402). In this embodiment, the personal computer 30 moves the mouse scanner 40 forward in the Y-axis direction when the inspection target is the left front position detection unit 420a and the right front position detection unit 420b, and the inspection target is left rear. In the case of the position detector 420c and the right rear position detector 420d, the mouse scanner 40 is moved backward in the Y-axis direction.

  When the mouse scanner 40 is moved in the Y-axis direction (step S402), when the position detection unit 420 selected as the inspection target overlaps the gap 246, that is, the position detection unit 420 selected as the inspection target. When the position detection unit 420 detects the lift-up, the personal computer 30 operates as the image acquisition unit 314 so that the imaging unit 430 of the mouse scanner 40 detects the lift-up (step S404: “YES”). The image data picked up by is acquired (step S406).

  After acquiring image data by lift-up during movement in the Y-axis direction (step S406), the personal computer 30 operates as the movement control unit 312 so that the mouse scanner 40 attached to the moving plate 256 is set to the reference position. Move again (step S408).

  The personal computer 30 operates as the position determination unit 316 after acquiring the image data captured during movement in the X-axis direction and the Y-axis direction for all the position detection units 420 (step S500: “YES”). Thus, the relative positional relationship between the position detection unit 420 and the imaging unit 430 is determined based on the position of the reference line 248 in the image data captured during movement in the X-axis direction and the Y-axis direction ( Step S602). In the present embodiment, the personal computer 30 uses the position detection unit 420 based on the distance between the centroid in the image data captured during movement in the X-axis direction and the Y-axis direction and the reference line 248 in the image data. And the relative positional relationship between the imaging unit 430 and the imaging unit 430 are determined.

  After determining the relative positional relationship between the position detection unit 420 and the imaging unit 430 (step S602), the personal computer 30 performs calibration to calibrate the position detection unit 420 of the mouse scanner 40 based on the positional relationship. The value is calculated (step S604), and the calibration value is registered in the memory 470 of the mouse scanner 40 (step S606). Thereafter, the personal computer 30 ends the calibration process (step S10).

A3. effect:
According to the inspection apparatus 20 described above, since the relative positional relationship between the gap 246 and the reference line 248 on the inspection plane 240 is constant, the mouse scanner 40 placed on the inspection plane 240 is moved in each direction. The image data captured by the imaging unit 430 when the position detection by the position detection unit 420 is hindered while being moved is acquired, and based on the position of the reference line in the image data, the imaging unit 430 and the position detection unit A relative positional relationship with 420 can be determined. Therefore, the relative positional relationship between the imaging unit 430 and the position detection unit 420 in the mouse scanner 40 can be easily inspected.

  Further, by using the personal computer 30 having the functions of the movement control unit 312, the image acquisition unit 314, and the position determination unit 316, the relative positional relationship between the imaging unit 430 and the position detection unit 420 in the mouse scanner 40. Can be more easily inspected.

  In addition, the gap portion 246 includes a front gap portion 246a and a rear gap portion 246b, and forms a linear gap that forms a rectangle in which the central portions of the two long sides are deleted, so that the inspection is not affected. The rigidity of the inspection plane 240 can be maintained.

  Further, since the reference line 248 is located inside the rectangle formed by the gap portion 246 and forms a rectangle smaller than the rectangle, the position detection unit 420 can detect the position without performing complicated calculation. It is possible to easily determine the relative positional relationship between the imaging unit 430 and the position detection unit 420 based on the image data captured by the imaging unit 430 when the image is inhibited.

  The concave side surface 234 provided on the inspection plane 240 allows the movement of the mouse scanner 40 by the moving unit 250 after the position detecting unit 420 has passed through the gap 246 when the mouse scanner 40 is moved by the moving unit 250. Since it functions as a deterrence unit for deterring, unnecessary movement of the mouse scanner 40 on the inspection plane 240 is avoided, so that the processing time required for the inspection of the mouse scanner 40 can be shortened. Further, according to the recess side surface 234, since the excessive movement of the mouse scanner 40 on the inspection plane 240 is avoided, the mouse scanner 40 and the inspection apparatus 20 can be prevented from being damaged.

  The guide 260 provided on the examination table 230 functions as a holding unit that holds the distance between the mouse scanner 40 and the examination plane 240 substantially constant when the mouse scanner 40 is moved by the moving unit 250. Therefore, it is possible to suppress the occurrence of an inspection error due to the mouse scanner 40 moving away from the inspection plane 240 during movement.

B. Other embodiments:
The embodiments of the present invention have been described above. However, the present invention is not limited to these embodiments, and can of course be implemented in various forms without departing from the spirit of the present invention. is there.

  For example, in this embodiment, the movement of the mouse scanner 40 by the X-axis moving table 251 and the Y-axis moving table 252 is controlled by the personal computer 30, but in other embodiments, the X-axis moving table 251 and the Y-axis moving table 252 are used. The movement of at least one of the above may be performed manually.

  In the present embodiment, the inspection apparatus 20 and the mouse scanner 40 are controlled using the personal computer 30. However, in another embodiment, the inspection apparatus 20 includes the movement control unit 312, the image acquisition unit 314, and the position determination unit 316. Various functional elements corresponding to the device interface 380 may be provided.

  In the present embodiment, the positional relationship between the mouse scanner 40 and the inspection plane 240 is relatively moved by moving the mouse scanner 40 while the inspection plane 240 is fixed. In this case, the inspection plane 240 may be moved while the mouse scanner 40 is fixed, or both the mouse scanner 40 and the inspection plane 240 may be moved.

  Further, the gap 246 may form a linear gap that constitutes at least a part of each side of the rectangle corresponding to the position detection unit 420 of the mouse scanner 40. In other embodiments, the gap 246 All of each side may be continuous, or a part of each side in the rectangle may be separated.

  Further, the reference line 248 may include a plurality of line segments that are substantially parallel to the sides of the rectangle formed by the gap 246 corresponding to the imaging unit 430 of the mouse scanner 40. In other embodiments, The reference line 248 may be formed in a cross shape with two line segments, or a plurality of line segments constituting the reference line 248 may be separated from each other.

DESCRIPTION OF SYMBOLS 10 ... Calibration system 20 ... Inspection apparatus 30 ... Personal computer 40 ... Mouse scanner 210 ... Base 220 ... Frame 230 ... Inspection table 232 ... Upper surface 234 ... Concave side surface 240 ... Inspection plane 246 ... Gap part 246a ... Front gap part 246b ... Back Gaps 248 ... Reference line 250 ... Moving unit 254 ... Connecting unit 256 ... Moving plate 258 ... Mouse holding unit 260 ... Guide 312 ... Movement control unit 314 ... Image acquisition unit 316 ... Position determination unit 380 ... Device interface 410 ... Control unit 420 Position detection unit 420a Position detection unit 420b Position detection unit 420c Position detection unit 420d Position detection unit 430 Imaging unit 470 Memory 480 Device interface 490 Operation reception unit 2562 Opening

Claims (6)

An inspection apparatus for inspecting a manual image reading apparatus including an imaging unit that images a document and a position detection unit that detects a relative position of the document,
An inspection table for forming an inspection plane on which the manual image reading device is mounted;
A moving unit that moves the manual image reading device placed on the inspection plane substantially along the inspection plane;
A gap portion provided on the inspection plane and forming a linear gap along each side of the rectangle, wherein the position detection unit detects the position when the manual image reading apparatus is moved by the moving unit. Voids that inhibit
A reference line that is provided on the inspection plane and includes a plurality of line segments that are substantially parallel to each side of the rectangle formed by the gap, and when the position detection by the position detection unit is inhibited by the gap. An inspection apparatus comprising: a reference line drawn at a position that can be imaged by the imaging unit. The inspection apparatus according to claim 1, further comprising:
An image acquisition unit that acquires image data captured by the imaging unit when detection of a position by the position detection unit is inhibited;
An inspection apparatus comprising: a position determination unit that determines a relative positional relationship between the imaging unit and the position detection unit based on a position of a reference line in the image data acquired by the image acquisition unit.   The inspection device according to claim 1, wherein the gap portion forms a linear gap along a rectangle from which a central portion of two long sides is deleted.   The inspection apparatus according to any one of claims 1 to 3, wherein the reference line is located inside a rectangle formed by the gap and forms a rectangle smaller than the rectangle.   Furthermore, when the manual image reading device is moved by the moving unit, a suppression unit is provided that suppresses the movement of the manual image reading device by the moving unit after the position detecting unit has passed through the gap. The inspection apparatus according to any one of claims 1 to 4.   6. A holding unit that holds a distance between the manual image reading device and the inspection plane substantially constant when the manual image reading device is moved by the moving unit. The inspection device according to any one of the above.

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