JP2009296162A - Portable imaging apparatus and image processing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable imaging apparatus which can improve portability by achieving miniaturization, and to provide an image processing system with the portable imaging apparatus. <P>SOLUTION: The portable imaging apparatus 10 can adjust a distance from a camera unit 11 to a photographing object to an arbitrary distance irrespective of a distance from a fixed point of a mounting unit 13 to the photographing object since a flexible unit 14 is freely prolonged or shortened. Therefore, the photographing object can be arranged in a suitable size within an angle of field even if zoom-in or zoom-out is not made for the photographing object. Moreover, a user can shorten the flexible unit 14 at a time that the apparatus is not used than a time that it is used, since the flexible unit 14 is freely extended or shortened. Here, the apparatus is foldable since the camera unit 11, a first arm member 141, a second arm member 142, a first base member 131 and a second base member 132 are connected in parallel by an axis one another. The apparatus can be miniaturized by the way. Therefore, the apparatus can improve portability. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a portable imaging device that captures an imaging target such as a document while attached to a display or the like of an information processing device, for example, and an image processing system including the portable imaging device.

  Conventionally, handy scanners, digital cameras, and the like have been proposed as portable imaging devices.

  The handy scanner is often carried with an information processing apparatus such as a laptop PC. In use, the handy scanner is connected to an information processing apparatus and images an imaging target such as a document. Then, a captured image signal corresponding to the imaging target is output from the handy scanner to the information processing apparatus. In the information processing apparatus, predetermined image processing is performed on the captured image signal, and captured image data corresponding to the imaging target is generated.

  However, the weight of the handy scanner is comparable to the weight of the laptop PC. For this reason, it is burdensome for a user to carry a portable scanner. In addition, it is difficult for the user to secure the installation location of both the handy scanner and the laptop PC at a conference table or at a customer's destination or a business trip destination.

  Further, as an alternative to the handy scanner, it is conceivable that the user carries the digital camera and uses the digital camera when taking an image of an imaging target such as a document.

  However, it is difficult to image an imaging target such as a document from the front direction. In addition, camera shake may occur when imaging an imaging target. For this reason, the user needs to fix the digital camera with a tripod or the like and image the imaging target.

  In recent years, an information processing apparatus having a scanner function has been proposed, and examples thereof are disclosed in Patent Documents 1 and 2 below.

  The information processing apparatus disclosed in Patent Document 1 includes a lid portion having a display and a main body portion having a keyboard, and the lid portion is provided with a PC card slot. When imaging an imaging target, a user mounts a PC card camera in a PC card slot, and the PC card camera takes a picture of a person who is operating the information processing apparatus, such as a user.

  However, in the information processing apparatus disclosed in Patent Document 1, when the imaging target is, for example, a document, the imaging target such as the document is placed on, for example, a table where the information processing apparatus is installed. . For this reason, it is difficult to image an imaging target such as a document from the front direction. In addition, in order to adjust the distance between the PC card camera and an imaging target such as a document to the focal length of the PC card camera, for example, the arrangement position of the imaging target such as a document must be changed.

  In addition, the information processing apparatus disclosed in Patent Document 2 includes a laptop PC housing including a lighting device support mechanism that supports the lighting device, a digital camera, and a digital camera support mechanism. In the information processing device disclosed in Patent Document 2, the illumination device support mechanism, the digital camera, and the digital camera support mechanism are attached so that the external shape and size of the laptop PC housing do not change. . In such an information processing apparatus disclosed in Patent Document 2, an illuminating device, an illuminating device support mechanism, a digital camera, and a digital camera support mechanism are used to image a document as an imaging target. The imaging result is taken into the laptop PC. Here, since the digital camera support mechanism can be expanded and contracted, the distance between the digital camera and the imaging target can be adjusted to the focal length of the digital camera. Further, the digital camera can be rotated with respect to the digital camera support mechanism, that is, the orientation of the digital camera relative to the imaging target such as a document can be changed, so that the imaging target can be imaged from the front direction.

JP 2000-137544 A JP 2000-194450 A

  However, the information processing apparatus disclosed in Patent Document 2 is a combination of the information processing apparatus and a digital camera. In the information processing apparatus disclosed in Patent Document 2, the digital camera can be removed from the information processing apparatus. However, even if the digital camera is removed from the information processing apparatus, the digital camera is connected to another information processing apparatus. Cannot be used by connecting to a digital camera, so the versatility of digital cameras is low. That is, the digital camera of Patent Document 2 should normally be carried with a specific information processing apparatus. For this reason, the portability of the digital camera of Patent Document 2 was not good.

  The present invention has been made in view of the above, and an object of the present invention is to obtain a portable imaging device capable of improving portability by downsizing and an image processing system including the portable imaging device. To do.

  In order to solve the above-described problems and achieve the object, the portable imaging device according to the present invention is a captured image data generation unit that generates captured image data corresponding to an imaging target based on an input captured image signal. And projective conversion to a captured image corresponding to the generated captured image data so that the captured image corresponding to the generated captured image data becomes a captured image of the imaging target captured from the front direction of the imaging range. A portable imaging device that can be attached to an information processing device comprising: a projecting conversion unit that performs a projection conversion; and a display unit that displays a captured image subjected to the projective transformation, and an imaging unit that images the imaging target; An output unit that outputs the captured image signal corresponding to the captured imaging target to the information processing apparatus, and a detachable attachment to the fixed target, and the imaging unit is fixed to the fixed target. And two or more arm shaft members parallel to each other and at least two or more arm members respectively connected by the arm shaft members. One end of both ends of the entire arm member is connected to the imaging means by an imaging side shaft member parallel to the arm shaft member, and the other end is a fixed side shaft parallel to the arm shaft member Expansion and contraction means connected to the fixing means by a member and made to be extendable so that the length of the entire arm member between the one end and the other end can be changed. It is said.

  In the portable imaging device, the expansion / contraction means has two arm members, one of the two arm members has the one end, and the other arm member The one arm member and the other arm member are rotatably supported by the arm shaft member and held in a supported state, and the one arm member and the imaging unit are provided. Is supported rotatably by the imaging side shaft member and held in a supported state, and the other arm member and the fixing means are rotatably supported by the fixed side shaft member and supported. It is preferred that it be retained.

  In the portable imaging device, it is preferable that the two arm members can be overlapped.

  In the portable imaging device, the fixing unit includes two base members, and one of the two base members and the other base member have an axial direction that is the axis of the arm. The base shaft member parallel to the member is rotatably supported and the support state is maintained. The one base member is connected to the other end by the fixed-side shaft member, and the other base member It is preferable to have an engaging claw that engages with the fixed object on the opposite side.

  In the portable imaging device, it is preferable that the two base members can be overlaid.

  In the portable imaging apparatus, it is preferable that the other arm member and the fixing unit can be overlapped.

  In the portable imaging device, the imaging unit includes a flat board part and an imaging element mounted on the board part, and the board part can be overlapped with the one arm member. It is preferred that

  In the portable imaging device, the information processing apparatus includes a receiving unit that inputs the captured image signal by wireless communication, and the output unit includes a transmitting unit that outputs the captured image signal by wireless communication. It is preferred that

  An image processing system according to the present invention includes the above-described portable imaging device, captured image data generation means for generating captured image data corresponding to the imaging target based on the input captured image signal, Projection that performs projective transformation on the captured image corresponding to the generated captured image data so that the captured image corresponding to the generated captured image data becomes the captured image of the imaging target captured from the front direction of the imaging range. An information processing apparatus including a conversion unit and a display unit that displays the captured image subjected to the projective conversion is provided.

  In the image processing system, it is preferable that the fixed object is the display unit.

  Further, in the image processing system, the imaging target is a transparent document leaning on the display screen of the display unit, and the imaging unit is connected to the display screen via the transparent document leaning on the display screen. It is preferable that the display unit is arranged in an opposing position, and the entire area of the display screen is lit white.

  In the present invention, since the expansion / contraction means that connects the imaging means and the fixing means can be extended and contracted, for example, regardless of the distance from the fixing location where the fixing means is fixed to the fixing target to the imaging target The distance from the means to the imaging target can be adjusted to an arbitrary distance. For this reason, for example, there is an effect that the imaging target can be arranged in an appropriate size within the angle of view without providing the imaging unit with a function of zooming in and zooming out with respect to the imaging target. In addition, since the imaging means and the arm member, the two consecutive arm members, and the fixing means and the arm member are axially connected in parallel to each other, the apparatus can be folded. For this reason, the expansion / contraction means can be expanded and contracted. Therefore, when the user is not using the portable imaging device, the user can contract the expansion / contraction means more than when the portable imaging device is used. As a result, the apparatus can be reduced in size. Therefore, there is an effect that the portability of the apparatus can be improved.

  Further, in the present invention, since at least two of the imaging means, the two arm members of the expansion / contraction means, and the two arm members of the fixing means can be overlapped, the apparatus can be further downsized. There is an effect.

  Hereinafter, an embodiment of a portable imaging device according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by each following embodiment.

[Embodiment 1]
Hereinafter, the image processing system according to the first embodiment will be described. FIG. 1 shows a schematic side view of the portable imaging device according to the first embodiment. FIG. 2 is a top view schematically showing the portable imaging device according to the first embodiment. FIG. 3 shows a schematic side view of the portable imaging apparatus according to the first embodiment. FIG. 4 is a block diagram showing the image processing system according to the first embodiment. The image processing system 1 includes a portable imaging device 10 and an information processing device 20.

<Configuration of portable imaging device>
The portable imaging device 10 is attached to, for example, an information processing device 20 as a fixed target described later, and images the imaging target. The portable imaging device 10 includes a camera unit 11 as an imaging unit, an output unit 12 as an output unit, a fixing unit 13 as a fixing unit, and an expansion / contraction unit 14 as an expansion / contraction unit.

  The camera unit 11 captures an imaging target. The camera unit 11 is, for example, a camera such as a video camera or an electronic camera that includes an imaging element such as a CCD (Charge Coupled Device). In addition, the camera unit 11 may be constituted by, for example, a CMOS type image sensor. The camera unit 11 has a casing 111 formed in a shallow rectangular box shape. For this reason, the external appearance of the camera part 11 is made flat as a whole. More specifically, in the first embodiment, the camera unit 11 includes the housing 111, a sensor chip 112 on which an imaging element is mounted, and a lens 113 that forms an image of light from the imaging target with the sensor chip 112. An image processing chip 114 that performs predetermined image processing on the detection signal output from the sensor chip 112, and a printed circuit board 115 as a flat substrate portion on which the sensor chip 112 and the image processing chip 114 are mounted. Have. A sensor chip 112 is mounted on a mounting surface 116 that is one side in the thickness direction of the printed board 115, and a lens 113 is disposed on the optical axis of the sensor chip 112. When the sensor chip 112 detects light corresponding to the imaging target, the sensor chip 112 outputs a detection signal corresponding to the imaging target to the image processing chip 114. An image processing chip 114 is mounted on the mounting surface 116 of the printed board 115 at a location different from the sensor chip 112. In the image processing chip 114, predetermined correction processing such as white balance and exposure is performed on the detection signal transmitted from the sensor chip 112. In the first embodiment, the lens 113 is a single focus lens.

  The output unit 12 outputs a captured image signal corresponding to an imaging target imaged by the camera unit 11 to the information processing apparatus 20. In the first embodiment, the output unit 12 is a USB terminal. The output unit 12 is mounted on a printed circuit board 115 of the camera unit 11, and the output unit 12 is connected to the image processing chip 114 of the camera unit 11. In the first embodiment, the portable imaging device 10 is supplied with power from the information processing device 20 connected to the output unit 12 via the output unit 12 that is a USB terminal.

  The fixing unit 13 is for fixing the camera unit 11 to a fixing target. The fixing portion 13 has two base members.

  For example, in the first embodiment, the first base member 131 that is one of the two base members includes a back plate 131a and a pair of side plates 131b and 131c. The back plate 131a has a rectangular plate shape. A pair of side plates 131b and 131c are integrally provided at both ends in the width direction orthogonal to both the longitudinal direction and the thickness direction of the back plate 131a. The side plates 131b and 131c are parallel to each other. The back plate 131a extends toward one side in the thickness direction. The dimension between the pair of side plates 131b and the side plate 131c of the first base member 131 is such that a second arm member 142 described later is inserted between the side plate 131b and the side plate 131c, and the second arm is inserted into the first base member 131. The dimensions are such that the members 142 can be stacked. The side plate 131b and the side plate 131c have the same shape, and each is formed in a rectangular plate shape that is elongated in the longitudinal direction of the back plate 131a. That is, the first base member 131 has a substantially U-shaped cross section when viewed from the longitudinal direction of the back plate 131a. In other words, when viewed from the longitudinal direction of the back plate 131a, the first base member 131 has a U-shaped groove formed by the back plate 131a, the side plate 131b, and the side plate 131c. Further, the first base member 131 has an engaging claw 131d that engages with a fixed object. The engaging claw 131d is integrally provided at one end in the longitudinal direction of the back plate 131a. The engaging claw 131d is formed in, for example, a rectangular plate shape or a block shape. This engaging claw 131d protrudes in the opposite direction to the extending direction of the pair of side plates 131b and 131c with respect to the back plate 131a and is provided integrally with the back plate 131a. The side on which the engaging claws 131d protrude with respect to the back plate 131a is the side facing the second base member 132 described later. In the first embodiment, the engaging claw 131d is formed in a rectangular plate shape, and the thickness direction thereof is parallel to the longitudinal direction of the back plate 131a.

  On the other hand, the 2nd base member 132 which is the other base member among two base members is constituted from back board 132a and a pair of side plates 132b and 132c in this Embodiment 1, for example. The back plate 132a has a rectangular plate shape. The length of the back plate 132a in the longitudinal direction is approximately the same as the length of the back plate 131a in the longitudinal direction. A pair of side plates 132b and 132c are integrally provided at both ends in the width direction orthogonal to both the longitudinal direction and the plate thickness direction of the back plate 132a. The side plates 132b and 132c are parallel to each other. The back plate 132a extends toward one side in the thickness direction. The dimension between the pair of side plates 132b and the side plates 132c of the second base member 132 is such that the first base member 131 is inserted between the side plates 132b and 132c, and the first base member 131 is inserted into the second base member 132. The dimensions are such that can be stacked. The side plate 132b and the side plate 132c have the same shape, and each is formed in a rectangular plate shape that is elongated in the longitudinal direction of the back plate 132a. That is, the second base member 132 has a substantially U-shaped cross section when viewed from the longitudinal direction of the back plate 132a. In other words, when viewed from the longitudinal direction of the back plate 132a, the second base member 132 has a U-shaped groove formed by the back plate 132a, the side plate 132b, and the side plate 132c.

  Here, one end of the second base member 132 in the longitudinal direction is the other end of the first base member 131 opposite to the engaging claws 131d in the longitudinal direction by the base shaft member 15 whose axial direction is parallel to the width direction. Connected with the department. More specifically, the second base member 132 and the first base member 131 are configured such that the base shaft member 15 has one end in the longitudinal direction of the pair of side plates 132 b and 132 c of the second base member 132 and the first base member 131. The pair of side plates 131b and 131c are connected by being inserted through the other end in the longitudinal direction. The second base member 132 and the first base member 131 are the second base with respect to the first base member 131 unless the base shaft member 15 applies a rotational force of a certain level or more around the axis of the base shaft member 15. The member 132 is rotatably supported, for example, by being properly tightened so that the support state in which the rotation angle of the member 132 is constant is maintained. Here, when the second base member 132 is rotated around the axis of the base shaft member 15 so as to face the first base member 131, the first base member 131 moves to the side plate 132 b and the side plate 132 c of the second base member 132. Therefore, the second base member 132 and the first base member 131 can be overlapped with each other. In such a second base member 132, the engagement claw 131 d of the first base member 131 is fixed, for example, the display surface side of the monitor of the display unit of the information processing apparatus 20, more specifically, for example, the display surface side in the upper part of the monitor The fixing unit 13 can be fixed to the monitor of the information processing apparatus 20 by being arranged so as to interfere with the back side opposite to the display surface of the monitor while being engaged with the monitor. That is, the fixing unit 13 can be attached to and detached from the monitor of the information processing apparatus 20. In other words, the portable imaging device 10 can be attached to the information processing device 20.

  The expansion / contraction part 14 is for adjusting the distance between the camera part 11 and the imaging target. The telescopic part 14 has a plurality of, in the first embodiment, two arm members that are axially connected in series so as to be able to rotate on the same plane.

  For example, in the first embodiment, the first arm member 141 that is one of the two arm members includes a back plate 141a and a pair of side plates 141b and 141c. The back plate 141a has a rectangular plate shape. The length of the back plate 141a in the longitudinal direction is approximately the same as the length of the back plate 131a in the longitudinal direction. A pair of side plates 141b and 141c are integrally provided at both ends in the width direction orthogonal to both the longitudinal direction and the plate thickness direction of the back plate 141a, and these side plates 141b and 141c are parallel to each other. The back plate 141a extends toward one side in the thickness direction. The dimension between the pair of side plates 141b and the side plate 141c of the first arm member 141 is such that the casing 111 of the camera unit 11 is inserted between the side plate 141b and the side plate 141c, and the camera unit 11 enters the first arm member 141. The dimensions are such that the casings 111 can be stacked. The side plate 141b and the side plate 141c have the same shape, and each is formed in a rectangular plate shape that is elongated in the longitudinal direction of the back plate 141a. That is, the first arm member 141 has a substantially U-shaped cross section when viewed from the longitudinal direction of the back plate 141a. In other words, a U-shaped groove is formed in the first arm member 141 by the back plate 141a, the side plate 141b, and the side plate 141c when viewed from the longitudinal direction of the back plate 141a.

  Here, one end of the first arm member 141 in the longitudinal direction is connected to the base end of the casing 111 of the camera unit 11 by the imaging side shaft member 16 whose axial direction is parallel to the width direction. More specifically, the first arm member 141 and the housing 111 of the camera unit 11 are configured such that the imaging side shaft member 16 has one end in the longitudinal direction of the pair of side plates 141b and 141c of the first arm member 141 and the camera unit 11. It is connected by being inserted through the base end portion in the longitudinal direction. The first arm member 141 and the housing 111 of the camera unit 11 are configured so that the imaging side shaft member 16 applies a camera with respect to the first arm member 141 as long as a certain amount of rotational force is not applied around the axis of the imaging side shaft member 16. In order to maintain a support state in which the rotation angle of the casing 111 of the portion 11 is constant, the casing 111 is supported so as to be rotatable by being appropriately tightened, for example. Here, when the casing 111 of the camera unit 11 is rotated around the axis of the imaging side shaft member 16 so as to face the first arm member 141, the casing 111 of the camera unit 11 is moved to the side plate of the first arm member 141. You may enable it to penetrate between 141b and the side plate 141c. In this case, the housing 111 of the camera unit 11 and the first arm member 141 can be overlapped.

  On the other hand, the second arm member 142, which is the other arm member of the two arm members, is composed of a back plate 142a and a pair of side plates 142b and 142c in the first embodiment, for example. The back plate 142a has a rectangular plate shape. The length of the back plate 142a in the longitudinal direction is approximately the same as the length of the back plate 131a in the longitudinal direction. A pair of side plates 142b and 142c are integrally provided at both ends in the width direction orthogonal to both the longitudinal direction and the plate thickness direction of the back plate 142a, and these side plates 142b and 142c are parallel to each other. The back plate 142a extends toward one side in the thickness direction. The dimension between the pair of side plates 142b and 142c of the second arm member 142 is such that the first arm member 141 is inserted between the side plate 142b and the side plate 142c, and the first arm member 141 is inserted into the second arm member 142. The dimensions are such that can be stacked. The side plate 142b and the side plate 142c have the same shape, and each is formed in a rectangular plate shape that is elongated in the longitudinal direction of the back plate 142a. That is, the second arm member 142 has a substantially U-shaped cross section when viewed from the longitudinal direction of the back plate 142a. In other words, the U-shaped groove is formed in the second arm member 142 by the back plate 142a, the side plate 142b, and the side plate 142c when viewed from the longitudinal direction of the back plate 142a.

  Here, one longitudinal end of the second arm member 142 is connected to the other longitudinal end of the first arm member 141 by an arm shaft member 17 whose axial direction is parallel to the width direction. More specifically, the second arm member 142 and the first arm member 141 are configured such that the arm shaft member 17 has one end in the longitudinal direction of the pair of side plates 142b and 142c of the second arm member 142, and the first arm member 141. The pair of side plates 141b and 141c are connected to each other by being inserted into the other end in the longitudinal direction. The second arm member 142 and the first arm member 141 are the first arm with respect to the second arm member 142 unless the arm shaft member 17 applies a rotational force of a certain level or more around the axis of the arm shaft member 17. The member 141 is rotatably supported, for example, by being properly tightened so that the support state in which the rotation angle of the member 141 is constant is maintained. Here, when the first arm member 141 is rotated around the axis of the arm shaft member 17 so as to face the second arm member 142, the first arm member 141 moves to the side plate 142 b and the side plate 142 c of the second arm member 142. Therefore, the first arm member 141 and the second arm member 142 can be overlapped with each other. The telescopic part 14 composed of the first arm member 141 and the second arm member 142 has one end part in the longitudinal direction of the first arm member 141 that is one end part of the first arm member 141, and The length of the entire arm member between the other end in the longitudinal direction of the second arm member 142 that is the other end of the two arm member 142, that is, the first arm member 141 and the second arm member 142 are matched. The length is adjustable so that the length can be changed.

  Here, the other end portion in the longitudinal direction of the second arm member 142 is fixed to one end portion in the longitudinal direction of the first base member 131, that is, the first base member 131 by the fixed-side shaft member 18 whose axial direction is parallel to the width direction. In the longitudinal direction, it is connected to the end portion where the engaging claw 131d is provided. More specifically, the first base member 131 and the second arm member 142 are configured such that the fixed-side shaft member 18 has one end in the longitudinal direction of the pair of side plates 131 b and 131 c of the first base member 131 and the second arm member 142. The pair of side plates 142b and 142c are connected by being inserted through the other end in the longitudinal direction. The first base member 131 and the second arm member 142 are the second arm with respect to the first base member 131 unless the fixed-side shaft member 18 applies a rotational force beyond a certain level around the axis of the fixed-side shaft member 18. The member 142 is rotatably supported, for example, by being properly tightened so that the support state in which the rotation angle of the member 142 is constant is maintained. Here, when the second arm member 142 is rotated around the axis of the fixed-side shaft member 18 so as to face the first base member 131, the second arm member 142 moves the side plate 131 b and the side plate 131 c of the first base member 131. Therefore, the second arm member 142 and the first base member 131 can be overlapped with each other.

  That is, in the first embodiment, the first base member 131, the second base member 132, the first arm member 141, and the second arm member 142 can be overlapped as shown in FIG. More specifically, the first base member 131 and the second base member 132 make the back plate 131a and the back plate 132a face each other, and make the pair of side plates 131b and 131c face the pair of side plates 132b and 132c. The first base member 131 can be overlapped with the U-shaped groove portion of the second base member 132 when viewed from the longitudinal direction of the back plate 131a and the back plate 132a. Further, the first base member 131 and the second arm member 142 make the back plate 131a and the back plate 142a face each other, make the pair of side plates 131b and 131c and the pair of side plates 142b and 142c face each other, and make the back plate 131a. The second arm member 142 can be overlapped with the U-shaped groove portion of the first base member 131 when viewed from the longitudinal direction of the back plate 142a. Furthermore, the first arm member 141 and the second arm member 142 make the back plate 141a and the back plate 142a face each other, make the pair of side plates 141b and 141c and the pair of side plates 142b and 142c face each other, and make the back plate The first arm member 141 can be overlapped with the U-shaped groove portion of the second arm member 142 when viewed from the longitudinal direction of the 141a and the back plate 142a. Furthermore, the first arm member 141 and the camera unit 11 make the back plate 141a and the housing 111 of the camera unit 11 face each other, and the first arm member 141 is viewed from the longitudinal direction of the back plate 141a and the camera unit 11. It is possible to superimpose the housing 111 of the camera unit 11 on the U-shaped groove portion.

<Configuration of Information Processing Device 20>
The portable imaging device 10 as described above is attached to the information processing device 20 in use. As shown in FIG. 4, the information processing apparatus 20 includes a captured image data generation unit 21 as a captured image data generation unit, a projection conversion unit 22 as a projection conversion unit, and a display unit 23 as a display unit. ing.

  The captured image data generation unit 21 generates captured image data corresponding to an imaging target. The captured image data generation unit 21 inputs the captured image signal output from the output unit 12 of the portable imaging device 10 via the interface unit 24 of the information processing device 20, and the captured image data generation unit 21 Based on the captured image signal, the captured image data corresponding to the imaging target is generated.

  The projective conversion unit 22 generates captured image data so that a captured image corresponding to the captured image data generated by the captured image data generation unit 21 becomes a captured image when the captured image is captured from the front direction of the imaging range. Projective transformation is performed on the captured image corresponding to the captured image data generated by the unit 21. The projective transformation is, for example, to restore a captured image captured by the camera unit 11 to an original state using inverse projection transformation.

  Hereinafter, an example of projective transformation will be described. First, when the projective transformation unit 22 performs projective transformation on the captured image data generated by the captured image data generation unit 21, the projective conversion unit 22 is an image on the imaging surface T <b> 1 that is an image surface captured by the camera unit 11. Find the vanishing point. For example, when the imaging surface shape T2 that is the image shape on the imaging surface T1 is as shown in FIG. 5, vanishing points are obtained at two locations, the vanishing point S1 and the vanishing point S2. In addition, this vanishing point means a point where two straight line extensions formed in parallel in the actual shape intersect when a predetermined shape is projected. By calculating the vanishing point in this way, the projective transformation unit 22 obtains the original size before imaging based on the vanishing point and the projective transformation parameter that is a parameter for performing the projective transformation, and the following equation (1) Further, projective transformation is applied to the captured image data. That is, the projective transformation unit 22 obtains the coordinates (u, v, 1) after the projective transformation from the coordinates (x, y, 1) before the projective transformation based on the formula (1), thereby projecting the captured image data. Apply conversion.

  In this way, the projective transformation unit 22 performs projective transformation on the coordinates of the imaging surface shape T2, which are coordinates before projective transformation, to obtain coordinates after projective transformation, and uses the shape after projective transformation as shown in FIG. A certain post-projection transformation shape T3 can be obtained. The post-projection-transformed shape T3 is a shape similar to the real shape T4 that is a shape when the real image captured by the camera unit 11 is viewed from the front direction, that is, the shape when the captured surface is viewed in the vertical direction.

  In the first embodiment, since the camera unit 11 does not capture an image of a document such as a document from the front direction, the captured image of the document such as a document is distorted. The projective transformation unit 22 performs projective transformation on the distorted image to correct the distortion, and further performs cropping (trimming), cuts out from the document, and stores it in a storage unit (not shown). At that time, the projection conversion unit 22 may issue an instruction to a display control circuit 232 described later of the display unit 23 to display the converted image after the image processing on a monitor 231 (display) described later. As described above, the projection conversion by the projection conversion unit 22 may be image-processed together with cropping described later after the image acquisition performed by the captured image data generation unit 21, and the projection conversion unit 22 uses the camera unit 11 ( For example, an image transferred from a WEB camera may be sequentially subjected to projective transformation processing and displayed on the display unit 23 as a live view. In this case, since the user can see the image as if it was taken from the front direction, the original can be set more naturally. In addition to the above-described technique, various conventionally known projection conversion techniques can be used as the projective conversion.

  The display unit 23 displays a captured image. The display unit 23 includes a monitor 231 and a display control circuit 232 that controls image display on the monitor 231. The monitor 231 is, for example, a liquid crystal display device. The monitor 231 displays the captured image that has undergone the projective transformation by the projective transformation unit 22 based on an instruction from the display control circuit 232.

  Next, operations of the portable imaging device 10 and the information processing device 20 according to the first embodiment will be described.

  In the image processing system 1 according to the first embodiment, first, the portable imaging device 10 is attached to the monitor 231 of the information processing device 20. As shown in FIG. 3, when the first base member 131 and the second base member 132 of the portable imaging device 10 are overlapped, the second base member 132 is placed with respect to the first base member 131. The first base member 131 is rotated about the axis of the base shaft member 15 on the opposite side of the direction facing the base member 131, and the first base member 131 has one longitudinal end and the second base member 132 has the other longitudinal end. Expand the space between the parts. Next, one end of the first base member 131 in the longitudinal direction is disposed on the display surface side of the monitor 231, for example, on the display surface side of the upper portion of the monitor 231, and the other end in the longitudinal direction of the first base member 131 is disposed on the back side of the monitor 231. The engaging claw 131 d provided at one end portion in the longitudinal direction of the first base member 131 is hooked on the display surface side of the upper portion of the monitor 231 of the information processing apparatus 20. Next, the second base member 132 is rotated around the axis of the base shaft member 15 with respect to the first base member 131 so that the portable imaging device 10 does not wobble with respect to the upper portion of the monitor 231. 10 is stopped, the rotation of the second base member 132 with respect to the first base member 131 is stopped. As a result, the support state of the first base member 131 and the second base member 132 by the base shaft member 15, in other words, the rotation of the second base member 132 around the axis of the base shaft member 15 relative to the first base member 131. Keep the corners. Therefore, the fixing unit 13 of the portable imaging device 10 can be fixed to the upper part of the monitor 231 of the information processing device 20. Next, as illustrated in (a) and (b) of FIG. 7, for example, the imaging target S is placed on the keyboard unit 25 of the information processing apparatus 20. Next, the second arm member 142 of the portable imaging device 10 is rotated around the axis of the fixed-side shaft member 18 and the axis of the arm shaft member 17, and the first arm member 141 is rotated around the axis of the arm shaft member 17. The portable imaging device 10 is fixed to the monitor 231 by rotating around the axis of the imaging side shaft member 16 and further rotating the casing 111 of the camera unit 11 around the axis of the imaging side axis member 16. The distance from the arrangement position of the fixed-side shaft member 18 that is the location to the lens 113 of the camera unit 11 and the imaginary line that connects the fixed-side shaft member 18 and the lens 113 of the camera unit 11 are The angle formed with respect to the plate surface is appropriately set. At this time, the output unit 12 of the portable imaging device 10 and the interface unit 24 of the information processing device 20 are connected by a signal cable, which is the USB cable 30 in the first embodiment.

  Next, in the information processing apparatus 20, a program for imaging the imaging target S is operated, and the imaging target S is imaged by the camera unit 11. In the camera unit 11, light reflected by the imaging target S, that is, reflected light is detected by the sensor chip 112 through the lens 113, and a detection signal corresponding to the imaging target S is detected from the sensor chip 112. Is output. In the image processing chip 114, predetermined correction processing such as white balance and exposure is performed on the detection signal transmitted from the sensor chip 112, and a captured image signal corresponding to the imaging target S is output from the output unit 12. The This captured image signal is transmitted to the interface unit 24 of the information processing apparatus 20 via the USB cable 30. The captured image signal transmitted to the interface unit 24 is sent to the captured image data generation unit 21 in the information processing apparatus 20, and the captured image data generation unit 21 generates captured image data based on the captured image signal. Is done. Next, the captured image data generated by the captured image data generation unit 21 is transmitted to the projective conversion unit 22. In the projective conversion unit 22, the projective transformation described with reference to FIGS. 5 and 6 is performed on the captured image data transmitted from the captured image data generation unit 21, and captured image data when the imaging target S is viewed from the front is obtained. Generated. Next, the captured image data subjected to the projective conversion by the projective conversion unit 22 is transmitted to the display control circuit 232 of the display unit 23, and the captured image subjected to the projective conversion by the projective conversion unit 22 by the display control circuit 232. A captured image corresponding to the data, that is, a captured image corresponding to the imaging target S when the imaging target S is viewed from the front is displayed on the monitor 231.

  By the way, as shown in FIGS. 7A and 7B, when the portable imaging device 10 is attached to the information processing device 20, the imaging target S is placed depending on the size of the information processing device 20, for example. The height of the upper portion of the monitor 231 may be different from the keyboard unit 25. For this reason, the distance from the fixed location where the 1st base member 131 is fixed to the upper part of monitor 231 to imaging object S will differ. As a result, for example, if the portable imaging device 10 is directly attached to the information processing device 20 of another size without changing the shape when the portable imaging device 10 is used, from the camera unit 11 to the imaging target S. The distance of will change.

  However, in the portable imaging device 10, as described above, the telescopic unit 14 that connects the camera unit 11 and the first base member 131 of the fixed unit 13, that is, the first arm member 141 and the second arm member 142. Is rotated around the axis of the fixed side shaft member 18, the arm shaft member 17, and the imaging side shaft member 16 as described above, so that the fixed side shaft member which is a fixed portion with respect to the monitor 231 of the portable imaging device 10. Since the distance between the arrangement position 18 and the arrangement position of the imaging side shaft member 16, which is a connection position between the camera unit 11 and the first arm member 141, is extendable, the first base of the fixing unit 13 Regardless of the distance from the fixed location where the member 131 is fixed to the monitor 231 to the imaging target S, the distance from the camera unit 11 to the imaging target S can be adjusted to an arbitrary distance. For example, in the first embodiment, the distance from the camera unit 11 to the imaging target S is made constant by changing the rotation angle around the axis of the arm shaft member 17 of the first arm member 141 with respect to the second arm member 142. it can. For this reason, for example, even if the camera unit 11 is not provided with a function of zooming in and zooming out on the imaging target S, the imaging target S can be arranged in an appropriate size within the angle of view.

  In addition, as described above, since the distance between the arrangement position of the expansion / contraction section 14, in other words, the arrangement position of the fixed side shaft member 18 and the arrangement position of the imaging side shaft member 16, is adjustable, the user can perform portable imaging. When the apparatus 10 is not used, the first base member 131 and the second base member 132 are rotated around the axis of the base shaft member 15, and the fixing unit 13 of the portable imaging apparatus 10 is monitored 231. Then, the second base member 132 is rotated around the axis of the base shaft member 15 with respect to the first base member 131, and the first base member 131 is stored in the U-shaped groove portion of the second base member 132. Then, the first base member 131 is rotated around the axis of the fixed-side shaft member 18 with respect to the second arm member 142 to store the second arm member 142 in the U-shaped groove portion of the first base member 131, 1 arm member 141 The second arm member 142 is rotated about the axis of the arm shaft member 17 and the first arm member 141 is stored in the U-shaped groove portion of the second arm member 142, whereby the portable imaging device 10 is folded. The first arm member 141, the second arm member 142, the first base member 131, and the second base member 132 can be overlapped. At this time, the camera unit 11 may be stored in the U-shaped groove portion of the first arm member 141 by rotating the first arm member 141 around the axis of the imaging side shaft member 16 with respect to the camera unit 11. In this way, at least the expansion / contraction part 14 can be contracted more than when the portable imaging device 10 is used.

  Here, between the camera unit 11 and the first arm member 141, between the first arm member 141 and the second arm member 142, between the second arm member 142 and the first base member 131, and the first The base member 131 and the second base member 132 are axially connected in parallel with each other by the imaging side shaft member 16, the arm shaft member 17, the fixed side shaft member 18, and the base shaft member 15. For example, the portable imaging device 10 can be folded. For this reason, size reduction of an apparatus can be achieved. Therefore, the portability of the device can be improved.

  At this time, in the portable imaging device 10, as described above, the housing 111 of the camera unit 11, the first arm member 141 and the second arm member 142 of the extendable unit 14, and the first base member 131 of the fixed unit 13. And the second base member 132, for example, the first arm member 141 and the second arm member 142, the first base member 131 and the second base member 132, the second arm member 142 and the first arm member 142. Since the base member 131 can be overlaid, the apparatus can be further miniaturized. Here, in the first embodiment, the first arm member 141, the second arm member 142, the first base member 131, and the second base member 132 can all be overlapped, so that the apparatus can be further improved. Can be downsized. In this case, if the casing 111 of the camera unit 11 and the first arm member 141 are overlapped, the apparatus can be further reduced in size, which is preferable.

  If the camera unit 11 is stored in the U-shaped groove portion of the first arm member 141 by rotating the first arm member 141 around the imaging side shaft member 16 with respect to the camera unit 11, the portable imaging device 10 Since the printed circuit board 115 constituting the camera unit 11 can be overlapped with the first arm member 141, the apparatus can be made much more excellent by overlapping the printed circuit board 115 of the camera unit 11 and the first arm member 141. Can be downsized.

  As described above, in Embodiment 1, the captured image signal is transmitted by wired communication between the portable imaging device 10 and the information processing device 20, but the present invention is not limited to this. In the present invention, a captured image signal may be transmitted between the portable imaging device 10 and the information processing device 20 by wireless communication. For example, the information processing apparatus 20 includes a reception unit that inputs a captured image signal by wireless communication, for example, a reception antenna, and the output unit 12 transmits a captured image signal by wireless communication, for example, a transmission antenna. It may be said. In this case, it is not necessary to route signal lines between the portable imaging device 10 and the information processing device 20, and electrical connection between the portable imaging device 10 and the information processing device 20 can be easily performed. .

  In the first embodiment, the rotation angle around the axis of the base shaft member 15 of the second base member 132 relative to the first base member 131 is fixed by the base shaft member 15, but the present invention is not limited thereto. Not exclusively. In the present invention, for example, the first base member 131 is mounted by attaching an urging means such as a leaf spring near the attachment position of the base shaft member 15 so as to apply an urging force around the shaft of the base shaft member 15. The rotation angle around the axis of the base shaft member 15 of the second base member 132 may be fixed. In the first embodiment, the rotation angle around the axis of the imaging-side shaft member 16 of the housing 111 of the camera unit 11 with respect to the first arm member 141 is fixed by the imaging-side shaft member 16. Not limited to this. In the present invention, for example, the first arm member 141 is mounted by attaching an urging means such as a leaf spring near the attachment position of the imaging side shaft member 16 so as to apply an urging force around the axis of the imaging side shaft member 16. The rotation angle around the axis of the imaging side shaft member 16 of the housing 111 of the camera unit 11 may be fixed. In the first embodiment, the rotation angle around the axis of the arm shaft member 17 of the first arm member 141 with respect to the second arm member 142 is fixed by the arm shaft member 17. Not exclusively. In the present invention, for example, the second arm member 142 is mounted by attaching an urging means such as a leaf spring near the attachment position of the arm shaft member 17 so as to apply an urging force around the axis of the arm shaft member 17. The rotation angle around the axis of the arm shaft member 17 of the first arm member 141 may be fixed. In the first embodiment, the rotation angle around the axis of the fixed side shaft member 18 of the second arm member 142 with respect to the first base member 131 is fixed by the fixed side shaft member 18. Not exclusively. In the present invention, for example, the first base member 131 is mounted by attaching an urging means such as a leaf spring in the vicinity of the attachment position of the fixed-side shaft member 18 so as to apply an urging force around the axis of the fixed-side shaft member 18. The rotation angle around the axis of the fixed side shaft member 18 of the second arm member 142 may be fixed.

[Embodiment 2]
Hereinafter, the image processing system 1 according to the second embodiment will be described. FIG. 8 shows a schematic side view of the image processing system according to the second embodiment. The image processing system according to the second embodiment is a so-called OHP that images a transparent original S as an imaging target. Note that the same constituent elements as those of the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

  The information processing apparatus 20 according to the second embodiment has a function of lighting the entire area of the display screen of the monitor 231 of the display unit 23 in white. Specifically, for example, when the user operates the keyboard unit 25 and an instruction for lighting the monitor 231 in white is input from the keyboard unit 25 to the display control circuit 232 of the display unit 23, the display control is performed. The circuit 232 gives a white lighting instruction to the monitor 231. When a white lighting instruction is input from the display control circuit 232, the monitor 231 lights the entire area of the display screen of the monitor 231 in white.

  In the second embodiment, for example, the first base member 131 and the second base member 132 constituting the fixing unit 13 of the portable imaging device 10 are attached to the monitor 231 of the information processing device 20 as in the first embodiment. In this state, the camera unit 11 is disposed at a position facing the display screen of the monitor 231 of the information processing apparatus 20. That is, the arrangement position of the camera unit 11 is adjusted so that the display screen of the monitor 231 is positioned on the optical axes of the sensor chip 112 and the lens 113 of the camera unit 11.

  Here, in the second embodiment, when the transparent original S is imaged by the camera unit 11, the first base member 131 and the second base member 132 constituting the fixing unit 13 of the portable imaging device 10 are implemented. The transparent original S is leaned on the display screen of the monitor 231 of the information processing apparatus 20 while being attached to the monitor 231 of the information processing apparatus 20 as in the first mode. In other words, the transparent original S is disposed between the camera unit 11 and the display screen of the monitor 231 so that the white light of the monitor 231 that has passed through the transparent original S is captured by the camera unit 11.

  In addition, the projection conversion unit 22 of the information processing apparatus 20 according to the second embodiment converts the captured image corresponding to the captured image data generated by the captured image data generation unit 21 based on the captured image of the rectangular monitor 231. Perform projective transformation. In the second embodiment, specifically, the projective transformation unit 22 extracts the coordinates of the four corners of the four corners of the monitor 231 in the captured image of the display screen of the monitor 231 captured by the camera unit 11, and this extracted 4 The vanishing point S1 and the vanishing point S2 are obtained from the coordinates of the points. Then, the projective transformation unit 22 calculates the original size and shape of the monitor 231 before imaging, and the projective transformation parameter that is a parameter for performing projective transformation, based on the vanishing point S1 and the vanishing point S2. Projective transformation is performed on the captured image data from Equation (1) used in the first embodiment. That is, in the projection conversion unit 22 according to the second embodiment, when the captured image on the display screen of the monitor 231 by the camera unit 11 does not become rectangular, the captured image on the display screen of the monitor 231 becomes rectangular. As described above, projective transformation is performed on the captured image data.

  In the image processing system 1 according to the second embodiment, first, the portable imaging device 10 is attached to the monitor 231 of the information processing device 20. The procedure for fixing the portable imaging device 10 to the monitor 231 is the same as in the first embodiment. Next, while the portable imaging device 10 is attached to the monitor 231, the transparent original S is leaned on the display screen of the monitor 231, and the camera unit 11 is disposed at a position facing the display screen of the monitor 231. At this time, the output unit 12 of the portable imaging device 10 and the interface unit 24 of the information processing device 20 are connected by a signal cable, which is the USB cable 30 in the second embodiment. Next, for example, by operating the keyboard unit 25 of the information processing apparatus 20, a program for imaging the transparent original S is operated, and an instruction for lighting the monitor 231 in white is displayed from the keyboard unit 25. 232. When an instruction for lighting the monitor 231 in white is input from the keyboard unit 25, the display control circuit 232 issues a white lighting instruction to the monitor 231 so that the entire area of the display screen is lit in white. In this manner, the transparent original S is imaged by the camera unit 11 while the entire area of the display screen of the monitor 231 is lit white. In the camera unit 11, light from the display screen of the monitor 231 that has passed through the transparent original S, that is, transmitted light is detected by the sensor chip 112 via the lens 113, and a detection signal corresponding to the transparent original S is detected from the sensor chip 112. Is output to the image processing chip 114. In the image processing chip 114, predetermined correction processing such as white balance and exposure is performed on the detection signal transmitted from the sensor chip 112, and a captured image signal corresponding to the transparent original S is output from the output unit 12. The This captured image signal is transmitted to the interface unit 24 of the information processing apparatus 20 via the USB cable 30. The captured image signal transmitted to the interface unit 24 is sent to the captured image data generation unit 21 in the information processing apparatus 20, and the captured image data generation unit 21 generates captured image data based on the captured image signal. Is done. Next, the captured image data generated by the captured image data generation unit 21 is transmitted to the projective conversion unit 22. The projection conversion unit 22 extracts the coordinates of the four corners of the display screen of the monitor 231 from the captured image data of the monitor 231, and the captured image data generation unit so that the captured image of the display screen of the monitor 231 is rectangular. Projection transformation is performed on the captured image data transmitted from 21. Next, the captured image data that has undergone the projective conversion by the projective conversion unit 22 is transmitted to a storage device (not shown) in the information processing apparatus 20, and the captured image that has undergone the projective conversion by the projective conversion unit 22 by this storage device. A captured image corresponding to the data, that is, a captured image corresponding to the transparent original S when the transparent original S is viewed from the front is stored. In this manner, the information processing apparatus 20 acquires a captured image corresponding to the transparent original S when the transparent original S is viewed from the front.

  As described above, in the image processing system 1 according to the second embodiment, when the transparent original S is imaged by the camera unit 11, the projective transformation can be performed also on the captured image of the transparent original S. Therefore, a captured image of the transparent original S when the transparent original S is imaged from the front can be obtained.

  Further, in the image processing system 1 according to the second embodiment, the portable imaging device 10 can be used as an OHP camera that is an imaging device for the transparent document S, for example, different from a web camera or the like. For this reason, the application range of the image processing system 1 can be expanded.

[Embodiment 3]
Hereinafter, the image processing system 1 according to the third embodiment will be described. FIG. 9 shows a schematic side view of the image processing system according to the third embodiment. The image processing system according to the third embodiment is a so-called diorama imaging device that images a model Tr as an imaging target. Constituent elements similar to those in the first and second embodiments are denoted by the same reference numerals and description thereof is omitted.

  The information processing apparatus 20 according to the third embodiment has a function of projecting a background image corresponding to the model Tr on the display screen of the monitor 231 of the display unit 23. Specifically, for example, when the user operates the keyboard unit 25, an instruction to display a background image corresponding to the model Tr on the monitor 231 is input from the keyboard unit 25 to the display control circuit 232 of the display unit 23. In this case, the display control circuit 232 issues a background image display instruction to the monitor 231. When a background image display instruction is input from the display control circuit 232, the monitor 231 displays a background image that matches the model Tr on the display screen of the monitor 231. The background image matched with the model Tr is an image such as a photograph or an illustration. For example, the user stores image data corresponding to the background image in a storage device (not shown) in the information processing apparatus 20 in advance.

  The portable imaging device 10 according to the third embodiment is used without being attached to the monitor 231 of the information processing device 20. The portable imaging device 10 according to the third embodiment is configured such that, for example, the camera unit 11 is raised from the back plate 141a of the first arm member 141 from the folded state described in the first embodiment. The arrangement position of the camera unit 11 (for example, the height of the camera unit 11) is adjusted so that the display screen of the model Tr and the monitor 231 of the information processing apparatus 20 is positioned on the optical axes of the chip 112 and the lens 113. At this time, the first arm member 141, the second arm member 142, the first base member 131, and the second base member 132 are connected to the imaging side shaft member 16, the arm shaft member 17, the fixed side shaft member 18, and the base. For example, the distance between the base shaft member 15 and the lens 113 of the camera unit 11 may be appropriately changed by rotating around the shaft of the shaft member 15.

  Here, in the third embodiment, the model Tr as the imaging target is placed on the keyboard unit 25 of the information processing apparatus 20, for example. That is, when the model Tr is imaged by the camera unit 11, the monitor 231 is positioned on the back side opposite to the camera unit 11 with respect to the model Tr, and the camera unit 11 includes the substantial model Tr, This is a mechanism for capturing a background image matched with the model Tr, that is, a pseudo background image within one angle of view. At this time, in order to adjust the position of the model Tr with respect to the keyboard unit 25, for example, a model mounting table 26 may be appropriately installed between the keyboard unit 25 and the model.

  In addition, since the information processing apparatus 20 of Embodiment 3 is used as a so-called diorama imaging apparatus, it is not necessary to perform projective transformation on the captured image data generated by the captured image data generation unit 21.

  In the image processing system 1 according to the third embodiment, first, a model Tr as an imaging target is placed on, for example, the keyboard unit 25 of the information processing apparatus 20. Next, the portable imaging device 10 is not attached to the monitor 231 of the information processing device 20. Specifically, the portable imaging device 10 is disposed at a position facing the display screen of the monitor 231, and the second base member 132 is disposed. As a base, for example, from the folded state described in the first embodiment, the camera unit 11 is raised with respect to the back plate 141a of the first arm member 141, and on the optical axes of the sensor chip 112 and the lens 113 of the camera unit 11. The arrangement position of the camera unit 11 is adjusted so that the model Tr and the display screen of the monitor 231 of the information processing apparatus 20 are positioned at the same position. At this time, the output unit 12 of the portable imaging device 10 and the interface unit 24 of the information processing device 20 are connected by a signal cable, which is the USB cable 30 in the third embodiment. Next, for example, by operating the keyboard unit 25 of the information processing apparatus 20, a program for capturing the model Tr together with the background image of the model Tr is operated, and the background image of the model Tr is displayed on the monitor 231 from the keyboard unit 25. Is displayed to the display control circuit 232. Then, when an instruction for displaying the background image of the model Tr is input from the keyboard unit 25 to the monitor 231, the display control circuit 232 issues a background image display instruction to the monitor 231, and displays on the display screen of the monitor 231. A background image corresponding to the model Tr is displayed. In this manner, in the state where the background image corresponding to the model Tr is displayed on the display screen of the monitor 231, the camera unit 11 captures the model Tr and the background image corresponding to the model Tr. In the camera unit 11, reflected light from the model Tr and light from the display screen of the monitor 231 are detected by the sensor chip 112 through the lens 113, and are displayed on the model Tr and the monitor 231 from the sensor chip 112. A detection signal corresponding to the background image is output to the image processing chip 114. In the image processing chip 114, the detection signal transmitted from the sensor chip 112 is subjected to predetermined correction processing such as white balance and exposure, and corresponds to the model Tr and the background image displayed on the monitor 231. A captured image signal is output from the output unit 12. This captured image signal is transmitted to the interface unit 24 of the information processing apparatus 20 via the USB cable 30. The captured image signal transmitted to the interface unit 24 is sent to the captured image data generation unit 21 in the information processing apparatus 20, and the captured image data generation unit 21 generates captured image data based on the captured image signal. Is done. Next, the captured image data generated by the captured image data generation unit 21 is transmitted to a storage device (not shown) in the information processing device 20, and this storage device converts the model Tr and the background image displayed on the monitor 231. Corresponding captured images, that is, captured images in which a model Tr and a background image matched with the model Tr are contained within one angle of view are stored. In this way, the information processing apparatus 20 acquires a captured image in which the model Tr and the background image matched with the model Tr are contained within one angle of view.

  As described above, in the image processing system 1 according to the third embodiment, the portable imaging device 10 can be used as a camera for a diorama that is a model imaging device, for example, different from a web camera or the like. . For this reason, the application range of the image processing system 1 can be expanded.

[Embodiment 4]
Hereinafter, the image processing system 1 according to the fourth embodiment will be described. FIG. 10 shows a schematic side view of an image processing system according to the fourth embodiment. The image processing system according to the fourth embodiment uses the portable imaging device 10 as a desktop imaging device. The image processing system according to the fourth embodiment captures images of rectangular sheets such as originals, postcards, and business cards as imaging targets, and postcards in the fourth embodiment. Constituent elements similar to those in the first to third embodiments are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 11A, in the information processing apparatus 20 according to the fourth embodiment, the projection conversion unit 22 is generated by the captured image data generation unit 21 based on the captured image of the imaging target S having a rectangular shape. Projective transformation is performed on the captured image data. Specifically, in the fourth embodiment, the coordinates of four points at the four corners of the imaging target S imaged by the camera unit 11 are extracted, and the vanishing point S1 and the vanishing point S2 are obtained from the extracted four coordinates. . Then, the projective transformation unit 22 obtains a projective transformation parameter that is a parameter for performing the projective transformation, based on the vanishing point S1 and the vanishing point S2, the original size and shape of the imaging target S before imaging. Then, projective transformation is performed on the captured image data according to the equation (1) used in the first embodiment. That is, the projective conversion unit 22 according to the fourth embodiment performs projective conversion on the captured image data so that the captured image of the imaging target S by the camera unit 11 has a rectangular shape. Furthermore, the projective transformation unit 22 according to the fourth embodiment performs cropping (trimming) on the captured image that has undergone the projective transformation. Specifically, as illustrated in FIG. 11B, in the fourth embodiment, the imaging when the contour of the captured image after cropping is performed by the projection conversion unit 22 is viewed from the front of the imaging target S. The projective transformation unit 22 crops the captured image of the imaging target S so that the outline of the target S, that is, a rectangular shape is obtained. In other words, only the image of the imaging target S itself is cut out from the image captured by the camera unit 11 by the projection conversion unit 22.

  Furthermore, the information processing apparatus 20 according to the fourth embodiment includes a density correction unit (not shown), and the density correction unit uses the density conversion unit 22 to calculate the density of the captured image that has undergone projective transformation and cropping. Convert to almost the same density as S. In the fourth embodiment, since the imaging target medium S is a postcard, the density of the captured image subjected to the projective transformation and the cropping by the projection conversion unit 22 by the density correction unit (not shown) is almost the same as the background color of the postcard. Converted. The density correction unit (not shown) stores the captured image data subjected to density correction in a storage unit (not shown).

  The portable imaging device 10 according to the fourth embodiment is used without being attached to the monitor 231 of the information processing device 20. In the portable imaging device 10 according to the fourth embodiment, for example, the back plate 132a of the second base member 132 is placed on the placement surface of the portable imaging device 10, for example, a desk, from the folded state described in the first embodiment. In the mounted state, the first base member 131 is rotated around the axis of the base shaft member 15 and the axis of the fixed-side shaft member 18, and the second arm member 142 is rotated around the axis of the fixed-side shaft member 18 and It is rotated around the axis of the arm shaft member 17. In parallel with this, the first arm member 141 is rotated around the axis of the arm shaft member 17 and the axis of the imaging side axis member 16, and the housing 111 of the camera unit 11 is moved to the axis of the imaging side axis member 16. The position where the optical axes of the sensor chip 112 and the lens 113 of the camera unit 11 and the mounting surface of the portable imaging device 10 intersect is the imaging position of the imaging target S, which is the second base member in the fourth embodiment. The arrangement position of the camera unit 11 (for example, the height of the camera unit 11 with respect to the mounting surface of the portable imaging device 10 is set so that it is along the longitudinal direction of the second base member 132 along the longitudinal direction of the second base member 132. The inclination of the optical axes of the sensor chip 112 and the lens 113 of the camera unit 11 with respect to the mounting surface of the portable imaging device 10 is adjusted. At this time, the optical axes of the sensor chip 112 and the lens 113 of the camera unit 11 do not have to intersect the mounting surface of the portable imaging device 10 perpendicularly. At this time, the output unit 12 of the portable imaging apparatus 10 and the interface unit 24 of the information processing apparatus 20 are connected by a signal cable, which is the USB cable 30 in the fourth embodiment.

  Next, the imaging target S is placed at the imaging position, and in the fourth embodiment, a postcard is placed beside the other end of the second base member 132. At this time, if the arrangement position of the camera unit 11 is not appropriate, the arrangement position of the camera is adjusted again.

  Next, in the information processing apparatus 20, a program for imaging the imaging target S is operated, and the imaging unit S, which is the postcard in Embodiment 4, is captured by the camera unit 11. In the camera unit 11, reflected light that is light reflected by the imaging target S is detected by the sensor chip 112 via the lens 113, and a detection signal corresponding to the imaging target S is sent from the sensor chip 112 to the image processing chip 114. Is output. In the image chip 114, predetermined detection processing such as white balance and exposure is performed on the detection signal transmitted from the sensor chip 112, and a captured image signal corresponding to the imaging target S is output from the output unit 12. . The captured image signal is transmitted to the interface unit 24 of the information processing apparatus 20 via the USB cable 30, and the captured image signal transmitted to the interface unit 24 is transmitted to the captured image data generation unit 21. The captured image data generation unit 21 generates captured image data based on the captured image signal. The captured image data is transmitted to the projective conversion unit 22 and subjected to the projective conversion described in the first embodiment with reference to FIGS. 5 and 6, and the captured image data when the imaging target S is viewed from the front is obtained. Generated. At this time, the captured image of the imaging target S is also cropped by the projection conversion unit 22, and a captured image in which only the imaging target S is cut out (only the imaging target S is extracted) is generated. Further, the density of this captured image is corrected by a density correction unit (not shown) and converted to a density comparable to the background color of the postcard. Next, the captured image data of the imaging target S is transmitted to the table control circuit 232 of the display unit 23, and the captured image subjected to the above-described projective transformation, cropping, and density correction by the display control circuit 232, that is, the captured image A captured image corresponding to the imaging target S when the target S is viewed from the front is displayed on the monitor 231. At this time, the captured image data after the above-described projective transformation, cropping, and density correction are transmitted to a storage device (not shown) in the information processing apparatus 20, and only the above-described imaging target S is transmitted by this storage device. The extracted captured image is stored. In this way, the information processing apparatus 20 acquires a captured image in which only the above-described imaging target S is cut out.

  By the way, it is not easy to place the camera unit 11 of the portable imaging device 10 directly above the imaging target S placed at the imaging position and capture the imaging target S with the camera unit 11 from the front. However, in the image processing system 1 according to the fourth embodiment, even when the imaging unit S is captured from the camera unit 11 in a direction that intersects the normal line of the imaging target S instead of from the front, that is, from the oblique direction, the imaging target S is front-facing. It is possible to acquire a captured image when the image is captured from. Further, here, for example, in an imaging apparatus in which the camera unit is arranged immediately above the imaging target S when imaging a plurality of imaging targets S continuously, this camera unit prevents the imaging target S from being replaced. It may become. In this regard, in the portable imaging device 10, when the imaging target S is imaged, the camera unit 11 does not have to be disposed immediately above the imaging target S, so that the camera unit 11 hinders the replacement work of the imaging target S. It will not be. Therefore, the replacement work of the imaging target S can be performed smoothly.

  Although the first to fourth embodiments have been described above, the present invention is not limited to this. For example, as shown in FIG. 12, the present invention is a swinging shaft member having an axial direction that intersects the axial direction of the arm shaft member 17, here, a direction orthogonal to the axial direction of the arm shaft member 17. For example, 19 may be provided on the first arm member 141. When the swinging shaft member 19 is provided in the portable imaging device 10 as described above, the light of the sensor chip 112 and the lens 113 of the camera unit 11 is used when the angle of view of the camera unit 11 is adjusted to the imaging target. The position of the shaft can be finely adjusted, which is preferable.

  As described above, the portable imaging device according to the present invention is useful as an imaging device such as a web camera, and particularly useful as an imaging device such as a portable web camera.

  The image processing system 1 according to the present invention is useful as a scanner device, and particularly useful as a portable scanner device.

1 is a side view illustrating an outline of a portable imaging device according to Embodiment 1. FIG. It is a top view at the time of expansion | extension of a portable imaging device. It is a side view at the time of folding of a portable imaging device. 1 is a block diagram of an image processing system. It is a figure which shows an example of projective transformation. It is a figure which shows an example of projective transformation. It is a side view for demonstrating the attachment state of a portable imaging device. 5 is a side view of an image processing system according to Embodiment 2. FIG. 6 is a side view of an image processing system according to Embodiment 3. FIG. 10 is a side view of an image processing system according to Embodiment 4. FIG. It is a figure which shows the captured image before the image processing of the imaging target, and the captured image after the image processing of the imaging target. It is a side view which shows the modification of the portable imaging device of Embodiment 1-4.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image processing system 10 Portable imaging device 11 Camera part (imaging means)
12 Output section (output means)
13 Fixing part (fixing means)
14 Stretching part (stretching means)
DESCRIPTION OF SYMBOLS 15 Base shaft member 16 Imaging side shaft member 17 Arm shaft member 18 Fixed side shaft member 20 Information processing apparatus 21 Captured image data generation part (captured image data generation means)
22 Projection conversion unit (projection conversion means)
23 Display section (display means)
115 Printed circuit board (board part)
131 1st base member (one base member)
131d engaging claw 132 second base member (the other base member)
141 First arm member (one arm member)
142 Second arm member (the other arm member)
231 monitor (fixed target)
232 display control circuit S imaging target Tr model (imaging target)

Claims (11)

Based on the input captured image signal, captured image data generation means for generating captured image data corresponding to the imaging target, and a captured image corresponding to the generated captured image data is captured from the front direction of the imaging range. Projection conversion means for performing projective transformation on the captured image corresponding to the generated captured image data so as to be the captured image of the imaging target; and display means for displaying the captured image subjected to the projection conversion. A portable imaging device that can be attached to an information processing device comprising:
Imaging means for imaging the imaging object;
An output means for outputting the captured image signal corresponding to the imaged imaging target to the information processing apparatus;
A fixing means that is attachable to and detachable from a fixing object, and that fixes the imaging means to the fixing object;
One or two or more arm shaft members parallel to each other and at least two or more arm members respectively connected by the arm shaft members, and at both end portions of the whole connected arm members One end is connected to the imaging means by an imaging side shaft member parallel to the arm shaft member, and the other end is connected to the fixing means by a fixed side shaft member parallel to the arm shaft member. Expansion and contraction means that can be expanded and contracted so that the entire length of the arm member between the one end and the other end can be changed;
A portable imaging device comprising: The expansion / contraction means has two arm members,
Of the two arm members, one arm member has the one end and the other arm member has the other end,
The one arm member and the other arm member are rotatably supported by the arm shaft member and maintained in a supported state,
The one arm member and the imaging means are rotatably supported by the imaging side shaft member and maintained in a support state,
The other arm member and the fixing means are rotatably supported by the fixed-side shaft member and maintained in a support state.
The portable imaging device according to claim 1. The two arm members can be superimposed.
The portable imaging device according to claim 2, wherein The fixing means has two base members,
Of the two base members, one base member and the other base member are rotatably supported by a base shaft member whose axial direction is parallel to the arm shaft member, and a support state is maintained.
The one base member is connected to the other end by the fixed-side shaft member, and has an engaging claw that engages the fixed object on the side facing the other base member.
The portable imaging device according to any one of claims 1 to 3, wherein The two base members can be overlaid.
The portable imaging device according to claim 4. The other arm member and the fixing means can be superimposed.
The portable imaging device according to any one of claims 2 to 5, wherein The imaging means is configured by a flat substrate portion and an imaging element mounted on the substrate portion, and the substrate portion can be overlapped with the one arm member.
The portable imaging device according to any one of claims 2 to 6, wherein the portable imaging device is a portable imaging device. The information processing apparatus includes receiving means for inputting the captured image signal by wireless communication,
The output means is a transmission means for outputting the captured image signal by wireless communication.
The portable imaging device according to claim 1, wherein the portable imaging device is a portable imaging device. The portable imaging device according to any one of claims 1 to 8,
Based on the input captured image signal, captured image data generation means for generating captured image data corresponding to the imaging target, and a captured image corresponding to the generated captured image data is captured from the front direction of the imaging range. Projection conversion means for performing projective transformation on the captured image corresponding to the generated captured image data, and display means for displaying the captured image subjected to the projective transformation so as to be the captured image of the captured image. An information processing apparatus comprising:
An image processing system comprising: The fixed object is the display means.
The image processing system according to claim 9. The imaging object is a transparent original that is leaned on a display screen of the display means;
The imaging means is disposed at a position facing the display screen via a transparent document leaning on the display screen,
The display means lights the entire area of the display screen in white.
The image processing system according to claim 9 or 10, characterized in that

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