JP2011035878A - Image reading system, image display method and image display program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image reading system in which an object to be read is relatively easily placed in an optimal position in a read area, image display method and image display program. <P>SOLUTION: In the image reading system, a control program for controlling an image reading apparatus which reads an image of an object in no contact with an imaging section is executed to an information processing apparatus comprising a display device, and a read control screen of the image reading apparatus is displayed on the display device. When reading the image of the object by means of the image reading apparatus and determining a reading attitude of the object while reproducing and displaying the read image on the display device, a mark indicating a placing area inside a readable area of the object is displayed over the read image reproduced and displayed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to an image reading system, an image display method, and an image display program.

2. Description of the Related Art Conventionally, as an image reading system, there is known an image reading system in which a control device such as a computer and an image reading device are connected and image data obtained by reading an original by the image reading device is transferred to the control device.

Here, as an image reading apparatus, an apparatus that reads an image while conveying an original, an apparatus that sets an original on an original table, and an optical reading apparatus moves are common.

As a reading device used in such an image reading apparatus, for example, a one-dimensional sensor using a linear image sensor such as a CCD is often used, and a moving image is displayed using a two-dimensional sensor such as an area sensor. A document camera that can be used is also known (see, for example, Patent Document 1).

In the case of an image reading apparatus using such an area sensor, there is a problem that the image is distorted at the peripheral portion (particularly, four corners) of the reading region due to the lens characteristics.

The above-described problem does not occur only in the document camera, and may occur in an image reading apparatus that reads an image of an object without contact.

JP 2008-131325 A

SUMMARY OF THE INVENTION In view of the circumstances described above, an object of the present invention is to provide an image reading system, an image display method, and an image display program capable of relatively easily placing an object to be read at an optimal position in a reading area. To do.

An image reading system of the present invention that achieves the above object includes an image reading device that reads an image of an object in a non-contact manner with an imaging unit, and an image read by the image reading device that is detachably connected to the image reading device. A display device that displays the image, and the image reading device includes an image reading unit that performs reading while displaying the image of the object on the display device, and a region sandwiched between a pair of legs that open. And a support body that supports the image reading unit with the pair of legs at a position facing the readable region, and the display device includes: A mark indicating a placement area in the readable area is displayed on the read image.

The image display method of the present invention that achieves the above object causes the information processing apparatus provided with a display device to execute a control program for controlling an image reading device that reads an image of an object in a non-contact manner on an imaging unit. When the reading control screen of the image reading apparatus is displayed on the apparatus and the image of the object is read by the image reading apparatus and the reading image is reproduced and displayed on the display apparatus, the reading posture of the object is determined. A mark indicating a placement area in the readable area of the object is displayed on the read image.

Furthermore, the image display program of the present invention that achieves the above object causes the image capturing unit to execute a control program for controlling an image reading device that reads an image of a non-contact object, thereby displaying a reading control screen of the image reading device. The image reading device reads the image of the object and reproduces and displays the read image on the display device while determining the reading posture of the object. The information processing apparatus is caused to function so as to display a mark indicating the placement area in the possible area on the display device.

According to the present invention, there is an effect that the user can place an object at an optimum position in the reading area relatively easily.

FIG. 2 is an external perspective view of the image reading apparatus according to the first embodiment. FIG. 3 is a side view of the image reading apparatus according to the first embodiment. FIG. 2 is a top view of the image reading apparatus according to the first embodiment. FIG. 3 is a diagram illustrating an aspect when the image reading apparatus according to the first embodiment is used. FIG. 3 is an external perspective view in a state where the image reading apparatus according to the first embodiment is stored. FIG. 3 is a procedure explanatory diagram from the housed state to the used state of the image reading apparatus according to the first embodiment. FIG. 3 is a perspective view illustrating a configuration of a leg portion in an open leg state of the image reading apparatus according to the first embodiment. FIG. 3 is a perspective view illustrating a configuration of a leg portion in the storage state of the image reading apparatus according to the first embodiment. FIG. 6 is a diagram for explaining the operation of the legs of the image reading apparatus according to the first embodiment. FIG. 2 is a control block diagram of the image reading system according to the first embodiment. FIG. 3 is a diagram illustrating a reading control screen in the image reading system according to the first embodiment. FIG. 3 is a diagram illustrating a reading control screen in the image reading system according to the first embodiment. FIG. 3 is an image processing flowchart in the image reading system according to the first embodiment. FIG. 3 is a flowchart illustrating an image reading procedure according to the first embodiment.

Hereinafter, the present invention will be described in detail based on embodiments. The embodiment of the present invention described below is an example for explaining various concepts such as a superordinate concept, a middle concept, and a subordinate concept of the present invention. Therefore, the technical scope of the present invention is not limited to the following embodiments. (Embodiment 1)

First, the image reading apparatus according to the first embodiment will be described with reference to FIGS.

The image reading apparatus 1 according to the present embodiment includes an imaging unit 10 as an image reading unit, arm units 11 and 12 as support units that rotatably support the imaging unit 10, and a state where the arm units 11 and 12 stand up. And a pair of leg portions 13 and 14 as holding means for holding.

The imaging unit 10, the arm units 11 and 12, and the leg units 13 and 14 are all made of a material such as ABS resin to reduce the weight, and the imaging unit 10 has a box shape, the arm unit 11, No. 12 is provided with reinforcing ribs on both sides in the longitudinal direction to increase the strength.

The imaging unit 10 has an L-shaped outer shape, and includes a camera unit 10a in a bent portion. The camera unit 10a amplifies and outputs an area image sensor such as a CCD or C-MOS as a photoelectric conversion element that converts light incident through the lens 5 into an electric signal, and the electric signal converted by the area image sensor. Built-in amplifier and so on.

Note that the angle of view that can be captured by the imaging unit 10 is set in advance according to the size of the document (for example, A4). If the document size is equal to or smaller than the maximum size of the document that can be imaged by the imaging unit 10, the document image can be read.

Each of the arm parts 11 and 12 includes a first arm part (hereinafter referred to as an upper arm part) 11 located at the upper part and a second arm part (hereinafter referred to as a lower arm part) 12 located below the upper arm part 11. .

The arm portions 11 and 12 are connected to the hinge portion 7 so as to be rotatable in an angle range of approximately 0 ° (folded position) to 180 ° (open position). Further, the upper arm portion 11 and the lower arm portion 12 maintain a posture at an angle of about 180 ° in a used state (when reading a document) and are folded at an angle of about 0 ° in a stored state (when not in use or when being carried). Maintain the state. For example, a mechanism that does not move unless a predetermined force is applied by engaging a claw portion formed at each angular position of 0 ° and 180 ° with an engaging portion may be provided.

The imaging unit 10 is connected to the upper arm unit 11 by a hinge unit 6 so as to be rotatable in an angle range of about 180 ° to 120 °, and a predetermined angle (the imaging unit 10 is connected to the upper arm unit 11 in use). It can be locked so as to maintain its posture at an angle parallel to the document surface. Note that the imaging unit 10 is integrally configured in a manner that it cannot be removed from the upper arm 11.

Further, as shown in FIG. 5, the length of the imaging unit 10 and the upper arm unit 11 except for the camera unit 10 a bent in an L shape of the imaging unit 10 in a state where the imaging unit 10 and the upper arm unit 11 are rotated approximately 180 ° and straightened. The length of the lower arm 12 is set to be substantially the same as the length of the lower arm 12. Thereby, when the upper arm part 11 and the lower arm part 12 to which the imaging part 10 is connected are folded, the leg parts 13 and 14 accommodated in the accommodating part 12a to be described later are sandwiched so that they cannot be seen from the outside, and in the retracted state. It becomes a rectangular parallelepiped and has excellent portability.

The pair of leg portions 13 and 14 are rotatably supported by the lower end portion of the lower arm portion 12 in conjunction with the mutually engaged bevel gears 13a and 14a that are pivotally supported by the lower end portion of the lower arm portion 12.

As a result, the leg portions 13 and 14 are retracted in parallel in a concave storage portion 12a formed on the inner surface side of the lower arm portion 12 and the lower end portion of the lower arm portion 12 is drawn out from the storage position. It is movable between a use position where the leg is opened at an angle of approximately 90 ° as the center of movement.

As shown in FIG. 3, a convex portion 15 that protrudes inward in an opened state is formed at the end portion of the one leg portion 13 opposite to the lower arm portion 12. Further, convex portions 16a and 16b projecting inward in a state where the legs are opened are formed at the position of about 1/3 from the lower arm portion 12 side of the other leg portion 14 and at the end portion on the opposite side to the lower arm portion 12. Is formed.

The projections 15, 16 a, and 16 b place the document G in an arrangement region defined by an angle formed by the leg portions 13 and 14 that are opened at approximately 90 °, and simultaneously abut against the mutually orthogonal sides of the document G. Thus, the document G is positioned at an appropriate position with respect to the image reading area of the imaging unit 10. This facilitates the adjustment of the positions of the imaging unit 10 and the document G.

Here, as shown in FIG. 2, the appropriate position is, for example, for an A4 size document, the optical axis 9 of the lens 5 of the imaging unit 10 is the center position of the document G and is perpendicular to the document G. It is the position. Therefore, the area image sensor in the imaging unit 10 and the image forming surface of the original G are in a parallel positional relationship, and the image information of the original G is imaged through the lens 5 without being inclined to the area image sensor.

As shown in FIGS. 1, 3, and 7, the leg portions 13 and 14 are opened at approximately 90 ° with respect to the lower arm portion 12 by a pair of link portions 17 and 18, respectively, with respect to the image reading area of the imaging unit 10. Define the document placement area. One end portions 17a and 18a of the link portions 17 and 18 are pivotally supported at a position about 1/3 from the end on the lower arm portion 12 side in the longitudinal direction of each leg portion 13 and 14, and the other end portion ( 17b and 18b are also formed in a spherical shape. Both spherical portions 17b and 18b are connected to each other by a joint 20 and slide into a long hole 19a formed in a rib portion 19 standing in the longitudinal direction at the central portion in the width direction of the storage portion 12a of the lower arm portion 12. Engaged as possible.

As shown in FIG. 9, the lower hole portion of the long hole 19a protrudes in the direction of reducing the hole diameter, and the spherical portions 17b and 18b of the link portions 17 and 18 extend from the lower edge portion of the long hole 19a to the upper edge portion. A locking portion 21 is formed in a shape that cannot be easily overcome when moving. On the other hand, when the spherical portions 17b and 18b move from the upper edge portion to the lower edge portion, they have a smooth shape that can be overcome relatively easily.

As shown in FIG. 9 (b), when the pair of leg portions 13 and 14 are opened to about 90 °, the spherical portions 17b and 18b of the link portions 17 and 18 are locked to the locking portion 21, and the link The parts 17 and 18 are held upright with respect to the leg parts 13 and 14.

On the contrary, when the user lifts the spherical portions 17b and 18b of the link portions 17 and 18 by hand to get over the locking portion 21 to release the locked state, the spherical portions 17b and 18b of the link portions 17 and 18 are released. Can slide along the long hole 19a.

Here, by sliding the spherical portions 17b and 18b to the upper edge portion, the link portions 17 and 18 become parallel to the leg portions 13 and 14 as shown in FIG. 8 and FIG. It is stored in the storage part 12 a of the part 12.

As shown in FIG. 8, the length of the leg portion 13 is shorter than the leg portion 14 by the length of the convex portion 16b, and interferes with the convex portion 15 of the leg portion 13 in the illustrated storage state. It is configured not to. In addition, the length of the link parts 17 and 18 is such that the lower arm part 12 has the leg parts 13 and 18 in use.
14 is set in advance so as to stand at an appropriate angle.

When assembling the apparatus from the housed state shown in FIGS. 5 and 6A to use it for reading a document, first, the lower arm portion 12 is rotated about 180 ° with respect to the upper arm portion 11 by the hinge portion 7. It is moved and expanded (FIG. 6B). Here, the upper arm portion 11 and the lower arm portion 12 are fixed by the hinge portion 7 so as to maintain an angle of about 180 °.

Next, the imaging unit 10 rotates around the hinge unit 6 by its own weight, and stops at a position that forms a predetermined angle with respect to the upper arm unit 11 (FIG. 6C). Here, the predetermined angle is an angle at which the optical axis 9 of the lens 5 of the imaging unit 10 is perpendicular to the document G and the imaging unit 10 is parallel to the document surface, as shown in FIG. The predetermined angle may be set, for example, by providing an abutting portion between the imaging unit 10 and the upper arm unit 11, and setting the angle when the abutting portion hits.

Finally, the leg portions 13 and 14 are pulled out from the storage portion 12a of the lower arm portion 12 to be opened, so that the link portions 17 and 18 are rotated opposite to the leg portions 13 and 14. At the same time, the spherical portions 17b, 18b of the link portions 17, 18 slide from the upper edge portion toward the lower edge portion along the long hole 19a, and the spherical portions 17b, 18b are long when opened at approximately 90 °. Over the locking portion 21 of the hole 19a, the locked state is reached (FIGS. 6D and 7).

On the other hand, when the apparatus is put into the storage state, it can be realized by performing the above-described procedure (FIG. 6A → D) in reverse. As described above, it can be developed from the stored state to the used state by two operations, and at the same time, the image pickup unit 10 can be always arranged parallel and at the same height with respect to the document G, so that stable document reading can be easily performed. Become.

As shown in FIG. 4, the image reading apparatus 1 of the present embodiment is a connector for electrically connecting a personal computer (PC) 3 as an external device (information processing apparatus) via an interface cable 2 such as a USB. Is provided.

In addition, the image reading apparatus 1 includes an indicator 4 that is turned on during connection with the PC 3 to notify the user. Further, the image reading apparatus 1 executes or stops reading of an image according to an operation command from a user who operates according to an application program executed on the PC 3. The PC 3 performs various processes on the image information transferred from the image reading apparatus 1. As described above, the image reading apparatus 1 of the present embodiment is reduced in weight by not mounting electronic components such as an image processing circuit.

According to the above configuration, the document table that has caused the apparatus to be bulky can be eliminated, and the imaging unit 10, the arm unit 11, and the like can be obtained by a simple configuration with a pair of legs 13 and 14 that open at approximately 90 °. 12 can stand up in a stable posture. At the same time, a document G positioning function is added to the legs 13 and 14 so that the document G can be easily positioned. Therefore, the user can carry it in a bag or the like, and can easily assemble and start reading a document at the time of use.

In addition, you may comprise so that the largest leg angle of the leg parts 13 and 14 can be set to the value exceeding 90 degrees, or it can hold | maintain at arbitrary angles. In this case, the document may be positioned by providing projections, scales, and the like for indicating the optimum document position on the legs 13 and 14 opened at a preset angle. In addition, you may comprise so that it can expand and contract and fold so that the length of the leg parts 13 and 14 can be adjusted.

Further, since the imaging unit 10 is connected to the upper arm unit 11 so as to be parallel to the area formed by the legs 13 and 14 that have been opened, the legs 13 and 14 are opened and placed on the table. Only the image pickup unit 10 and the original G can be positioned. And it is prescribed | regulated as a readable area | region by the area | region pinched by a pair of leg parts 13 and 14 to open.

Here, “define as a readable area by an area sandwiched between a pair of leg portions 13 and 14” means, for example, two sides of a substantially rectangular readable area having a dimension of a pair of leg portions 13 and 14. However, a part of two adjacent sides of the substantially rectangular readable area may be defined by a pair of legs 13 and 14.

In the present embodiment, the area that is sandwiched and partitioned by the pair of leg portions 13 and 14 is set in advance to an A4 size that is slightly longer than the length of the leg portions 13 and 14. Of course, this invention is not limited to this, You may change suitably the dimension, shape, etc. of a pair of leg part according to predetermined fixed size.

In the image reading apparatus 1 according to the present embodiment, the positioning of the imaging unit 10 and the readable area (document G) is automatically performed by opening the pair of leg portions 13 and 14 to the assembled state. It is possible to make it readable.

Accordingly, it is possible to easily and quickly position the document without the need for fine adjustment or the like when positioning the imaging unit 10 and the document G. However, the position of the imaging unit 10 when the legs 13 and 14 are opened is not limited to one. For example, the angle between the imaging unit 10 and the upper arm unit 11 or the upper arm unit 11 using an adjusting means such as a screw. By making the angle of the lower arm part 12 variable, it can be set at various positions. As a result, when only reading a document of a specific size is performed, the operation becomes very simple, while other sizes of documents can be handled as necessary, and convenience is further improved.

As shown in FIG. 4, the image reading apparatus 1 described above is connected to a PC 3 including a display device, which is an example of an information processing apparatus, by an interface cable 2 and constitutes a part of the image reading system.

The operation of such an image reading system will be described below with reference to FIGS. As shown in FIG. 10, a CPU (Central Processing Unit) 101 of the image reading apparatus 1 reads a program stored in a ROM (Read Only Memory) 102 and uses a RAM (Random Access Memory) 103 as a work area. While controlling the image reading apparatus.

Specifically, the image reading apparatus 1 receives a user instruction based on a control program (for example, driver software or the like) operating on the PC 3 and receives from a CCD (Charge Coupled Device) 104 which is an example of an area image sensor. The analog data is digitized by an AFE (Analog Front End) 105, the image processing is performed by the CPU 101, and the image data is transferred to the PC 3.

On the other hand, the PC 3 includes a CPU 301 which is a control unit, a ROM 302 and a RAM 303 which are storage units connected to the CPU 301, and a display device 304 whose information display is controlled by the CPU 301.

A control program for controlling the above-described image reading apparatus 1 is stored in the storage unit (specifically, the ROM 302 or the like) of the PC 3. Here, the control program is a program that is executed by the PC 3 and controls the image reading apparatus 1. For example, in the present embodiment, the control program is preinstalled in the PC 3. Such a control program is executed by the PC 3 to cause the PC 3 to function so that the display control screen of the image reading apparatus 1 is displayed on the display device 304 of the PC 3.

  Specifically, for example, in this embodiment, when a high-resolution reading instruction is received from the PC 3 by a communication unit (not shown), the reading density is switched from a low resolution to a high resolution by controlling the image reading unit including the imaging unit. Is called.

  The reading instruction from the PC 3 here is generated by a user operation on the reading control screen displayed on the PC 3 described above. For example, when a change from low resolution to high resolution is performed on the control screen on the PC 3, a read density change signal is transmitted from the PC 3 to the image reading apparatus 1.

  Actually, an instruction to switch from low resolution to high resolution is automatically generated by starting a main scan (depressing a read execution button) described later. The image reading apparatus 1 receives the reading density change signal and controls the image reading means to switch the reading density.

Note that when the image reading unit is actually connected to the PC 3, the image reading unit is activated in synchronization therewith, and low-resolution reading (pre-scan) is automatically started by the imaging unit 10, and high-resolution reading (main scan) is started. Control is performed so that low-resolution reading is continued until a switching instruction is received.

Here, on the reading control screen displayed on the PC 3, as shown in FIG. 11, an image display unit 201 that displays a read image (captured image) in the image reading apparatus 1 and a display in the image display unit 201. A control unit 203 that controls the contents is displayed.

For example, in this embodiment, a guide frame 202 is displayed on the image display unit 201 as a mark indicating the placement area of the readable area of the image reading apparatus 1 together with the read image.

That is, the control program that operates on the PC 2 displays the read image on the display device, and controls the PC 2 to display the read image with a guide frame added thereto.

The guide frame (mark) 202 is preferably displayed in a conspicuous color such as red. Further, the placement area of the readable area is preferably an appropriate or optimal reading position (position where good image reading is possible) in the readable area. The center position of the region was used.

As described above, in this embodiment, the guide frame 202 is displayed at the center position of the readable area. For example, the guide frame 202 serves as a guideline for placing a document, and there is no distortion in the guide frame 202 and its vicinity. The image can be read satisfactorily in the state. That is, it is possible to minimize the influence of distortion generated at the peripheral edge (for example, four corners) of the readable area of the CCD 104.

In particular, this embodiment is effective when reading a document extremely smaller than the readable area. For example, in the case of an A4 size readable area, it is possible to read a relatively small document (such as a business card) under the setting conditions.

In such a case, since the guide frame is displayed at the center position of the readable area, the user places an original (such as a business card) in the guide frame and the vicinity thereof while minimizing the influence of distortion. The original image can be read in a good state.

In the present embodiment, the read image that displays the guide frame 202 indicating the placement area in the above-described readable area is a pre-scan image. The prescan image is, for example, a read image having a lower resolution than the main scan image. The user can grasp the optimum reading position by displaying the above-described guide frame 202 when determining the reading posture of the document based on such a pre-scan image.

In the present embodiment, on the reading control screen displayed by executing the control program, as shown in FIG. 11, a size changing unit (a control unit 203 that can change the reading size of the document read by the image reading device 1). (Size changing means) may be provided, and the size of the guide frame 202 may be automatically varied in conjunction with the reading size change.

Here, the size changing unit may be switchable for each standard size such as A4 or may be changed to an atypical size by a user's screen operation. FIG. 3 is an example of displaying a frame line. An image display unit 201 is displayed on the display screen of the PC 3, and a guide frame 202 is displayed therein. In addition, a size changing unit is also displayed as an operation unit.

For example, in FIG. 11, when the reading size is large, the size of the guide frame 202 is also displayed small. On the other hand, FIG. 12 shows that the size of the guide frame 202 is displayed relatively large when the reading size is small. As described above, when the user changes the reading size, the display size of the guide frame 202 can be automatically changed in conjunction with the change.

With such a configuration, an image at the normal position can be read by performing oblique correction of the read image without a physical document guide or the like.

In addition, the display of the guide frame 202 described above can be applied to reproduction display before the main scan in the present embodiment, for example. That is, the image reading apparatus 1 can perform reading while reproducing and displaying (real-time display) an image of a document imaged by the imaging unit 10 on the PC 3.

  For example, image data is transferred between the CPU 101 of the image reading apparatus 1 and the PC 3, and the subsequent processing is image filter processing as shown in FIG. Specifically, AE (automatic exposure adjustment) processing 110 adjusts the brightness of the image, AWB (auto white balance (automatic white correction)) processing 111 adjusts the hue of the image, and edge enhancement 112 makes the image clear. The averaging process 113 gives an image blurring effect.

  For example, the entire process can be omitted or thinned out. However, when the process is performed, if the image size is large, the amount of image data increases and a large amount of image filtering is performed. As a result, it takes time until an image is displayed on the display device via the display control device 114 as a result.

  Therefore, it is preferable to reduce the gradation of the image data in order to suppress the data amount of the image data. For example, for an image of a document to be reproduced and displayed, for example, an image is captured at a low resolution, and when the gradation of each color is, for example, normally 8 bits for each color, the data amount is 2 by reducing the gradation to 5 bits for each color. / 3.

  In this way, the time required for reproduction display can be shortened by reducing the gradation (first reading mode). As for reading after reproduction display, good original reading can be performed by reading at high resolution (second reading mode). In other words, the reading time can be shortened by making the gradation of the image data during the pre-scan lower than the gradation of the image data during the main scanning.

  Specifically, 8 bits for each of R, G, and B colors are assigned during the main scan. One pixel data is 8 × 3 = 24 bits, and 3 bytes are required. On the other hand, at the time of pre-scanning, if the gradation of each color is dropped, for example, if R is 5 bits, G is 6 bits, and B is 5 bits, 5 + 6 + 5 = 16 bits as a whole, and 2 bytes are sufficient. At the same time, if the image size is reduced, the amount of image data can be further reduced, and as a result, the reading time can be shortened.

Here, with reference to FIG. 10 and FIG. 14, the reading procedure for the image from the pre-scan to the main scan described above will be described. FIG. 14 is a flowchart showing an image reading procedure.

As shown in FIG. 14, first, prescan image data is received from the CCD 104 (step S101) and stored in a memory (step S102). Specifically, the CPU 101 digitizes the low-resolution pre-scan image read by the CCD 104 using the AFE 105 and stores it in the RAM 103.

Next, the prescan image in the RAM 103 is sent to the PC 3, and the prescan image is displayed on the reading control screen by a control program (specifically, a control application) executed on the PC 3 (step S103).

Next, when the size of the guide frame 202 is changed by the reading control screen operation by the user in step S104, the guide frame 202 having a corresponding size is displayed together with the pre-scan image (step S105). Here, the guide frame 202 is described as being large or small, but actually, it may be a plurality of sizes according to a prescribed size (a standard size or a business card size, a passport size, a license size, etc.). You may be able to switch.

Next, when the size of the guide frame 202 cannot be switched in step S104, or after step S105, the main scanning execution instruction by the operation on the reading control screen on the PC side is waited (step S106).

Here, when an instruction to start the main scan is received by an operation on the reading control screen on the PC 3 side in step S106, the guide frame 202 displayed on the pre-scan image on the reading control screen is erased (step S107). As a result, the guide frame 202 is not displayed on the actual scan image and does not interfere with the confirmation.

Subsequently, the reading of the CCD 104 is controlled to execute the main scan (step S108). In addition, you may transfer to step S108 as it is, without performing said step S107. Further, when a predetermined time has passed without receiving an instruction to start the main scan in step S106, the process may return to step S101.

Note that the above-described procedure is merely an example, and for the procedure for displaying the guide frame 202 on the pre-scanned image, when the pre-scanned image is regularly read continuously, steps S101 to S103 are repeated. That is, the guide frame 202 is displayed in a changeable manner together with the latest pre-scan image until the main scan instruction is issued. (Other embodiments)

As mentioned above, although this invention was demonstrated based on Embodiment 1, it is not limited to Embodiment 1 mentioned above. For example, in the first embodiment described above, the foldable image reading apparatus has been described as an example. However, the present invention is of course not limited to such a structure, and may be applied to other image reading apparatuses such as a document camera. can do.

In the above-described first embodiment, the case where the guide frame is displayed as a mark indicating the center position of the readable area of the document has been described. However, the present invention is not limited to this, and for example, a line (frame Line), a multi-point display indicating a part of the outline of the region, or a point display directly indicating the center position.

In the first embodiment described above, the case where the main scan is executed with the guide frame displayed as a mark indicating the center position of the readable area of the document has been described. For example, after the main scan, the main scan is performed according to the size of the image display frame. Then, it may be controlled so that the size of the scanned image that is actually scanned is appropriately adjusted and the entire scanned image is displayed in the screen display frame.

  In addition, the present invention is not limited to the image reading apparatus or the image reading system as in the first embodiment described above. For example, the object information may be reproduced while displaying the read image on an information processing apparatus including a display device. When determining the reading posture, the present invention can be widely applied to an image display method for displaying a mark indicating a placement position (preferably a center position) of an object in a readable region on a read image to be reproduced and displayed.

  Furthermore, the present invention executes a control program for controlling an image reading apparatus that reads an image of an object that is not in contact with the imaging unit, displays a reading control screen of the image reading apparatus on the display device, and uses the image reading apparatus to When the reading posture of the object is determined while the read image is read and displayed on the display device, the reading position to be reproduced and displayed indicates the placement position (preferably the center position) of the object in the readable area. The present invention can also be applied to an image display program that causes an information processing device to function so as to display a mark on a display device.

DESCRIPTION OF SYMBOLS 1 Image reader 2 PC (personal computer) 10 Imaging part 201 Image display part 202 Guide frame 203 Size change part

Claims (12)

An image reading device that reads an image of an object in a non-contact manner by an imaging unit; and a display device that is detachably connected to the image reading device and displays a read image on the image reading device. The reading device defines an image reading unit that executes reading while displaying an image of the object on the display device, and a readable region including a region sandwiched between a pair of legs that are opened, and the image reading unit And a support that supports the open legs with the pair of legs at a position facing the readable region,
The image reading system, wherein the display device displays a mark indicating a placement area in the readable area on a read image of the image reading unit.   The image reading system according to claim 1, wherein the placement area in the readable area is a center position of the readable area.   An information processing device including the display device, wherein the information processing device displays a reading control screen of the image reading device on the display device by executing a control program for controlling the image reading device, and the control The program causes the information processing apparatus to function as a size changing unit that can change the reading size of the object based on the reading control screen, and the mark is linked to the change of the reading size of the object by the size changing unit. The image reading system according to claim 1, wherein the information processing apparatus is caused to function so as to change a size of a guide frame displayed as. 4. The image reading apparatus according to claim 1, wherein the image reading device is configured to read an image of the object from a low-resolution first reading mode to a high-resolution second reading mode. 2. The image reading system according to item 1. The image reading system according to claim 4, wherein the control program causes the display device to function so as to reproduce and display the read image read in the first reading mode on the display device. A reading execution button for controlling a reading start operation in the image reading device is displayed on the reading control screen, and when the reading execution button is pressed, the reproduction display of the read image on the display device is ended and the reading posture of the object The image reading system according to any one of claims 1 to 5, wherein the image reading is performed after the determination. A control program for controlling an image reading device that reads an image of an object that is not in contact with the imaging unit is executed on an information processing device including a display device, and the reading control screen of the image reading device is displayed on the display device. When determining the reading posture of the object while reading the image of the object by the image reading device and reproducing and displaying the read image on the display device, the reading image to be reproduced is displayed in the readable area of the object. An image display method characterized by displaying a mark indicating a placement area.   The image display method according to claim 7, wherein a mark indicating a center position of the readable area is displayed as a placement area in the readable area. 8. The reading size of the object can be changed based on the reading control screen, and the size of the guide frame displayed as the mark is variable in conjunction with the reading size change of the object. Or the image display method of 8. The image according to any one of claims 7 to 9, wherein the display of the read image to be reproduced and displayed is displayed at a lower resolution than the display of the read image after the reading posture of the object is determined. Display method. When the reading execution button for controlling the reading start operation in the image reading device displayed on the reading control screen is pressed, the reproduction display of the read image on the display device is terminated and the reading posture of the object is determined and read. The image display method according to claim 7, wherein the image display method is executed. A control program for controlling an image reading device that reads an image of an object that is not in contact with the imaging unit is executed to display a reading control screen of the image reading device on the display device, and the image reading device reads an image of the object. When the reading posture of the object is determined while displaying the read image on the display device, a mark indicating the center position of the readable area of the object is displayed on the display device on the read image to be reproduced and displayed. An image display program for causing the information processing apparatus to function.