JP2005072785A - Photographing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photographing system capable of relieving a load to prevent unwanted overlap of an ambient light to an object. <P>SOLUTION: A photographing system 1A is provided with: a camera section 10 for photographing an object OB; a support base 20 for supporting the camera section 10; and a shade part 30 located on the camera section 10. The photographing system 1A obtains a high luminance part OBh on the basis of photographing information obtained by photographing the object OB with the camera section 10 and particularizes the optical path of an incident light (ambient light) LJ causing unwanted light overlap to the object OB on the basis of positional information and distance information from the object OB to the camera section 10. Then the shade part 30 turns a shade plate 32 to obstruct the particularized optical path of the incident light LJ. Thus, the load on the user to prevent the unwanted overlap of ambient light can be eliminated. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a photographing system for photographing a subject placed in a predetermined placement area.

  2. Description of the Related Art A document camera system (photographing system) that photographs a placed paper document or the like with a camera unit fixed to a support base is known. For electronic image data obtained by photographing with this photographing system, for example, the image data is processed and then stored in a storage device and electronic filing of a document is performed, or the image data is printed on another paper by a printer. It is used for various purposes, such as printing to obtain a copy, and projecting the image data onto a screen by a projector for presentation.

  In such a photographing system, in order to prevent the illumination light from being reflected on the original when the original is illuminated with a dedicated lighting device, for example, in Patent Document 1 and Patent Document 2, light shielding such as a light shielding plate or a louver is performed. The use of a member is disclosed.

  On the other hand, for example, Japanese Patent Application Laid-Open No. 2004-260688 describes a technique for preventing the occurrence of reflection by moving the position of the camera unit when reflection occurs in the photographing system.

JP-A-8-18736 Japanese Patent Laid-Open No. 11-174599 Japanese Patent Laid-Open No. 11-187214

  The anti-reflection technique described in the above Patent Documents 1 and 2 is premised on photographing work in a dark place with dedicated illumination light. Therefore, in a case where indoor lighting (external light) is turned on, This reflection of external light is not always prevented. Therefore, in order to avoid the reflection of outside light, the burden on the user such as turning off the indoor lighting when the indoor lighting is turned on or closing the curtain when outdoor light is incident is imposed on the user. The efficiency of.

  On the other hand, in recent years, the lighting of the room where the presentation is performed has been improved, such as the transition of the presentation method from the use of OHP to a PC application typified by PowerPoint, and the performance of a projector that magnifies and projects the captured image. There is no need to darken it. For this reason, presentations are often performed with the interior lighting turned on, but in this case, the illumination light from the interior lighting is easily reflected in the subject. According to the technique described in Patent Document 3 described above, shooting is performed by adjusting the position of the camera unit or the like. It will be necessary and will interfere with the progress of the presentation.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an imaging system capable of reducing a burden for preventing external light from being reflected on a subject.

  In order to solve the above problems, the invention of claim 1 is a photographing system for photographing a subject placed in a predetermined placement area, and (a) image data based on a subject image obtained through a photographing lens is obtained. An imaging unit to generate; (b) a support unit that supports the imaging unit above the predetermined placement area; and (c) an acquisition unit that acquires information on a high-luminance part of the subject based on the image data. And (d) specifying means for specifying an optical path of external light that causes reflection on the subject based on information on a distance from the imaging unit to the subject and information on the high-luminance part.

  The invention of claim 2 is the imaging system according to claim 1 of the invention, wherein (e) a rectilinear prevention member that prevents straight light from traveling, and (f) the rectilinear advance prevention member is moved along a predetermined movement path. Drive means; and (g) control means for moving the straight travel prevention member on the optical path of the external light by the drive means.

  Further, the invention of claim 3 is the imaging system according to the invention of claim 1, in which (h) a rectilinear advance preventing member that prevents light from going straight, and (i) the rectilinear advance preventing member is movable along a predetermined movement path. And (j) display means for performing display indicating the optical path of the external light.

  According to a fourth aspect of the present invention, in the imaging system according to any one of the first to third aspects, the support means is (b-1) a base disposed in the vicinity of the predetermined placement area. And (b-2) a strut that is coupled to the base and supports the photographing unit, and the straight travel prevention member and the photographing unit are integrally formed.

  According to a fifth aspect of the present invention, in the imaging system according to any one of the first to fourth aspects of the present invention, the straight travel prevention member has a diffusibility with respect to transmitted light.

  According to the first to fifth aspects of the present invention, the optical path of the external light causing the reflection on the subject is specified based on the information on the distance from the photographing unit to the subject and the information on the high-luminance part of the subject. As a result, since the optical path of outside light is easily determined, it is easy to take measures to prevent reflection, and the burden on the user can be reduced.

  In particular, according to the second aspect of the invention, since the straight travel preventing member that prevents the straight travel of light is moved on the optical path of the external light by the driving means, the reflection can be automatically prevented, and the burden on the user can be eliminated.

  Further, in the invention of claim 3, the linear travel prevention member that prevents the straight travel of the light is provided with a movable mechanism, and the user can display the light path of the external light so that the user can travel straight on the optical path of the external light. If the is moved, the reflection of outside light can be easily prevented, and the burden on the user can be reduced.

  In the invention of claim 4, since the rectilinear prevention member and the photographing part are integrally formed, the space for the rectilinear advance prevention member can be reduced, and the photographing system can be miniaturized.

  In the invention of claim 5, since the straight travel prevention member has a diffusibility with respect to the transmitted light, it is possible to actively utilize the external light for the illumination of the subject while preventing the reflection.

<First Embodiment>
<Overall configuration of shooting system>
FIG. 1 is a diagram showing an overall configuration of a photographing system 1A according to the first embodiment of the present invention. In the drawings subsequent to FIG. 1, three axes of X, Y, and Z that are orthogonal to each other are shown as appropriate in order to clarify the orientation relationship.

  The imaging system 1A places a subject such as a document (document) or a small article on a subject placement space P that serves as a placement area, and from a relatively short distance above the subject placement space P, This is a close-up photographing system for down-face photographing for photographing a subject. Further, the photographing system 1A is configured to be able to generate electronic image data by photographing a subject OB such as a paper document placed in the subject placement space P while maintaining a certain distance. The imaging system 1A can output image data generated by a personal computer, a printer, a projector, or the like that is electrically connected to an interface described later.

  The photographing system 1A is configured such that a camera unit (photographing unit) 10 configured as a digital camera that photoelectrically converts an image of a subject OB to generate electronic image data, and the camera unit 10 are separated upward from the subject OB by a certain distance. And a support base 20 functioning as a support means for supporting at a certain position. A light shielding unit 30 is provided on the camera unit 10, and the light shielding unit 30 and the camera unit 10 are integrally formed. The light shielding unit 30 will be described in detail later.

  The camera unit 10 includes a photographing lens 101 that forms a subject image. The taking lens 101 is movable in order to change the focus state of the subject. In addition, the photographing lens 101 can adjust the aperture diameter of the diaphragm in order to change the amount of incident light.

  The support base 20 is a camera support stand for down-face photography having a ground leg extending along the edge of the subject placement space P. Further, the support base 20 supports the camera unit 10 and can be extended and contracted, and an L-shape disposed in the same plane in the vicinity of the subject placement space P (hereinafter abbreviated as a subject placement surface). The pedestal 270 is provided.

  The pedestal 270 is provided with an external interface (I / F) 203 and an operation unit 204 including a plurality of buttons.

  The external I / F 203 includes a display interface and can output the generated image data to a display device 40 (FIG. 4) such as an electrically connected projector. Thereby, direct connection with the external display apparatus 40 is attained, and the display apparatus 40 can be directly controlled.

  The support 260 is connected to a pedestal 270 serving as a base, and the angle with the subject placement surface is variable, and a support drive mechanism 207 is provided as a drive mechanism for the connection. Further, the angle with respect to the subject placement surface can be detected by a strut angle sensor (not shown). As shown in detail in the cross-sectional view of FIG. 2, the column driving mechanism 207 includes a motor M1 that is a driving force source and a gear train GT1 that includes a plurality of spur gears. The gear train GT1 transmits the rotational motion of the driving shaft SF1 of the motor M1 to the driven shaft SF2. The driven shaft SF2 is inserted through a through hole provided at a connection end of the support 260 with the base 270. Further, the driven shaft SF2 is fixed to the connecting member 280. Therefore, when electric power is supplied to the motor M1 to generate driving force, the generated driving force is transmitted from the driving shaft SF1 to the driven shaft SF2, and the angle that the column 260 makes with the subject placement surface changes.

  Moreover, the support | pillar 260 is provided with the support | pillar expansion-contraction mechanism 208 for changing the length. The column 260 includes tubular members 260 a and 260 b having different diameters, and the tubular member 260 a to which the camera unit 10 is attached is loosely inserted into the tubular member 260 b connected to the pedestal 270. The length of the support can be detected by a support length sensor (not shown). As shown in detail in the perspective view of FIG. 3, the column expansion / contraction mechanism 208 includes a motor M2 that is a driving force source and a gear train GT2 that includes a plurality of bevel gears. The gear train GT2 transmits the rotational motion of the driving shaft SF3 of the motor M2 to the driven shaft SF4. The driven shaft SF4 is threaded on its surface and is fixed to the tubular member 260a so that it can be screwed together. Therefore, when electric power is supplied to the motor M2 and driving force is generated, the generated driving force is transmitted from the driving shaft SF1 to the driven shaft SF2, and the degree of screwing between the above-described male screw and female screw changes. As a result, the length L of the support 260 changes, and the angle of view of the subject OB can be arbitrarily adjusted in the document shooting mode.

  FIG. 4 is a diagram illustrating functional blocks of the photographing system 1A.

  The camera unit 10 includes an imaging unit 103 that acquires an image of the subject OB imaged by the photographing lens 101, an image processing unit 104 that is connected to the imaging unit 103, and an image storage that stores image-processed image data. And an overall control unit 120 that is connected so as to be capable of transmission.

  Further, the camera unit 10 includes an external interface (I / F) 110 that is connected to the overall control unit 120 so as to be able to transmit, an operation unit 111, a liquid crystal monitor 112, a storage medium 113, and a light shielding control unit 130. Yes.

  The imaging unit 103 is configured as, for example, a CCD, and is an imaging device provided at an appropriate position behind the photographing lens 101. The imaging unit 103 converts the subject image formed by the photographing lens 101 into image signals of R (red), G (green), and B (blue) color components (a signal sequence of pixel signals output from each pixel). Convert and output.

  The image processing unit 104 includes a CDS (correlated double sampling) circuit, an AGC (auto gain control) circuit, and an A / D converter, and performs predetermined signal processing on the image signal output from the imaging unit 103. Specifically, noise reduction of the image signal is performed by the CDS circuit, the level of the image signal is adjusted by the AGC circuit, and the digital signal is converted by the A / D converter.

  Further, the image processing unit 106 performs black level correction, white balance correction, and γ correction on the A / D converted image data. In the black level correction, the black level of the image data is corrected to a predetermined reference level. In the white balance correction, the level conversion of each color component of R, G, and B of the pixel data is performed so that the white balance can be obtained in the image data after the γ correction. This level conversion is performed using a level conversion table input from the overall control unit 120. The conversion coefficient of the level conversion table is set for each photographing by the overall control unit 120. The γ correction is to correct the gradation of pixel data. The image data that has undergone black level correction is also output to the overall control unit 120, and is used for exposure control, autofocus (hereinafter abbreviated as AF) control, flash control, and photometry for the above-described level conversion table setting. Used for calculation and colorimetric calculation.

  The image storage unit 107 is a buffer memory that temporarily stores image data that has been processed by the image processing unit 104. The image storage unit 107 has a storage capacity for at least one frame.

  The external I / F 110 is, for example, a USB standard interface, and can output image data and transmit / receive control signals to the display device 40 such as a projector.

  The operation unit 111 includes a shutter button, a power switch, and the like. When a user performs a predetermined operation on the operation unit 111, the operation content is input to the overall control unit 120 and reflected in the operation state of the camera unit 10. The Rukoto.

  The liquid crystal monitor 112 is provided on the back surface of the camera unit 10 (the surface opposite to the photographing lens 101), and is a part that performs monitor display of a captured image, reproduction display of a recorded image, and the like.

  The storage medium 113 is configured as a memory card that can be inserted into and removed from the camera unit 10, for example, and stores captured image data.

  The light shielding control unit 130 includes a control circuit that controls rotational driving of the light shielding plate 32 (described later) and an actuator that expands and drives the light shielding plate 32, and is a part that directly controls the light shielding unit 30. . The light shielding operation by the light shielding controller 130 will be described in detail later.

  The overall control unit 120 is a microcomputer that includes a ROM 121 and a RAM 122. The ROM 121 is provided with a program unit 123. The program unit 123 stores a control program for overall control of the photographing system 1A, constants and settings necessary for the control, and is used for exposure control. Program lines are also stored. Then, when the microcomputer as the overall control unit 120 executes the control program in the ROM 121, the overall control unit 120 controls each part of the camera unit 10 in an integrated manner. In addition, in a part of the storage area of the RAM 130, control parameters relating to shooting are stored as shooting parameters.

  The support base 20 includes an overall control unit 220 that is connected to the external I / F 203 and the operation unit 204 so as to be able to transmit, and is connected to the column driving mechanism 207 and the column expansion / contraction mechanism 208.

  The overall control unit 220 is a microcomputer including a ROM 221 and a RAM 222. When the microcomputer executes a program stored in the ROM 221, the overall control unit 220 comprehensively controls each part of the support base 20.

<Configuration of light shielding unit 30>
FIG. 5 and FIG. 6 are diagrams for explaining the configuration of the light shielding unit 30. FIG. 5 shows a perspective view of the light shielding unit 30, and FIG. 6 shows a longitudinal sectional view of the light shielding unit 30.

  The light shielding unit 30 includes a light shielding unit main body 31 provided on the back surface of the camera unit 10, a light shielding plate 32 that functions as a rectilinear prevention member that prevents light from traveling straight, and blocks external light, and a hook-shaped locking claw 33. have.

  The light shielding plate 32 is connected to the light shielding portion main body 31 with a hinge 30a, and is configured to be unfolded when the locking claw 33 is released.

  That is, in the light shielding plate 32, when the locking claw 33 is released and the locking is released in the state shown in FIG. 5A, the hinge 30b acting as a biasing member is used as shown in FIG. A rotation of 180 degrees about the rotation axis 30a is performed. As shown in FIG. 6 (b), the locking claw 33 is unlocked by operating the plunger 34 acting as an actuator in response to a command from the overall control unit 120 of the camera unit 10 via the light shielding control unit 130. The movable portion 34h is driven to draw the lower portion of the locking claw 33 toward the plunger 34.

  If the shielding of the external light by the light shielding plate 32 becomes unnecessary after the light shielding plate 32 is deployed as shown in FIG. 5 (b), the user manually performs FIGS. 5 (a) and 6 (a). When the light shielding plate 32 is returned to the locking position shown in FIG. 3 and the light shielding plate 32 is locked by the locking claw 33, the light shielding plate 32 can be stored.

  Further, as shown in FIG. 7, the light shielding unit 30 can be rotated around the rotation axis AS on the camera unit 10 in a state where the light shielding plate 32 is unfolded. A rotation drive mechanism that rotates the light shielding unit 30 with the rotation axis AS will be described below.

  FIG. 8 is a diagram for explaining the rotation drive mechanism RM. This figure shows a cross section of the camera unit 10 in the XY plane.

  The camera unit 10 includes a rotation drive mechanism RM. The rotation drive mechanism RM includes a motor 35 that functions as an actuator, and a gear train 36 for transmitting the drive force of the motor 35 to the rotation axis AS, and moves the light shielding plate 32 along a predetermined movement path. It functions as a driving means. With such a configuration of the rotation drive mechanism RM, when the motor 35 is driven by a command from the overall control unit 120 of the camera unit 10, torque is generated on the rotation axis AS and is connected to the rotation axis AS. 31 will rotate as shown in FIG.

  A light shielding operation using the light shielding unit 30 having the above configuration will be described below.

<About shading operation>
First, a light shielding method necessary to prevent reflection will be described.

  FIG. 9 is a schematic diagram for explaining a light shielding method.

  As shown in FIG. 9A, when the incident light LI as external light is regularly reflected by the subject OB and is incident on the camera unit 10, when the subject OB is imaged by the camera unit 10, the reflection part on the subject OB is reflected. Reflection occurs in OBf.

  In this case, by arranging the light shielding plate 32 as shown in FIG. 9B, the incident light LI reflected by the subject OB does not enter the camera unit 10, so that reflection can be prevented.

  Here, considering the relationship between the incidence and reflection of light shown in FIG. 9, the closer the camera unit 10 is to the subject OB, the shorter the distance between the camera unit 10 and the incident light LI. (Area) can be reduced. On the other hand, it is necessary to avoid that the light shielding plate 32 falls within the photographing range of the camera unit 10. Therefore, the position of the light shielding plate 32 in the present embodiment is arranged directly above the camera unit 10 that is outside the shooting image frame and relatively close to the subject OB. With the arrangement of the light shielding plate 32, the light shielding plate 32 can be made relatively small, and the incident light LI can be blocked efficiently even if the movement amount (rotation amount) of the light shielding plate 32 is small.

  Next, the light shielding operation by the light shielding plate 32 in the imaging system 1A will be described.

  First, the imaging system 1A captures a subject and acquires luminance information from the image data. Then, from the luminance information, the coordinates (X1, Y1) of the highest luminance point having the highest luminance value among the high luminance portions OBh of the subject OB shown in FIG. 10 are specified (FIG. 11). That is, information on a high luminance part in the subject OB is acquired based on the captured image data.

  Then, based on the coordinate information of the point with the highest luminance and the information of the height of the camera unit 10, that is, the distance HT from the subject OB to the camera unit 10 shown in FIG. 10, the V-shaped incident light LJ shown in FIG. , That is, an optical path of external light that causes reflection on the subject OB. Specifically, coordinates (X2, Y2) through which the incident light LJ passes on the XY plane on the light shielding unit 30 are obtained (FIG. 11).

  Next, the light shielding unit 30 is rotated by driving the rotation driving mechanism RM so as to block the incident light LJ passing through the coordinates (X2, Y2), and the light shielding plate 32 is placed on the optical path of the external light causing the reflection. Is moved (FIG. 13).

  With the above-described light shielding operation, the optical path of the external light that causes the reflection can be specified by a simple calculation regardless of the thickness and shape of the subject OB and the distance to the subject OB, and the reflection on the subject OB can be prevented. .

  Note that, as described above, not only the highest luminance point of the subject OB is obtained, but a high luminance region of the subject OB having a predetermined luminance value or more is obtained, and the barycentric coordinates of the high luminance region are calculated. May be. This method will be specifically described.

  FIG. 14 is a diagram for explaining a determination criterion for specifying a high luminance point of the subject OB. This figure shows a subject OB imaged with 12 × 12 pixels. And in order to prescribe | regulate a pixel position, the number of 1-12 is attached | subjected to the vertical direction, and the codes | symbols of a-1 are attached | subjected to the horizontal direction. In addition, pixels having a predetermined luminance value (threshold value) α or less are represented by a shaded pattern, pixels exceeding the luminance value α are represented by no pattern, and the imaging center of the camera unit 10 is represented by a point O. The brightness value α is preferably changed according to the shooting environment, the shooting target, and the exposure control state. Therefore, an appropriate brightness value α is calculated and set for each light shielding operation or set by the user before the light shielding operation. Like that.

  In FIG. 14, the high-intensity region Eh of the subject OB is composed of nine pixels of vertical pixel positions 2 to 4 and horizontal pixel positions h to j, and the coordinates of the pixel closest to the imaging center O are (4 H), and the coordinates of the pixel farthest from the imaging center O are (2, j). Therefore, an intermediate point (3, i) between the pixel closest to the imaging center O and the pixel farthest from the imaging center O is obtained, and this intermediate point is set as the high luminance point of the subject OB with the center of gravity of the high luminance region Eh. Even with such a method, the high luminance point can be easily and accurately specified.

<Operation of Shooting System 1A>
The relationship between the above-described light shielding operation and the overall operation of the imaging system 1A will be described.

  15 to 17 are flowcharts for explaining basic operations of the imaging system 1A. Here, FIG. 15 shows the photographing operation of the imaging system 1A, FIG. 16 shows the focusing operation of the imaging system 1A, and FIG. 17 shows the light shielding operation.

  First, the photographing operation of the imaging system 1A will be described with reference to FIG.

  In step ST <b> 1, the user operates the operation unit 204 to instruct the camera unit 10 to shoot the subject OB.

  In step ST2, it is determined whether or not the camera unit 10 performs autofocus (AF) processing. If AF processing is performed, the process proceeds to step ST3. If AF processing is not performed, the process proceeds to step ST4.

  In step ST3, AF driving is performed. Here, automatic focusing is performed by driving the photographic lens 101 with a drive motor (not shown).

  In step ST4, the optical path of external light that causes reflection is specified. Specifically, as shown in FIG. 12, the optical path of the incident light LJ is obtained based on the high luminance part OBh on the subject OB.

  In step ST5, a light shielding operation is performed. Specifically, as shown in FIG. 13, an operation of rotating the light shielding plate 32 to block the optical path of the incident light LJ is performed.

  In step ST6, the camera unit 10 captures the subject OB. That is, the image data of the subject OB is acquired by the imaging unit 103.

  The image data acquired by the imaging unit 103 is subjected to image processing by the image processing unit 104, and then a projection image is generated. Thereafter, the projection image data is transmitted to the display device 40 and displayed.

  Next, the focusing operation of the imaging system 1A will be described with reference to FIG.

  In step ST <b> 11, when the user operates the operation unit 204, a focusing instruction is given to the camera unit 10.

  In steps ST12 to ST14, operations similar to those in steps ST3 to ST5 shown in the flowchart of FIG. 15 are performed.

  In addition, a light shielding operation of the imaging system 1A will be described with reference to FIG.

  In step ST <b> 21, the user operates the operation unit 204 to give a light shielding instruction to the light shielding unit 30.

  In steps ST22 to ST23, operations similar to those in steps ST4 to ST5 shown in the flowchart of FIG. 15 are performed.

  Due to the operation of the imaging system 1A described above, the external light that causes the reflection is blocked by the automatic rotation of the light shielding plate 32, so that a burden for preventing the reflection of the external light becomes unnecessary.

  As a result, even when undesired outside light is reflected when the subject system OB is photographed by the photographing system 1A, the interior lighting is turned off, or the curtain is closed to block outside light incident from the outside. Without changing the surrounding environment, it is possible to shoot with the outside light removed by the operation of the photographic system 1A itself. In addition, since there is no member that obstructs the instruction, movement, and operation of the subject OB around the subject OB, a smooth presentation can be performed. In addition, since the imaging system 1A does not require a dedicated lighting device and the imaging system 1A itself has a function of preventing reflection, the presentation can be performed in a bright environment where the room lighting is turned on, and the presentation can proceed well. .

  Further, when the subject OB is photographed and stored prior to the presentation, the photographing operation is normally performed with the room light turned on. Also in this case, the reading operation (photographing operation) of the subject OB can be performed in a state in which the indoor lighting is turned on without paying attention to the reflection of the illumination light or the outdoor light.

  In the imaging system 1A, it is not essential to specify the optical path of incident light that causes reflection after the subject OB is placed in the subject placement space P, and the optical path before the subject OB is placed. May be specified. This operation will be described below.

  First, the imaging system 1A captures a state before the subject OB is placed in the subject placement space P, that is, a state where the subject OB does not exist, and acquires luminance information in an initial state. Based on the luminance information in the initial state, as shown in FIG. 11, the coordinates of the point (X1, Y1) with the highest luminance are obtained, and information on the coordinates and the distance HT from the subject placement space P to the camera unit 10 are obtained. Based on (see FIG. 10), the optical path of the incident light LJ is specified as shown in FIG. Then, the light shielding plate 32 is rotated so as to block the incident light LJ on the optical path. As a result, the process for specifying the optical path of the external light can be performed before the subject OB is placed, and thus a quick light blocking operation is possible.

  Here, even if the subject placement space P is not a single color, has a non-uniform pattern, or is a material that absorbs light, it is difficult to accurately identify the optical path. In some cases, a high-intensity position detection chart CT as shown in FIG. 18 may be placed in the subject placement space P and photographed. The high luminance position detection chart CT is a plate-like member having a single color and uniform gloss, and is set so as to cover the photographing image frame of the camera unit 10. As a result, the high luminance position can be easily specified by photographing the high luminance position detection chart CT and acquiring the luminance information.

Second Embodiment
FIG. 19 is a diagram illustrating an overall configuration of an imaging system 1B according to the second embodiment of the present invention. FIG. 20 is a view of the photographing system 1B as viewed from above.

  The photographing system 1B has a configuration similar to that of the photographing system 1A of the first embodiment, but the camera unit is different.

  That is, in the camera unit 50 of the imaging system 1B, eight optical path indicators 51 are added to the camera unit 10 of the first embodiment, and the rotation drive mechanism RM shown in FIG. A mechanism for rotating the light shielding plate 32, that is, a moving mechanism for moving the light shielding plate 32 along a predetermined movement path is provided.

  The eight optical path indicators 51 are constituted by, for example, LEDs, and are installed at the center of the four side surfaces and the four corners of the camera unit 50. Then, by turning on the optical path indicator 51 at the position closest to the optical path of the external light specified from the luminance information of the subject OB, the direction of the optical path of the external light causing the reflection is transmitted to the user. That is, the optical path indicator 51 functions as a display unit that performs display indicating the optical path of external light.

  Then, by turning on the optical path indicator 51, the user manually rotates the light shielding plate 32 in the direction of the optical path indicator 51 to be turned on, and interrupts the optical path of incident light that causes reflection as shown in FIG. The rotation of the light shielding plate 32 is not necessarily performed manually by the user, and may be automatically performed as in the first embodiment.

  The operation of the imaging system 1B described above indicates the direction of the optical path of the external light where the reflection occurs, so that the user can easily obtain an index for rotating the light shielding plate, and the user can rotate the light shielding plate based on this index. Thus, the burden for preventing the reflection of outside light can be reduced.

  In the imaging system 1B, it is not essential to provide the camera unit 50 with a display device for indicating the optical path of external light. For example, a display panel or the like may be provided on the base 270.

  FIG. 21 is a diagram for explaining the display panel 271 showing an optical path of external light.

  The display panel 271 is configured by a liquid crystal display, for example, and is provided on the upper surface of the pedestal 270. The display panel 271 displays the optical path information DL. This optical path information DL corresponds to the eight optical path indicators 51 described above and can indicate eight directions. This optical path information DL represents a display mode different from other display elements, for example, that the optical path of external light is located in the direction indicated by the display element DLa brighter than the other display elements.

  Also by the operation of the display panel 271 described above, the user can easily obtain an index for rotating the light shielding plate. If the user rotates the light shielding plate based on the index, a burden for preventing external light from being reflected is obtained. It can be reduced.

  The liquid crystal panel 271 may be configured to display not only the optical path information DL but also information such as the state of the photographing system 1B.

<Modification>
◎ For the light shielding part in each of the above embodiments, when storing the light shielding plate after the light shielding plate is deployed, it is not essential to manually return it to the locking position, and it is stored in the locking position by automatic control by the actuator. You may do it.

  Further, the light shielding plate may be formed of a diffuse plate made of polished glass, for example. In this way, when a diffusible member (straight-ahead prevention member) is used for transmitted light, since the external light is diffused without being concentrated on a part of the subject, the subject can be illuminated uniformly, and the external light can be radiated. Can be actively used.

  ◎ The camera unit in each of the above embodiments is not necessarily configured as a digital camera, and may be configured similar to a digital camera when editing or adjustment of a captured image is realized inside the support base 20. In the case where the photographed subject is simply projected onto the display device, an analog input / output configuration may be used.

  In each of the above embodiments, it is not essential to connect to a display device such as a projector in the external I / F, and it may be connected to a personal computer or a printer.

  ◎ For the optical path indicator in the second embodiment, it is not essential for the user to recognize the incident optical path by turning it on, and one optical path indicator is turned off when all the optical path indicators are turned on. Thus, the direction of the optical path may be communicated to the user.

  The “external light” in the present invention corresponds to light other than light emitted from a lighting device dedicated to the photographing system, for example, outdoor light such as incident light or sunlight by indoor lighting.

1 is a diagram illustrating an overall configuration of a photographing system 1A according to a first embodiment of the present invention. It is a figure for demonstrating the support | pillar drive mechanism. It is a figure for demonstrating the support | pillar expansion-contraction mechanism 208. FIG. It is a figure which shows the functional block of imaging | photography system 1A. 4 is a diagram for explaining a configuration of a light shielding unit 30. FIG. 4 is a diagram for explaining a configuration of a light shielding unit 30. FIG. 4 is a diagram for explaining a light shielding operation in a light shielding unit 30. FIG. It is a figure for demonstrating the rotational drive mechanism RM. It is a schematic diagram for demonstrating the light-shielding method. It is a figure for demonstrating light-shielding operation | movement. It is a figure for demonstrating light-shielding operation | movement. It is a figure for demonstrating light-shielding operation | movement. It is a figure for demonstrating light-shielding operation | movement. It is a figure for demonstrating the determination criteria which identify the high-intensity point of the to-be-photographed object OB. It is a flowchart explaining basic operation | movement of 1 A of imaging systems. It is a flowchart explaining basic operation | movement of 1 A of imaging systems. It is a flowchart explaining basic operation | movement of 1 A of imaging systems. It is a figure for demonstrating the method of specifying a high-intensity position using high-intensity position detection chart CT. It is a figure which shows the whole structure of the imaging | photography system 1B which concerns on 2nd Embodiment of this invention. It is the figure which looked at imaging system 1B from the upper part. It is a figure for demonstrating the display panel 271 which shows the optical path of external light.

Explanation of symbols

1A, 1B Imaging system 10, 50 Camera unit 20 Support base 30 Light shielding unit 32 Light shielding plate 33 Locking claw 51 Optical path indicator 203 External interface (I / F)
204 Operation Unit 260 Support Column 270 Base 271 Display Panel AS Rotation Axis CT High Brightness Position Detection Chart OB Subject OBh High Brightness Part P Subject Placement Space RM Rotation Drive Mechanism

Claims (5)

A photographing system for photographing a subject placed in a predetermined placement area,
(a) a photographing unit that generates image data based on a subject image obtained through the photographing lens;
(b) support means for supporting the imaging unit above the predetermined placement area;
(c) based on the image data, an acquisition means for acquiring information on a high-luminance part in the subject;
(d) based on information on the distance from the imaging unit to the subject and information on the high-luminance part, a specifying unit that specifies an optical path of external light that causes reflection on the subject;
An imaging system comprising: The imaging system according to claim 1,
(e) a straight travel prevention member that prevents the straight travel of light;
(f) driving means for moving the straight travel preventing member along a predetermined movement path;
(g) Control means for moving the straight travel prevention member on the optical path of the external light by the driving means;
An imaging system further comprising: The imaging system according to claim 1,
(h) a straight travel prevention member that prevents the straight travel of light;
(i) a movement mechanism in which the straight travel prevention member is movable along a predetermined movement path;
(j) display means for displaying the optical path of the external light;
An imaging system further comprising: The imaging system according to any one of claims 1 to 3,
The support means is
(b-1) a base placed in the vicinity of the predetermined placement area;
(b-2) a support column coupled to the base and supporting the imaging unit;
Have
The photographing system, wherein the rectilinear prevention member and the photographing unit are integrally formed. The imaging system according to any one of claims 1 to 4,
The photographing system, wherein the straight travel prevention member has diffusibility with respect to transmitted light.

Images