JP2006046942A - Determining device and surface data recording apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surface data recording apparatus capable of well acquiring the surface state of matter which has an almost planar shape having uneveness on its surface, and to provide a determining device capable of properly determining identity between matters. <P>SOLUTION: Light sources 11 and 12 and a CCD camera 30 are fixed above a picture 21 and a holding part 22 can be moved in a moving direction AR1, while holding the picture 21. A plurality of CCDs (light-receiving parts), extending in the direction almost vertical to the moving direction AR1 of the picture 21, are provided to the body part 32 of the CCD camera 30. With this constitution, the surface uneven state and color data of the picture 21 can be acquired at the same time by a single imaging processing. Further, by comparing the surface data of the picture 21 with the preliminarily acquired surface data of the picture to decide on the identity of two pictures. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a surface information recording apparatus that records surface information of a substantially planar object having irregularities on the surface, and identity between two objects based on surface information of a substantially planar object having irregularities on the surface It is related with the determination apparatus which determines.

  2. Description of the Related Art Conventionally, there has been known an apparatus for inspecting a surface state of an inspection object by imaging regular reflected light and diffused light (scattered light) reflected by an object with a CCD camera and performing image processing on the captured image data. (For example, Patent Document 1).

Japanese Patent Laid-Open No. 06-137844

  However, in the inspection apparatus of Patent Document 1, it is necessary to prepare at least a CCD camera for detecting specularly reflected light and a CCD camera for detecting diffused light, which increases the installation space for the inspection apparatus. There arises a problem that the manufacturing cost of the inspection apparatus increases.

  In addition, if one CCD camera of the inspection apparatus disclosed in Patent Document 1 is used to detect specularly reflected light and diffused light, it is necessary to perform the imaging process twice, resulting in a problem that the number of inspection steps increases.

  Furthermore, in the inspection apparatus using coloring and art materials described in Patent Document 1, it is possible to detect defects and uneven coating, but the surface has irregularities like an art work such as a painting, and has a substantially planar shape. It is not possible to determine the identity between objects.

  Therefore, in the present invention, for a substantially planar object having irregularities on the surface, a surface information recording apparatus that can acquire and record the surface information of the object well, and a determination that can satisfactorily determine the identity between the objects An object is to provide an apparatus.

  In order to solve the above-mentioned problem, the invention of claim 1 is a determination device for determining the identity between two objects based on surface information of a substantially planar object having irregularities on the surface, wherein (a) An irradiation unit that irradiates the object with light, and (b) a single light detection unit that acquires the surface information by detecting light irradiated from the irradiation unit and reflected by the object; (c) a recording unit that records the surface information acquired by the single light detection unit as image data; and (d) a first surface acquired by the single light detection unit with respect to the first object. The identity between the first and second objects is determined based on the information and the second surface information previously detected by the single light detection unit and recorded in the recording unit with respect to the second object. A determination unit for determining, the irradiation unit (a-1) visible light to the object A first light source for irradiating light outside the area; and (a-2) a second light source for irradiating the object with visible light including three primary colors of light; and 1) a regular reflection light receiving unit that receives regular reflection light irradiated from the first light source and regularly reflected from the object; and (b-2) diffuse reflection from the object irradiated from the second light source. A plurality of diffused light receiving portions that receive the diffused light substantially simultaneously with the specularly reflected light, and the surface information is based on reflected light that is irradiated from the first light source and reflected by the object. 1 image data and second image data based on diffused light irradiated from the second light source and reflected by the object, and the determination unit is based on the first and second surface information. , (I) from the first image data of both objects, the identity of the concavo-convex state between the two objects is determined from (ii) the second image data of both objects The identity of the color information between the both objects, and judging, respectively.

  According to a second aspect of the present invention, in the determination apparatus according to the first aspect of the invention, each of the plurality of diffused light receiving units corresponds to a corresponding color among red, blue, and green, which are constituent elements of the three primary colors of the light. Of the three primary colors of the light, the second image data includes first diffused light image data based on red light, second diffused light image data based on blue light, and green Based on the third diffused light image data, and the determination unit determines the identity of the color information between the two objects for each of the first to third diffused light image data. .

  Further, the invention of claim 3 is the determination apparatus according to the invention of claim 1, wherein the determination unit is configured to (d-1) detect the light from the detected image data detected by each of the plurality of diffused light receiving units. A first generation unit for generating first diffused light image data by extracting a component corresponding to red light from among the three primary colors, and (d-2) extracting a component corresponding to blue light from among the three primary colors of light A second generation unit that generates second diffused light image data; and (d-3) generating third diffused light image data by extracting a component corresponding to green light from the three primary colors of light. The surface information recorded on the recording unit includes first to third diffused light image data, and the determination unit includes the first to third diffused light image data. For each of the above, the identity of the color information between the two objects is determined.

  The invention according to claim 4 is the determination apparatus according to any one of claims 1 to 3, wherein (e) the movement of moving the object relative to the irradiation unit and the light detection unit. And each of the regular reflection light receiving unit and the plurality of diffused light receiving units has a plurality of light receiving elements arranged in a direction substantially perpendicular to a moving direction of the moving unit. And

  Further, the invention of claim 5 is the determination device according to claim 4, wherein the light emitted from the first light source has a slit extending in a direction substantially perpendicular to the moving direction of the moving means. It passes through and reaches the object.

  The invention according to claim 6 is the determination apparatus according to claim 4 or 5, wherein the object is held in a horizontal posture, and the moving means moves the object in a horizontal direction. It is characterized by.

  According to a seventh aspect of the present invention, in the determination device according to any one of the first to sixth aspects, the object is a painting.

  The invention of claim 8 is a surface information recording apparatus for recording surface information of a substantially planar object having irregularities on the surface, wherein (a) an irradiation unit for irradiating the object with light; b) a single light detection unit that acquires the surface information by detecting light emitted from the irradiation unit and reflected by the object; and (c) acquired by the single light detection unit. A recording unit that records the surface information as image data, the irradiation unit (a-1) a first light source that irradiates the object with light outside the visible light region; and (a-2) And a second light source that irradiates the object with visible light including three primary colors of light, and the light detection unit is (b-1) regularly reflected by the object irradiated from the first light source. A specularly reflected light receiving unit that receives the specularly reflected light, and (b-2) diffused light that is irradiated from the second light source and diffusely reflected by the object. A plurality of diffused light receiving parts that receive the reflected light substantially simultaneously, and the surface information is first image data based on the reflected light that is irradiated from the first light source and reflected by the object; And second image data based on diffused light emitted from a second light source and reflected by the object.

  The invention according to claim 9 is the surface information recording apparatus according to claim 8, wherein each of the plurality of diffused light receiving units corresponds to red, blue, and green that are constituent elements of the three primary colors of light. The second image data includes first diffused light image data based on red light, second diffused light image data based on blue light, and green light among the three primary colors of light. And the third diffused light image data based on the number.

  Further, the invention of claim 10 is the surface information recording apparatus according to the invention of claim 8, wherein (d) from the detected image data detected by each of the plurality of diffused light receiving parts, (d-1) the light A first generation unit for generating first diffused light image data by extracting a component corresponding to red light from among the three primary colors, and (d-2) extracting a component corresponding to blue light from among the three primary colors of light A second generation unit that generates second diffused light image data; and (d-3) generating third diffused light image data by extracting a component corresponding to green light from the three primary colors of light. A determination unit including a third generation unit, wherein the surface information recorded in the recording unit includes first to third diffused light image data.

  The invention according to claim 11 is the surface information recording apparatus according to any one of claims 8 to 10, wherein the object is a painting.

  According to the first to seventh aspects of the invention, the first image data based on the reflected light and the second image data based on the diffused light with respect to the surface information of the substantially planar object having irregularities on the surface. Can be detected simultaneously by a single light detection unit. Further, the detected image data can be recorded on the recording unit as the surface information of the object.

  Thereby, based on the first surface information acquired by the single light detection unit with respect to the first object and the second surface information previously recorded in the recording unit with respect to the second object, the first and first The identity between two objects can be determined. That is, not only the identity of the color information between the two objects but also the identity of the uneven state between the two objects can be determined to determine the identity between the two objects. Therefore, sensory evaluation that depends on the sense of the examiner is not required, and the identity between both objects can be determined quantitatively.

  According to the first to seventh aspects of the invention, the first light source emits light outside the visible light region, and the second light source emits light in the visible light region. Accordingly, the specular reflection light receiving unit suppresses the influence of light in the visible light region irradiated from the second light source, and the diffused light receiving unit is light outside the visible light region irradiated from the first light source. The first and second image data can be acquired while suppressing the influence of the above. Therefore, the surface information of the objects can be acquired well, and the identity between the objects can be determined well.

  According to the first to seventh aspects of the invention, the surface information (first and second image data) of the object can be acquired by a single light detection unit. Therefore, the light receiving operation of a plurality of times is not required, and the determination man-hour can be reduced.

  Furthermore, according to the first to seventh aspects of the present invention, since it is not necessary to provide a plurality of light detection units, the manufacturing cost of the apparatus and the installation space of the apparatus can be reduced.

  In particular, according to the second aspect of the present invention, it is possible to determine the identity of the color information between the objects from the first to third diffused light image data acquired by each of the plurality of diffused light receiving units. . That is, the image data acquired by each of the plurality of diffused light receiving units can be used as the surface information of the object. Therefore, the calculation cost for associating the image data acquired by the plurality of diffused light receiving units with each diffused light image data can be reduced, and the determination time can be reduced.

  In particular, according to the third aspect of the present invention, (1) a component corresponding to red light is extracted from the detected image data detected by each of the plurality of diffused light receiving units and added together to obtain the first The diffused light image data is extracted by adding (2) components corresponding to blue light, and added together. (3) The component corresponding to green light is extracted and added. Third diffused light image data can be generated respectively. Further, the generated first and third diffused light image data can be recorded on the recording unit as the surface information of the object.

  Therefore, even when the amount of light detected by each of the plurality of diffused light receiving units is small, good diffused light image data can be acquired, and determination of the identity of color information can be performed with high accuracy.

  In particular, according to the fourth aspect of the present invention, the first image data based on the specularly reflected light and the second based on the diffused light are obtained by moving the object relative to the irradiation unit and the light detection unit. The image data can be acquired simultaneously. Therefore, the surface information of the object can be acquired by one light receiving operation while reducing the manufacturing cost and installation space of the apparatus.

  In particular, according to the fifth aspect of the present invention, the light emitted from the first light source passes through the slit, so that the light outside the visible light region with good linearity can be regularly reflected by the object. . Therefore, the first image data related to the uneven state can be acquired satisfactorily.

  In particular, according to the invention described in claim 6, the first and second image data can be acquired simultaneously by moving the object in the horizontal direction with respect to the irradiation unit and the light detection unit.

  In particular, according to the seventh aspect of the present invention, it is possible to acquire the unevenness state and color information on the surface of a work of art such as a picture as image data. Further, the detected image data can be recorded in the recording unit as the surface information of the painting. Thereby, based on the 1st surface information acquired by the light detection part, and the 2nd surface information previously recorded on the recording part, the identity of both pictures can be determined quantitatively. Therefore, the authenticity of the picture can be determined accurately and easily.

  According to the eighth to eleventh aspects of the present invention, the first image data based on the reflected light and the second image data based on the diffused light are simply used for the surface information of the object having an uneven shape on the surface. The image data can be simultaneously acquired by one light detection unit, and these image data can be recorded on the recording unit as surface information of the object. Therefore, it is possible to reduce the man-hours for acquiring the surface information of the object without requiring a plurality of light receiving operations. Furthermore, since it is not necessary to provide a plurality of light detection units, the manufacturing cost of the device and the installation space of the device can be reduced.

  According to the invention described in claims 8 to 11, light outside the visible light region is emitted from the first light source, and light in the visible light region is emitted from the second light source. . Accordingly, the specular reflection light receiving unit suppresses the influence of light in the visible light region irradiated from the second light source, and the diffused light receiving unit is light outside the visible light region irradiated from the first light source. The first and second image data can be acquired while suppressing the influence of the above. Therefore, the surface information of the object can be acquired favorably.

  In particular, according to the invention described in claim 9, since the calculation cost for associating the image data acquired by the plurality of diffused light receiving units with each diffused light image data can be reduced, the surface information of the object is acquired. Time can be reduced.

  In particular, according to the invention described in claim 10, good diffused light image data can be acquired even when the amount of light detected by each of the plurality of diffused light receiving units is small.

  In particular, according to the eleventh aspect of the present invention, the unevenness state and color information on the surface of a work of art such as a picture can be acquired as image data.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<1. First Embodiment>
<1.1. Hardware configuration of determination device>
FIG. 1 is a diagram showing an example of the overall configuration of the determination apparatus 1 according to the first embodiment of the present invention. FIG. 2 is a diagram for explaining a method of receiving specularly reflected light from the light source 11 and diffused light from the light source 12 by the CCD 35 (35I, 35B, 35R, 35G) according to the first embodiment of the present invention. FIG. 1 and the subsequent drawings are attached with an XYZ orthogonal coordinate system in which the Z-axis direction is the vertical direction and the XY plane is the horizontal plane in order to clarify the directional relationship.

  The determination device 1 has irregularities on the surface like a work of art such as a painting 21, and for an object having a substantially planar shape, based on the surface information of the object (that is, the irregularity state and color information of the surface). It is an apparatus for determining the identity between objects. As shown in FIG. 1, the determination apparatus 1 mainly includes light sources 11 and 12 (12 a to 12 c) used as a light irradiation unit, and light that is irradiated from these light sources 11 and 12 and reflected by a painting 21. And a holding unit 22 that can move along the moving direction AR1 while holding the painting 21.

  As shown in FIG. 1, the light source 11 is illumination disposed above the painting 21 that is a determination target, and is used as a regular reflection light source that irradiates light in the infrared region in the present embodiment. The The light source 11 extends in a direction substantially perpendicular to the moving direction AR1 of the painting 21 as shown in FIG.

  A shielding plate 15 having a slit 16 is disposed between the light source 11 and the painting 21. Here, the slit 16 is substantially parallel to the light source 11 and extends in a direction substantially perpendicular to the moving direction AR <b> 1 of the painting 21.

  Thereby, the infrared light emitted from the light source 11 is narrowed by the slit 16. Therefore, by adjusting the positions of the light source 11, the slit 16, and the CCD camera 30, the infrared light from the light source 11 is irradiated onto the imaging range 21 b of the CCD camera 30 and the infrared light regularly reflected on the painting 21. Can be satisfactorily detected by the CCD camera 30. That is, the infrared light emitted from the light source 11 has an optical path P <b> 1 and is reflected on the painting 21. The infrared light reflected by the painting 21 is received as regular reflected light by the CCD camera 30.

  As shown in FIG. 1, the light sources 12 (12 a to 12 c) are a plurality of (three in this embodiment) illuminations arranged above the painting 21. In the present embodiment, the light sources 12a, 12b, and 12c are used as diffused light sources that emit blue light, red light, and green light (three primary colors of light), respectively. That is, the light emitted from the light sources 12a to 12c has optical paths P2, P3, and P4, respectively, diffuses in various directions, and is reflected by the painting 21. The light reflected by the painting 21 is received as diffused light by the CCD camera 30. Further, as shown in FIG. 1, each of the light sources 12 a to 12 c extends in a direction substantially perpendicular to the moving direction AR <b> 1 of the painting 21.

  The holding unit 22 holds the painting 21 that is the determination target in a horizontal posture. Further, the holding unit 22 is moved in the direction of the arrow AR1 (that is, the positive direction or the negative direction of the Y axis) by receiving the driving force transmitted from the driving unit 23. In this way, the painting 21 is moved back and forth in the horizontal direction by the holding unit 22 and the driving unit 23.

  The CCD camera 30 is a light detection unit that receives regular reflection light and diffused light that are emitted from the light source 11 and the light source 12 and reflected by the painting 21. As shown in FIGS. 1 and 2, the CCD camera 30 mainly includes a lens 31 and a main body 32 having a CCD 35 (35R, 35G, 35R, 35I).

  The regular reflection light P1 and diffused light P2 to P4 reflected by the painting 21 are incident on the lens 31 as shown in FIG. The lights P <b> 1 to P <b> 4 pass through the intermediate ring 33 and are imaged on the CCD 35 by the lens 31.

  Here, as shown in FIG. 2, the CCD 35 includes four light receiving element groups (light receiving portions) of CCDs 35B, 35R, 35G, and 35I. Each CCD 35B, 35R, 35G, 35I is configured by arranging a plurality of light receiving elements 36B, 36R, 36G, 36I in a direction (X-axis direction) substantially perpendicular to the moving direction AR1 of the painting 21 by the drive unit 23. Is done. That is, the CCD 35 includes four line sensors 35B, 35R, 35G, and 35I that extend in the X-axis direction.

  Further, as shown in FIG. 2, a blue filter 37B is provided on the lens 31 side portion of each light receiving element 36B constituting the CCD 35B. As a result, the filter 37B mainly transmits blue light corresponding to the color of the filter. Accordingly, each light receiving element 36B mainly detects blue light. That is, in the present embodiment, the CCD 35B is used as a light receiving unit that substantially receives the diffused light P2 that is irradiated from the light source 12a and reflected by the painting 21.

  Similarly, a red filter 37R is provided on the lens 31 side portion of each light receiving element 36R constituting the CCD 35R, and a green filter 37G is provided on a lens 31 side portion of each light receiving element 36G constituting the CCD 35G. Is provided. Accordingly, the CCDs 35R and 35G are used as light receiving units that substantially receive the diffused lights P3 and P4 that are irradiated from the light sources 12b and 12c and reflected by the painting 21, respectively.

  Further, as shown in FIG. 2, a filter 37 </ b> I that transmits light in the infrared region is provided at a portion on the lens 31 side of each light receiving element 36 </ b> I constituting the CCD 35 </ b> I. Therefore, each light receiving element 36I mainly detects infrared light. That is, in the present embodiment, the CCD 35I is used as a light receiving unit that substantially receives the specularly reflected light P1 irradiated from the light source 11 and reflected by the painting 21.

  As described above, the CCDs 35B, 35R, and 35G are used as diffused light receiving units that receive diffused light, and the CCD 35I is used as a regular reflected light receiving unit that receives specularly reflected light. Further, the specularly reflected light P1 and the diffused lights P2 to P4 reflected by the imaging portion 21b by one CCD camera 30 are simultaneously received, and an image based on the specularly reflected light for one line corresponding to the specularly reflected light P1. Data and image data based on one line of diffused light corresponding to each of the diffused lights P2 to P4 are simultaneously acquired.

  Therefore, by acquiring image data while moving the painting 21 by the drive unit 23, it is possible to simultaneously acquire image data based on regular reflection light and image data based on diffused light over the entire surface of the painting 21. That is, image data based on specularly reflected light and image data based on diffused light can be acquired simultaneously by one imaging operation.

  In the present embodiment, image data based on specularly reflected light and image data based on diffused light can be acquired by one CCD camera 30, and a plurality of imaging devices are not required. Therefore, the installation space and manufacturing cost of the determination apparatus 1 can be reduced.

  As shown in FIG. 1, the display unit 41 is connected to the control unit 50 via a signal line 59, and displays a graphic such as a predetermined character string or command button based on an image signal from the control unit 50. To do. Thereby, the operator of the determination apparatus 1 (hereinafter simply referred to as “operator”) can cause the determination apparatus 1 to execute a predetermined operation based on the content displayed on the display unit 41. The display unit 41 can also display a determination result of the identity between the paintings 21 described later.

  As shown in FIG. 1, the control unit 50 includes a memory 51 that stores programs, variables, and the like, and a CPU 55 that executes control according to the programs stored in the memory 51. As shown in FIG. 1, the control unit 50 is electrically connected to the light sources 11 and 12, the CCD camera 30, the drive unit 23, and the display unit 41 through a signal line 59. Therefore, according to the program stored in the memory 51, the CPU 55 executes control related to the irradiation process of the light from the light sources 11 and 12, the imaging process by the CCD camera 30, the moving process of the painting 21 by the drive unit 23, etc. at a predetermined timing. can do.

<1.2. Functional configuration of determination device>
FIG. 3 is a diagram for explaining a functional configuration of the determination apparatus 1. As shown in FIG. 3, in the CPU 55, the function of the determination device 1 is mainly realized by the correction processing unit 56 and the determination processing unit 57. In addition, the storage areas of the acquired data storage unit 52, the determination data storage unit 53, and the parameter storage unit 54 are mainly secured on the memory 51, and data used in the determination process is stored.

  The correction processing unit 56 performs correction processing such as shading correction on the image data captured by the CCD camera 30. Here, in the shading correction, density correction of image data is performed based on a shading parameter obtained by imaging a white reference plate (not shown). Thereby, it is possible to obtain favorable image data while suppressing the influence of the peripheral light reduction of the lens 31, the illumination unevenness of the light sources 11 and 12, and the sensitivity unevenness for each light receiving element 36 (36B, 36R, 36G, 36I). Can do.

  Two white reference plates may be prepared for the CCD 35I that receives specularly reflected light and the CCDs 35R, 35B, and 35G that receive diffused light. Also, prepare a white reference plate to be used for either specular reflected light or diffused light, and for the other, use the shading parameters obtained by applying predetermined calculation processing to one shading parameter. Correction may be performed.

  The acquired data storage unit 52 stores detected image data captured by the CCD camera 30 and subjected to shading correction by the correction processing unit 56. That is, the detected image data received by the CCD 35I and corrected by the correction processing unit 56 is stored in the acquired data storage unit 52 as acquired image data 52a. Similarly, the detected image data received by the CCDs 35R, 35B, and 35G and corrected by the correction processing unit 56 are stored in the acquired data storage unit 52 as acquired image data 52b, 52c, and 52d, respectively. If possible, the detected image data received by the CCDs 35R, 35B, 35G, and 35I without shading correction may be stored in the acquired data storage unit 52.

  The determination data storage unit 53 stores image data used for determination processing in the determination processing unit 57. That is, the image data based on the regular reflection light is stored in the determination data storage unit 53 as regular reflection light image data 53a. Similarly, image data based on red light, blue light, and green light in the diffused light is stored in the determination data storage unit 53 as diffused light image data 53b, 53c, and 53d, respectively.

  In the present embodiment, as described above, specular reflection light in the infrared region is received by the CCD 35I, and red light, blue light, and green light among the diffused light are received by the CCDs 35R, 35B, and 35G, respectively. . Therefore, the acquired image data 52a and the specular reflection light image data 53a are the same image data, and the acquired image data 52b to 52d and the diffused light image data 53b to 53d are the same image data.

  Here, the specularly reflected light image data 53a and the diffused light image data 53b, 53c, and 53d will be further described with reference to FIGS. FIG. 4A is a view of the oil painting 21 as one of the paintings as viewed from above. FIG. 4B is a diagram showing the uneven state in the height (Z-axis) direction at each X coordinate on the line segment L1.

  An oil painting is a painting drawn on canvas with a paint using oil as a solvent. The oil painting has irregularities on its surface depending on how the paint is applied. For example, the convex portion 21a in FIG. 4A is a portion where paints are stacked from other portions. That is, the shape curve 61 (see FIG. 4B) showing the uneven state on the line segment L1 indicates that the heights of the convex portions 21a and 21c in the Z-axis direction are other portions (0 ≦ X <X1, X2 < It becomes higher than the height (Z = Z0) of X <X3, X4 <X ≦ X5).

  FIG. 5 is a diagram for explaining the diffused light image data 53b based on the blue diffused light irradiated from the light source 12a and reflected by the oil painting 21. As shown in FIG. 5B, the diffused light density distribution curve 62 indicating the density state on the line segment L1 becomes higher at the convex portions 21a and 21c.

  Here, when the convex portions 21a and 21c are compared, as shown in FIG. 4B, the convex portion 21a has the maximum height (Z = Z2) at the position X = X2, and the maximum height of the convex portion 21c. (Z = Z1 when X = X3). On the other hand, as shown in FIG. 5B, the density value of the convex portion 21a is the maximum density (D = D1) at the position X = X1, and the maximum density value of the convex portion 21c (D = when D = X4). D2) becomes smaller. Thus, the uneven state and the color information can be used as independent evaluation data. Similarly, the diffused light image data 53c and 53d as color information based on red and green diffused light can be used as evaluation data independent of the uneven state.

  FIG. 6 is a diagram for explaining specular reflection light image data 53a based on specular reflection light (infrared light) irradiated from the light source 11 and reflected by the oil painting 21. FIG. As shown in FIG. 6 (b), the regular reflection light density distribution curve 63 showing the density state on the line segment L1 indicates that the density value D3 of the convex portions 21a and 21c is the density value of other portions (D = D4). Smaller. That is, in the convex portions 21a and 21c, the light emitted from the light source 11 is irregularly reflected, so that it becomes smaller than the density values of the portions other than the convex portions 21a and 21c. Therefore, the regular reflection light image data 53a can be used as evaluation data for evaluating the uneven state of the surface of the oil painting 21.

  Thus, in the present embodiment, the specular reflection light image data 53a and the diffused light image data 53b to 53d can be used as surface information indicating the state of the surface of the oil painting 21.

  Returning to FIG. 3, the recording processing unit 58 a is configured with the specular reflection light image data 53 a and the diffused light image data 53 b to 53 d stored in the determination data storage unit 53 by an external device such as a silicon disk drive or a hard disk drive. The recording process is performed on the external storage device 71. Thereby, based on the surface information of the oil painting 21 previously recorded in the external storage device 71 and the surface information stored in the determination data storage unit 53, a determination process described later can be executed.

  The determination processing unit 57 captures the surface information of the painting (hereinafter also referred to as “preliminary surface information”) recorded in advance in the external storage device 71, and is captured immediately by the CCD camera 30 and stored in the determination data storage unit 53. Based on the surface information (hereinafter also referred to as “immediate surface information”), a process of determining the identity between the picture indicated by the prior surface information and the picture indicated by the immediate surface information is executed. That is, the determination processing unit 57 compares the specular reflection light image data of the prior surface information and the immediate surface information to compare the concavo-convex state of the two paintings, and compares the diffuse light image data to determine the color information of both the paintings. Are each determined.

  The determination process of the identity of the uneven state is first performed by using the regular reflected light image data 53a, which is one of the immediate surface information stored in the determination data storage unit 53, and the prior surface information stored in the external storage device 71. Difference image data is created based on image data corresponding to the specularly reflected light image data 53a (hereinafter also referred to as “preliminarily specularly reflected light image data”). Here, the difference image data refers to image data in which the density difference between corresponding pixels in the determination image data 53 and the prior specular light image data is a density value.

  Next, by performing a binarization process on the difference image data, a pixel having a density value D equal to or greater than a threshold value D6 is extracted. Thereby, a part (pixel) different from the prior specular light image data is extracted from the specular light image data 53a.

  When the area P of the adjacent pixel group is equal to or larger than the allowable value P1 for the extracted pixel, it is determined that the uneven state of both paintings is not the same. On the other hand, when the area of the adjacent pixel group is smaller than the allowable value P1, it is determined that the unevenness state of both paintings is the same.

  In the unevenness state determination process, the binarization process may be executed after performing image processing such as sharpness processing and gradation conversion processing on the difference image data in advance. Further, the threshold value D6 and the allowable area value P1 may be obtained in advance through experiments or the like.

  Further, the color information identity determination process is executed by a process similar to the above-described unevenness state identity determination process.

  First, it corresponds to each of the diffused light image data 53b to 53d constituting the immediate surface information stored in the determination data storage unit 53 and the diffused light image data 53b to 53d among the prior surface information stored in the external storage device 71. Based on the image data (hereinafter also referred to as “pre-diffused light image data”), three difference image data corresponding to light of each of the three primary colors of light (blue, red, green) are created.

  Next, binarization processing is performed on each of the difference image data based on blue light, red light, and green light, and a portion (pixel) that is different between the diffuse light image data 53b to 53d and the corresponding pre-diffuse light image data is obtained. Extract.

  When the area P of the adjacent pixel group is equal to or larger than a predetermined allowable value for the extracted pixel, it is determined that the corresponding color information among blue, red, and green is not the same in both paintings. On the other hand, when the area of the adjacent pixel group is smaller than a predetermined allowable value, it is determined that the color information of both pictures is the same.

  In the color information determination process, the binarization process may be executed after image processing such as sharpness processing and gradation conversion processing is performed in advance on the difference image data, similarly to the determination process of the uneven state. . In addition, the threshold value and the allowable area value in binarization may be obtained in advance by experiments or the like.

  In the parameter storage unit 54, data used in the determination process, which is obtained in advance through experiments or the like, that is, the binarization threshold value used in the determination process of the uneven state and color information, the adjacent pixel group An area tolerance and a shading parameter used in the shading correction process are stored.

  The display processing unit 58b generates an image signal used for performing display control of the display unit 41. The display unit 41 is electrically connected to the display processing unit 58b through the signal line 59. Therefore, the display unit 41 executes display processing based on the image signal from the display processing unit 58b.

<1.3. Storage procedure of surface information and determination procedure of identity by determination device>
Here, it is executed by the determination apparatus 1 of the present embodiment.
(1) a procedure for pre-recording the surface information of a painting;
(2) a procedure for determining the identity between two paintings;
Will be described.

  FIG. 7 is a flowchart illustrating an example of a procedure for recording the surface information of the painting 21 by the determination apparatus 1 according to the present embodiment. In step S101, parameters necessary for the process (for example, shading parameters) are acquired from the parameter storage unit 54 (see FIG. 3) prior to the surface information storage process.

  Next, the picture 21 is imaged by the CCD camera 30 while the picture 21 held in the holding part 22 is moved by the drive part 23. And the image data based on the regular reflection light irradiated from the light source 11 and reflected by the painting 21 is acquired image data 52a, and the image data based on the diffused light irradiated from the light sources 12a to 12c and reflected by the painting 21 Are respectively stored in the acquired data storage unit 52 as acquired image data 52b to 52d (S102). That is, the acquired image data 52a to 52d are acquired simultaneously by one imaging process. Here, when the image is picked up by the CCD camera 30, each image data is subjected to shading correction by the correction processing unit 56 and subjected to density calibration.

  As described above, in the present embodiment, the acquired image data 52a and the specular reflection light image data 53a are the same image data, and the acquired image data 52b to 52d and the diffused light image data 53b to 53d are respectively the same image. It becomes data. Therefore, the acquired image data 52a to 52d may be copied to the determination data storage unit 53 as specular reflection light image data 53a and diffused light image data 53b to 53d, respectively. In addition, the actual image data may not be copied to the determination data storage unit 53, and information associated with the acquired image data 52a to 52d may be stored in the determination data storage unit 53.

  As described above, in the present embodiment, the specular reflected light image data 53a and the diffused light image data 53b to 53d are acquired without performing association processing such as arithmetic processing on the acquired image data 52a to 52d. can do. Therefore, the calculation cost can be reduced, and the time required for the storage process and the time required for the determination time described later can be reduced.

  And the process which stores the surface information of the painting 21 is complete | finished by recording the regular reflection light image data 53a and the diffused light image data 53b-53d of the determination data storage part 53 in the external storage device 71 as prior surface information. .

  FIG. 8 is a flowchart illustrating an example of a procedure for determining the identity between two pictures by the determination apparatus 1 according to the present embodiment. In step S201, as in step S101 of FIG. 7, parameters necessary for processing (for example, a binarization threshold value, an allowable value of the area of an adjacent pixel group, a shading parameter, etc.) from the parameter storage unit 54 are displayed in the parameter storage unit. 54.

  Next, in step S202, as in step S102 of FIG. 7, the painting 21 is captured by the CCD camera 30, and the specular reflection light image data 53a and the diffused light image data 53b to 53d are stored in the determination data storage unit 53. When imaged by the CCD camera 30, the image data is subjected to shading correction by the correction processing unit 56 and the density is calibrated.

  Subsequently, steps S203 and S204 are executed substantially simultaneously. That is, based on the prior surface information recorded in the external storage device 71 and the immediate surface information stored in the determination data storage unit 153, the determination processing of the identity of the uneven state of the surface of the painting 21 and the color information of the painting 21 The identity determination process is executed substantially simultaneously.

  And the determination result by step S203 and S204 is displayed on the display part 41, and a determination process is complete | finished (S205). That is, by comparing the prior surface information and the immediate surface information, it is determined that (1) the uneven state is the same and (2) all the color information corresponding to blue, red, and green are the same. If the determination result is “OK”, the fact that the determination result is “OK” is displayed on the display unit 41.

  On the other hand, when it is determined that even the unevenness state and one of the color information are not the same, the display unit 41 displays that the determination result is “NG”, and the prior surface information and the immediate surface information are different. The part is displayed on the display unit 41.

<1.4. Advantages of the determination apparatus according to the first embodiment>
As described above, the determination apparatus 1 according to the first embodiment includes the preliminary surface information recorded in the external storage device 71 and the immediate surface information captured by the CCD camera 30 and stored in the determination data storage unit 53. Based on the above, it is possible to determine the identity of a picture in which surface information is recorded in advance and a picture taken. That is, it is possible to determine not only the identity of the color information of both paintings but also the identity of the uneven state, thereby judging the identity between the two paintings. Therefore, sensory evaluation depending on the inspector's sense is not required, and authenticity judgment between pictures can be accurately and easily performed.

  Further, in the determination apparatus 1, the painting 21 can be captured by the single CCD camera 30 while the painting 21 is moved by the driving unit 23. Thereby, the specularly reflected light image data 53a based on the specularly reflected light emitted from the light source 11 and the diffused light image data 53b to 53d based on the diffused light emitted from the light source 12 (12a to 12c) are simultaneously acquired. Can do. That is, both image data can be acquired simultaneously by a single CCD camera 30 having a plurality of CCDs 35 (35B, 35R, 35G35I) without requiring a plurality of imaging devices. Therefore, the manufacturing cost and installation space of the determination apparatus 1 can be reduced.

  Moreover, when acquiring each of the regular reflection light image data 53a and the diffused light image data 53b to 53d, both image data can be acquired by a single imaging operation without requiring a plurality of imaging operations. Therefore, the time required for the determination process can be reduced, and the determination process for the identity between the two pictures can be easily executed.

<2. Second Embodiment>
Next, a second embodiment of the present invention will be described. The determination device according to the second embodiment is compared with the determination device 1 according to the first embodiment.
(1) Diffused light receiving method is different;
(2) Diffused light image data acquisition method is different;
Except for, it is the same as the first embodiment. Therefore, in the following, this difference will be mainly described. In the following description, the same reference numerals are given to the same components as those in the determination apparatus 1 according to the first embodiment. Since the components with the same reference numerals have already been described in the first embodiment, description thereof will be omitted in the present embodiment.

<2.1. Functional configuration of determination device>
FIG. 9 is a diagram for describing a functional configuration of the determination apparatus 1 according to the present embodiment. FIG. 10 is a diagram for explaining a method of receiving specularly reflected light from the light source 11 and diffused light from the light source 12 by the CCD 135 (135I, 135C, 135M, 135Y) of the present embodiment. .

  As shown in FIG. 10, the CCD 135 is configured by four light receiving element groups (light receiving portions) of CCDs 135C, 135M, 135Y, and 135I. Each CCD 135M, 135M, 135Y, 135I is configured by arranging a plurality of light receiving elements 136C, 136M, 136Y, 136I in a direction (X-axis direction) substantially perpendicular to the moving direction AR1 of the painting 21 by the drive unit 23. Is done. That is, the CCD 135 includes four line sensors 135C, 135M, 135Y, and 135I that extend in the X-axis direction.

  As shown in FIG. 10, a cyan filter 137C, which is a complementary color of red, is provided on the lens 31 side portion of each light receiving element 136C constituting the CCD 135C. As a result, the filter 137C mainly transmits blue and green light. Further, a magenta filter 137M, which is a complementary color of green, is provided on the lens 31 side portion of each light receiving element 136M constituting the CCD 135M, and the filter 137M mainly transmits red and blue light. . Furthermore, a yellow filter 137Y that is a complementary color of blue is provided in the lens 31 side portion of each light receiving element 136Y constituting the CCD 135Y, and the filter 137Y mainly transmits green and red light. .

  Therefore, in the present embodiment, the blue, red, and green diffused light that is irradiated from the light source 12 (12a to 12c) and reflected by the painting 21 is received by the CCDs 135C, 135M, and 135Y.

  Further, as shown in FIG. 10, a filter 137 </ b> I that transmits light in the infrared region is provided in a portion of each light receiving element 136 </ b> I constituting the CCD 135 </ b> I on the lens 31 side. Accordingly, each light receiving element 136I mainly detects infrared light in the same manner as the light receiving element 36I of the first embodiment.

  The acquired data storage unit 152 stores detected image data captured by the CCD camera 30 and subjected to shading correction by the correction processing unit 56. That is, the image data received by the CCD 135I and corrected by the correction processing unit 56 is received by the CCD 135M as acquired image data 152a, and the image data received by the CCD 135C and corrected by the correction processing unit 56 is received by the CCD 135M as acquired image data 152b. The image data corrected by the correction processing unit 56 is stored in the acquired data storage unit 152 as acquired image data 152c, and the image data received by the CCD 135Y and corrected by the correction processing unit 56 is stored as acquired image data 152d. . If possible, image data received by the CCDs 135C, 135M, 135Y, and 135I without shading correction may be stored as detected image data.

  The determination processing unit 157 generates diffused light image data 153 b to 153 d from the acquired image data 152 b to 152 d stored in the acquired data storage unit 152. Then, the determination processing unit 157 determines the color information of the painting 21 based on each of the generated determination image data 153b to 153d, and determines the uneven state on the surface of the painting 21 based on the regular reflection light image data 153a. The processing to be executed is executed substantially simultaneously. Note that since the regular reflection light in the infrared region is received by the CCD 135I, the acquired image data 152a and the regular reflection light image data 153a are the same image as in the first embodiment.

  FIG. 11 is a diagram illustrating an example of a state where the acquired image data 152b and the diffused light image data 153b are displayed on the display unit 41. In FIG. 11, the upper left coordinates of the acquired image data 152b and the diffused light image data 153b are the origin, the right direction toward the paper is the i-axis positive direction, and the lower direction is the j-axis positive direction. In the following description, it is assumed that each of the image data 152b to 152d and 153b to 153d has an i-axis direction data size of i0 and a j-axis direction data size of j0.

  The first generation unit 157 a of the determination processing unit 157 generates diffused light image data 153 b corresponding to blue diffused light in the color information of the painting 21. In addition, the second generation unit 157b and the third right west portion 157c generate diffused light image data 153c and 153d corresponding to red and green diffused light in the color information of the painting 21, respectively.

  Here, the density values of the acquired image data 152b to 152d and the specular reflection light image data 153b to 153d at the position (i, j) on the ij plane are set to C (i, j), M (i, j), and Y, respectively. (I, j), B (i, j), R (i, j), and G (i, j), and conversion coefficients are k11, k12, k13, k21, k22, k23, k31, k32, k33 Then, the diffused light image data 153b to 153d are obtained by Equations 1 to 3, respectively.

B (i, j) = k11 × C (i, j) + k12 × M (i, j) + k13 × Y (i, j)
R (i, j) = k21 × C (i, j) + k22 × M (i, j) + k23 × Y (i, j)
G (i, j) = k31 × C (i, j) + k32 × M (i, j) + k33 × Y (i, j) (3)
Thus, in this embodiment, as shown in FIG. 10, each of the diffused light image data 153b to 153d is generated from the diffused light P2 to P4 received by the plurality of CCDs 135 (135C, 135M, and 135Y). Can do. As a result, even when the amount of light emitted from the light source 12 is small, good diffusion is achieved by adding each of the diffused light components detected by the CCDs 135C, 135M, and 135Y according to Equations 1 to 3. Optical image data 153b to 153d can be acquired. Therefore, the color information determination process of the painting 21 can be executed with high accuracy.

<2.2. Determination procedure by determination device>
Here, it is executed by the determination apparatus 1 of the present embodiment.
(1) A procedure for storing the surface information of the painting in advance;
(2) a procedure for determining the identity between two paintings;
Will be described.

  FIG. 12 is a flowchart illustrating an example of a procedure for recording the surface information of the painting 21 by the determination apparatus 1 according to the present embodiment. In step S301, parameters (for example, shading parameters) necessary for the process are acquired from the parameter storage unit 54 (see FIG. 9) prior to the surface information storage process.

  Next, the picture 21 is imaged by the CCD camera 30 while the picture 21 is moved by the drive unit 23. Then, the detected image data simultaneously received by the CCDs 135I, 135C, 135M, and 135Y is stored in the acquired data storage unit 152 as acquired image data 152a to 152d, respectively (S302). At this time, the image data 152a to 152c may be subjected to shading correction by the correction processing unit 56 and density correction as in the first embodiment.

  In step S <b> 303, the diffused light image data 153 b to 153 d is generated by the first generation unit 157 a, the second generation unit 157 b, and the third generation unit 157 c of the determination processing unit 157 and stored in the determination data storage unit 153.

  As described above, the specular reflection light in the infrared region is received by the CCD 135I, and therefore the acquired image data 152a and the specular reflection light image data 153a are the same image. Therefore, the acquired image data 152a may be copied to the determination data storage unit 153 as the specular reflected light image data 153a, or the actual image data is not copied to the determination data storage unit 153, and the acquired image data 152a Information to be associated may be stored in the determination data storage unit 153.

  And the process which stores the surface information of the painting 21 is complete | finished by recording the regular reflection light image data 153a and the diffused light image data 153b-153d of the determination data storage part 153 in the external storage device 71 as prior surface information.

  FIG. 13 is a flowchart illustrating an example of a procedure for determining the identity between two pictures by the determination apparatus 1 according to the present embodiment. In step S401, as in step S301 of FIG. 11, parameters necessary for processing (for example, a binarization threshold value, an allowable area value of an adjacent pixel group, a shading parameter, etc.) from the parameter storage unit 54 are stored in the parameter storage unit. 54.

  Next, in step S402, as in step S302 of FIG. 11, the painting 21 is imaged by the CCD camera 30, and the detected image data thus captured is stored in the acquired data storage unit 152 as acquired image data 152a to 152d, respectively. . At this time, the image data 152a to 152c may be subjected to shading correction by the correction processing unit 56 and density correction as in the first embodiment.

  Subsequently, in step S403, similarly to step S303 in FIG. 11, each of the diffused light image data 153b to 153d is obtained by the first generation unit 157a, the second generation unit 157b, and the third generation unit 157c of the determination processing unit 157. Each is generated and stored in the determination data storage unit 153. As for the regular reflection light image data 153a, the acquired image data 152a may be copied to the determination data storage unit 153, or information associated with the acquired image data 152a may be stored in the determination data storage unit 153.

  Subsequently, steps S404 and S405 are executed substantially simultaneously. That is, based on the preliminary surface information recorded in the external storage device 71 and the immediate surface information stored in the determination data storage unit 153, the determination process of the identity of the uneven state of the surface of the painting 21 and the color information of the painting 21 The identity determination process is executed substantially simultaneously.

  And the determination result by step S404 and S405 is displayed on the display part 41, and a determination process is complete | finished (S406). That is, by comparing the prior surface information and the immediate surface information, it is determined that (1) the uneven state is the same and (2) all the color information corresponding to blue, red, and green are the same. If the determination result is “OK”, the fact that the determination result is “OK” is displayed on the display unit 41.

  On the other hand, when it is determined that even the unevenness state and one of the color information are not the same, the display unit 41 displays that the determination result is “NG”, and the prior surface information and the immediate surface information are different. The part is displayed on the display unit 41.

<2.3. Advantages of determination apparatus according to second embodiment>
As described above, the determination apparatus 1 according to the second embodiment does not require sensory evaluation that depends on the sense of the examiner, as in the first embodiment, and is quantitatively identical between the two pictures. Can be judged. In addition, the time required for the inspection process can be reduced while reducing the manufacturing cost and installation space of the determination apparatus 1.

  Furthermore, in the second embodiment, by using Equations 1 to 3, the diffused light components are extracted and diffused from each of the acquired image data 152b to 152d received by the plurality of CCDs 135 (135C, 135M, and 135Y). Each of the optical image data 153b to 153d can be generated. Therefore, even when the amount of light emitted from the light source 12 is small, good diffused light image data 153b to 153d can be acquired, and the unevenness state and drawing state of the painting 21 are accurately checked. be able to.

<3. Modification>
While the embodiments of the present invention have been described above, the present invention is not limited to the above examples.

  (1) In the first and second embodiments, the light source 12 has a structure extending in a direction substantially perpendicular to the moving direction AR1 of the painting 21, but is not limited thereto. For example, as in the determination apparatus 100 of FIG. 14, a plurality of substantially spherical light sources 112 arranged above the painting 21, that is, light sources 112a, 112b, and 112c of blue light, red light, and green light are diffused. It may be used as a light source.

  (2) In the first and second embodiments, the light sources 11 and 12 and the CCD camera 30 are fixed, and the imaging process is executed by the CCD camera 30 while the painting 21 is moved. However, the present invention is not limited to this. Instead, the image 21 may be fixed while the light source 11, 12 and the CCD camera 30 are moved with respect to the image 21. That is, the imaging process may be executed while moving the painting 21 relative to the light sources 11 and 12 and the CCD camera 30.

  (3) In the first and second embodiments, the light source 11 emits light in the infrared region. However, the present invention is not limited to this, and any light other than the visible light region may be used. . Accordingly, the light source 11 may emit ultraviolet light.

  (4) Further, in the first and second embodiments, the determination device 1 is used as a device for determining the identity of both paintings from the prior surface information and the immediate surface information, but is not limited thereto. Instead, as shown in FIGS. 7 and 12, it may be used as a surface information recording device for recording the surface information of a painting.

It is a perspective view which shows an example of the whole structure of the determination apparatus (surface information recording device) in the 1st and 2nd embodiment of this invention. It is a figure for demonstrating the light reception method of the regular reflection light and diffused light by the CCD element of the 1st Embodiment of this invention. It is a functional block diagram which shows schematic structure of the control part of the determination apparatus in the 1st Embodiment of this invention. It is a figure for demonstrating the uneven | corrugated state of the surface of a painting. It is a figure for demonstrating the acquired image data obtained by receiving the diffused light from a picture. It is a figure for demonstrating the acquired image data obtained by detecting the regular reflection light from a picture. It is a flowchart which shows an example of the recording procedure of the surface information in 1st Embodiment. It is a flowchart which shows an example of the determination procedure of the identity in 1st Embodiment. It is a functional block diagram which shows schematic structure of the control part of the determination apparatus in the 2nd Embodiment of this invention. It is a figure for demonstrating the light reception method of the regular reflection light and diffused light by the CCD element of the 2nd Embodiment of this invention. It is a figure for demonstrating the image data in an ij coordinate system. It is a flowchart which shows an example of the recording procedure of the surface information in 2nd Embodiment. It is a flowchart which shows an example of the determination procedure of the identity in 2nd Embodiment. It is a figure for demonstrating the modification of this invention.

Explanation of symbols

1, 100 determination device (surface information recording device)
11, 12 (12a to 12c), 112 (112a to 112c) Light source 15 Shield plate 16 Slit 21 Painting 22 Holding unit 23 Drive unit 30 CCD camera 35 (35R, 35G, 35B, 35I), 135 (135C, 135M, 135Y) , 135I) CCD
36 (36R, 36G, 36B, 36I), 136 (136C, 136M, 136Y, 136I) Light receiving element 37 (37R, 37G, 37B, 37I), 137 (137C, 137M, 137Y, 137I) Filter 50 Control unit 51 Memory 52, 152 Acquisition data storage unit 52a-52d, 152a-152d Acquisition image data 53, 153 Determination data storage unit 53a, 153a Regular reflection light image data 53b-53d, 153b-153d Diffuse light image data 55 CPU
57 judgment processing unit 61 shape curve 62 diffused light density distribution curve 63 specular reflected light density distribution curve 71 external storage device P1 regular reflected light P2 to P4 diffused light

Claims (11)

A determination device for determining identity between two objects based on surface information of a substantially planar object having irregularities on a surface,
(a) an irradiation unit that irradiates light to the object;
(b) a single light detection unit that acquires the surface information by detecting light emitted from the irradiation unit and reflected by the object; and
(c) a recording unit that records the surface information acquired by the single light detection unit as image data;
(d) The first surface information acquired by the single light detection unit with respect to the first object, and the second object previously detected by the single light detection unit and recorded in the recording unit A determination unit that determines identity between the first and second objects based on second surface information;
With
The irradiation unit is
(a-1) a first light source that irradiates the object with light outside a visible light region;
(a-2) a second light source that irradiates the object with visible light including the three primary colors of light;
Have
The light detection unit is
(b-1) a regular reflection light receiving unit that receives regular reflection light irradiated from the first light source and regularly reflected by the object;
(b-2) a plurality of diffused light receiving units that receive diffused light emitted from the second light source and diffusely reflected by the object substantially simultaneously with the specularly reflected light;
Have
The surface information is
First image data based on reflected light emitted from the first light source and reflected by the object;
Second image data based on diffused light emitted from the second light source and reflected by the object;
Including
The determination unit is based on the first and second surface information,
(i) From the first image data of both objects, the identity of the uneven state between the objects is determined.
(ii) the identity of the color information between the two objects from the second image data of the two objects,
A determination device characterized by determining each. The determination apparatus according to claim 1,
Each of the plurality of diffused light receiving units receives light of a corresponding color among red, blue, and green, which are components of the three primary colors of the light,
The second image data includes the three primary colors of light.
First diffused light image data based on red light;
Second diffused light image data based on blue light;
Third diffused light image data based on the green number,
Including
The determination unit
A determination apparatus characterized by determining the identity of the color information between the two objects for each of the first to third diffused light image data. The determination apparatus according to claim 1,
The determination unit
(d-1) A first diffused light image data is generated by extracting a component corresponding to red light among the three primary colors of the light from the detected image data detected by each of the plurality of diffused light receiving units. 1 generator,
(d-2) a second generation unit that extracts a component corresponding to blue light from the three primary colors of light to generate second diffused light image data;
(d-3) a third generating unit that extracts a component corresponding to green light from the three primary colors of light to generate third diffused light image data;
Including
The surface information recorded in the recording unit includes first to third diffused light image data,
The determination unit
A determination apparatus characterized by determining the identity of the color information between the two objects for each of the first to third diffused light image data. In the determination apparatus in any one of Claims 1 thru | or 3,
(e) moving means for moving the object relative to the irradiation unit and the light detection unit;
Further comprising
Each of the regular reflection light receiving unit and the plurality of diffused light receiving units includes a plurality of light receiving elements arranged in a direction substantially perpendicular to a moving direction of the moving unit. The determination apparatus according to claim 4,
The light emitted from the first light source passes through a slit extending in a direction substantially perpendicular to the moving direction of the moving means and reaches the object. In the determination apparatus according to claim 4 or 5,
The object is held in a horizontal position;
The determination means characterized in that the moving means moves the object in a horizontal direction. In the determination apparatus in any one of Claims 1 thru | or 6,
The determination apparatus, wherein the object is a painting. A surface information recording apparatus for recording surface information of a substantially planar object having irregularities on the surface,
(a) an irradiation unit that irradiates light to the object;
(b) a single light detection unit that acquires the surface information by detecting light emitted from the irradiation unit and reflected by the object; and
(c) a recording unit that records the surface information acquired by the single light detection unit as image data;
With
The irradiation unit is
(a-1) a first light source that irradiates the object with light outside a visible light region;
(a-2) a second light source that irradiates the object with visible light including the three primary colors of light;
Have
The light detection unit is
(b-1) a regular reflection light receiving unit that receives regular reflection light irradiated from the first light source and regularly reflected by the object;
(b-2) a plurality of diffused light receiving units that receive diffused light emitted from the second light source and diffusely reflected by the object substantially simultaneously with the specularly reflected light;
Have
The surface information is
First image data based on reflected light emitted from the first light source and reflected by the object;
Second image data based on diffused light emitted from the second light source and reflected by the object;
A surface information recording apparatus comprising: In the surface information recording device according to claim 8,
Each of the plurality of diffused light receiving units receives light of a corresponding color among red, blue, and green, which are components of the three primary colors of the light,
The second image data includes the three primary colors of light.
First diffused light image data based on red light;
Second diffused light image data based on blue light;
Third diffused light image data based on the green number,
A surface information recording apparatus comprising: In the surface information recording device according to claim 8,
(d) From the detected image data detected by each of the plurality of diffused light receiving units,
(d-1) a first generation unit that extracts a component corresponding to red light from the three primary colors of light to generate first diffused light image data;
(d-2) a second generation unit that extracts a component corresponding to blue light from the three primary colors of light to generate second diffused light image data;
(d-3) a third generating unit that extracts a component corresponding to green light from the three primary colors of light to generate third diffused light image data;
Further comprising a determination unit having
The surface information recording apparatus, wherein the surface information recorded in the recording unit includes first to third diffused light image data. In the surface information recording device according to any one of claims 8 to 10,
The surface information recording apparatus, wherein the object is a picture.

Images