JP2018173317A - Device and method for detecting attached document - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately determine whether there is an attached document in a container box even if the container box and the attached document are similar in the color.SOLUTION: A detector 1 detects an attached document 11 put on a contained material 13 in a container box 9. The detector 1 includes: an ultraviolet ray irradiation source 2 for emitting an ultraviolet ray; a camera 3 for taking an image of a region including the part where an attached document 11 is attached, when an ultraviolet ray is irradiated; a processor 7 for determining whether there is the attached document 11 in the container box 9 on the basis of the taken image. The contained material 13 and the attached document 11 are similar in the color, and the attached document 11 includes a fluorescent agent and thus emits fluorescence when being irradiated with an ultraviolet ray and emits light with a wavelength in a specific range. The contained material 13, on the other hand, emits light with a wavelength out of the specific range when being irradiated with an ultraviolet ray. The processor 7 specifies the part of light which has a wavelength in the specific range on the basis of the taken image and determines the presence of the attached document 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a detection apparatus and a detection method for an attached document attached in a state of being placed on a storage box in a storage box in which the storage is stored.

  2. Description of the Related Art Conventionally, when a container such as a medicine is stored in a storage box, an attached document (attachment) on which the description of the medicine is described is separately attached on the container. If you do not attach such attachments, you will not be recognized as a drug and may violate the Pharmaceutical Affairs Law. Therefore, conventionally, the detection device determines whether or not an attached document is appropriately attached to the storage box in a state where the storage object is stored in the storage box. Typically, this detection apparatus captures an image with a camera in a state in which a storage box storing a storage object is irradiated with illumination (for example, white LED illumination), and determines the presence or absence of an attached document based on the captured image.

  For example, Patent Document 1 discloses a technique related to the above-described detection apparatus. Patent Document 1 discloses an inspection apparatus for defective packaging. Specifically, this inspection apparatus irradiates the inspection target portion of the package with ultraviolet rays, and determines a packaging defect based on imaging data of scattered ultraviolet rays from the inspection target portion. In particular, this inspection apparatus applies a fold or heat seal part of a packaging film as an inspection target part, and inspects for wrinkles and creases.

Japanese Patent No. 45383361

By the way, in the attached document detection apparatus as described above, it is difficult to accurately determine the presence or absence of an attached document when, for example, the outer packaging material of the stored item and the attached document have similar colors. Specifically, when an aluminum vapor-deposited outer packaging film is applied as an outer packaging material, or when a transparent film such as a silicon oxide vapor-deposited film or an aluminum oxide vapor-deposited film is applied as an outer packaging material, the attached document and the outer packaging material are imaged by the camera. It becomes difficult to distinguish between images, and it is difficult to directly detect attached documents from captured images.
More specifically, when an aluminum vapor-deposited film is used for outer packaging, the surface exhibits a metallic color, and if the contents are in a three-dimensional form, the outer packaging surface is partially diffusely reflected, and uniform imaging information is obtained. Can't get. In general, when an aluminum vapor-deposited film is printed and displayed on the surface, the entire surface or part of the film surface is printed in white with white ink (which often contains titanium oxide). Print other designs. In this case, the attached document and the outer packaging material are white and have similar colors.
Also, in the case of a transparent vapor deposition film, similarly to the aluminum vapor deposition film, when the surface is irradiated with light, it is partially diffused or the contents are reflected, making it difficult to distinguish it from the attached document.

  Therefore, in the prior art, for example, a predetermined characteristic portion (in one example, a red print portion of the outer packaging material) in the outer packaging material is extracted from the captured image, and an attached document is detected based on the area of the characteristic portion. Specifically, when the area of the characteristic part of the outer packaging material is less than the threshold value, it is determined that the attached document exists in the storage box because the attached document is placed on the outer packaging material (non-defective product determination ), If the area of the characteristic part of the outer packaging material is greater than or equal to the threshold value, the attached document is not placed on the outer packaging material, so it was determined that the attached document does not exist in the storage box (defective product) Judgment). However, in this conventional detection method, the area of the characteristic portion of the outer packaging material in the captured image varies depending on the position of the attached document with respect to the outer packaging material, and thus the detection accuracy of the attached document cannot be ensured appropriately.

  The above-mentioned “similar colors” are close to the values of the image data obtained by processing the captured images of the outer packaging material and the attached document, and thus it is difficult to distinguish the outer packaging material and the attached document on the image. Means the color. The “similar colors” are defined by the color of the base (base) of the outer packaging material and the attached document, that is, the color of the portion excluding the printed characters.

  The present invention has been made to solve the above-described problems of the prior art, and is capable of accurately determining whether or not an attached document is present in a storage box. The purpose is to provide.

  In order to achieve the above object, the present invention provides a detection device for an attached document attached to a storage box in which the storage object is stored, and is attached to the storage box. An ultraviolet irradiation source for irradiating ultraviolet rays, an imaging device for imaging a range including a portion to which an attached document is attached in the storage box when the ultraviolet irradiation is applied by the ultraviolet irradiation source, and an image captured by the imaging device A processing device for determining whether or not the attached document is present in the storage box, wherein the stored object has an outer surface similar in color to the attached document, or the stored object has an outer surface made of a transparent film. And the attachment includes a fluorescent agent, so that when ultraviolet light is irradiated, the fluorescent material emits light having a wavelength within a predetermined range, while the container is irradiated with ultraviolet light. Light having a wavelength within a predetermined range Not issued, the processing unit identifies a portion of the light having a wavelength within a predetermined range based on the captured image, it determines whether the attachment is present in the receiving box, characterized in that.

  According to the present invention configured as described above, it is determined whether or not the attached document exists in the storage box based on the captured image when the attached document including the fluorescent agent is irradiated with ultraviolet rays. In this case, the attachment containing the fluorescent agent emits light having a relatively short wavelength (typically visible light) when irradiated with ultraviolet light, while the container contains light having a wavelength different from such wavelength. To emit. Therefore, since the wavelength of the reflected light (corresponding to the energy of light) differs between the attached document and the stored item when irradiated with ultraviolet rays, the stored item may have the same color as the attached document or a transparent film. Therefore, it is possible to clearly distinguish the contents and attached documents in the captured image. Therefore, according to the present invention, it can be accurately determined whether or not the attached document exists in the storage box.

In the present invention, preferably, the processing device performs gradation processing on the data of the captured image, and then sets a gradation within a range corresponding to a predetermined range of wavelengths to a first value and out of this range. When the binarization process is performed to set the gradation of the second value to the second value and the area of the portion having the first value is equal to or greater than a predetermined threshold in the captured image subjected to the binarization process, the attached document Is determined to exist in the storage box.
According to the present invention configured as described above, the area of the portion having the first value in the captured image after binarization processing, that is, the portion having the gradation within the range corresponding to the wavelength in the predetermined range is used. Thus, the presence / absence of an attached document in the storage box can be determined with higher accuracy, and whether or not the attached document is attached to an appropriate position in the storage box can also be determined with high accuracy.

In the present invention, preferably, a part of the contents and the attached document is covered by a flap included in the containing box, and the processing device includes a part of the attached document not covered by the flap of the containing box in the captured image. A region to be extracted is extracted, and based on the image of this region, it is determined whether or not the attached document exists in the container.
According to the present invention configured as described above, by using an area that is extracted from the captured image and includes a portion of the attached document that is not covered by the flap of the containing box, the presence or absence of the attached document in the containing box is further determined. In addition to being able to determine with high accuracy, it is also possible to accurately determine whether or not the attached document is attached to an appropriate position in the storage box.

In the present invention, preferably, the processing device extracts an area including a portion of the attached document covered by the flap of the storage box from the captured image, and the attached document is placed on the flap of the storage box based on the image of the area. It is further determined whether or not it has protruded.
According to the present invention configured as described above, by using the region including the portion of the attached document covered by the flap of the storage box extracted from the captured image, the attached document protrudes on the flap of the storage box. It is possible to accurately determine whether or not there is, in other words, whether or not the attached document is properly covered with the flap.

In the present invention, it is preferable to further include a filter that is attached to the imaging device and transmits only light having a wavelength in a range corresponding to a predetermined range and makes this light incident on the imaging device.
According to the present invention configured as above, reflected light (fluorescent light) from the attached document when irradiated with ultraviolet rays can be effectively incident on the imaging device by the optical filter. Therefore, the presence or absence of the attached document in the storage box can be determined with higher accuracy.

  In the present invention, preferably, the similar color is white.

  In the present invention, preferably, the container has an outer packaging material, and the outer packaging material does not substantially contain a fluorescent agent that emits fluorescence in response to ultraviolet rays.

In another aspect, the present invention is a detection method executed by a detection device for an attached document attached in a state of being placed on a storage box in a storage box in which the storage box is stored. A step of irradiating ultraviolet rays toward the substrate, a step of imaging a range including a portion to which the attached document is attached in the storage box when the ultraviolet rays are irradiated, and an attached document based on a captured image obtained by the imaging The container has an outer surface of a similar color to the attached document, or the container has an outer surface made of a transparent film and is attached. The document contains a fluorescent agent, so that when irradiated with ultraviolet light, it emits fluorescence and emits light having a wavelength within a predetermined range, while the containment is within the predetermined range when irradiated with ultraviolet light. Judge without emitting light with wavelength Degree is to identify the portion of light having a wavelength in a predetermined range based on the captured image, it determines whether the attachment is present in the receiving box, characterized in that.
Even according to the present invention configured as described above, it is possible to accurately determine whether there is an attached document in the containing box even if the contained item has a similar color to the attached document or a transparent film. it can.

  According to the attached document detection apparatus and detection method of the present invention, it is possible to accurately determine whether or not an attached document exists in the storage box.

1 is a schematic configuration diagram of an attachment detection apparatus according to an embodiment of the present invention. It is explanatory drawing about the detection area which the detection apparatus by embodiment of this invention uses. It is explanatory drawing about the detection method of the attached document using the detection area by embodiment of this invention. It is a flowchart which shows the detection process of the attached document by embodiment of this invention. It is an example of the captured image after the binarization process by embodiment of this invention.

  Hereinafter, an attached document detection apparatus and detection method according to embodiments of the present invention will be described with reference to the accompanying drawings.

  First, with reference to FIG. 1, the configuration of an attachment detection apparatus according to an embodiment of the present invention will be described. FIG. 1 is a schematic configuration diagram of an attachment detection apparatus according to an embodiment of the present invention.

  As shown in FIG. 1, the detection device 1 is a device that detects an attached document 11 that is attached in a state of being placed on a storage item 13 in a storage box 9. The storage box 9 is transported by a transport device such as a conveyor (not shown) (see the white arrow in FIG. 1), and the detection device 1 attaches a plurality of storage boxes 9 so transported from above. 11 are sequentially detected. For example, the storage box 9 is conveyed into a dark room (not shown) where light from the outside is blocked, and the detection device 1 detects the attached document 11 in such a dark room.

The storage box 9 is, for example, a cardboard box, and has two sets of flaps 9a and 9b. Detection is performed by the detection device 1 in a state in which the stored item 13 and the attached document 11 are covered by the pair of flaps 9a. . The container 13 is a medicine covered with an outer packaging material, and the attached document 11 is a general white paper printed matter on which a description of the medicine is printed. Since the portion appearing on the surface of the stored item 13 in the storage box 9 is an outer packaging material, the stored item 13 will be appropriately referred to as an “outer packaging material 13” below.
The attached document (attached document) 11 is a document for users, doctors, and pharmacists that describes warnings, precautions for use, item specifications, etc. of pharmaceuticals and medical devices, and is required to be attached under the Pharmaceutical Affairs Law. It has been.

  The outer packaging material 13 is an aluminum vapor deposition outer packaging whose surface is printed in white, and has the same color as the attached document 11. The attachment 11 includes a fluorescent agent (fluorescent whitening agent) that emits fluorescence in response to ultraviolet rays, while the outer packaging material 13 does not substantially include such a fluorescent agent. Specifically, in the attached document 11, the fluorescent agent is uniformly dispersed throughout. In general, white paper that is generally distributed contains the fluorescent agent as described above.

  As shown in FIG. 1, the detection device 1 is attached to an ultraviolet irradiation source (ultraviolet illumination) 2 that irradiates ultraviolet rays, a camera 3 as an imaging device, and a tip of the camera 3 as indicated by a broken line arrow A. And a processing device 7 that controls the ultraviolet irradiation source 2 and the camera 3 and processes a captured image of the camera 3.

  The ultraviolet irradiation source 2 irradiates, for example, ultraviolet rays having a wavelength of 365 nm toward the storage box 9. Specifically, the ultraviolet irradiation source 2 irradiates the storage box 9 with ultraviolet rays obliquely from above, and irradiates the entire upper surface of the storage box 9 with ultraviolet rays. When the ultraviolet rays from the ultraviolet irradiation source 2 are irradiated onto the attached document 11 in the storage box 9, the fluorescent agent in the attached document 11 reacts with the ultraviolet rays to emit fluorescence. Therefore, the ultraviolet rays from the ultraviolet irradiation source 2 become excitation energy that causes the attached document 11 to emit fluorescence. The attached document 11 reflects visible light having a relatively short wavelength when irradiated with ultraviolet rays. Specifically, the attached document 11 emits blue light (for example, a wavelength in the vicinity of 450 nm). On the other hand, the outer packaging material 13 substantially not containing a fluorescent agent does not emit such blue light when irradiated with ultraviolet rays.

  When the ultraviolet rays are irradiated from the ultraviolet irradiation source 2, the camera 3 captures an image of a range including at least a portion to which the attached document 11 is attached in the storage box 9. In this case, the lens filter 5 attached to the tip of the camera 3 transmits only light having a wavelength of, for example, 300 to 450 nm, blocks light in a low UV region and visible light having a predetermined wavelength or more, and the camera 3 The light that has passed through such a lens filter 5 enters. Thereby, the reflected light (fluorescent light, specifically blue light) from the attached document 11 when irradiated with ultraviolet rays can be selectively and effectively incident on the camera 3.

  The processing device 7 includes a CPU that interprets and executes a program, a memory such as a ROM and a RAM for storing programs and data, an input device (operation device) that receives input from a user, a display device, and the like. Typically, the processing device 7 is configured by a computer.

  In this embodiment, the processing device 7 supplies a trigger signal to the ultraviolet irradiation source 2 so that the ultraviolet irradiation source 2 instantaneously emits a pulse, and when the ultraviolet irradiation source 2 emits a pulse as such. The camera 3 is controlled so that the camera 3 captures an image (for example, the shutter speed is controlled). Further, the processing device 7 determines whether or not the attached document 11 exists in the storage box 9 based on the image captured by the camera 3. In particular, in the present embodiment, the processing device 7 processes the image picked up by the camera 3 to identify the blue light portion emitted from the attachment 11 by the ultraviolet irradiation, and the attachment 11 is placed in the storage box 9. Determine if it exists.

  As described above, when ultraviolet light is irradiated from the ultraviolet irradiation source 2, blue light is emitted from the attached document 11 containing the fluorescent agent, while blue light is emitted from the outer packaging material 13 that does not substantially contain the fluorescent agent. Is not emitted. Therefore, the processing device 7 can clearly distinguish the outer packaging material 13 and the attached document 11 in the captured image when irradiated with ultraviolet rays, and can accurately determine the presence or absence of the attached document 11 in the storage box 9.

  Next, with reference to FIG. 2, the detection area by the detection apparatus 1 in the embodiment of the present invention will be described. FIG. 2 is a plan view of the storage box 9 including the attached document 11 and the stored item 13 (the outer packaging material 13) as viewed from above.

  As shown in FIG. 2, in the present embodiment, the camera 3 of the detection apparatus 1 images a relatively wide range A0 including a portion to which the attached document 11 is attached in the storage box 9. The imaging range A0 is a range including at least the entire attached document 11 and partially including each of the set of flaps 9a of the storage box 9. Then, the processing device 7 of the detection apparatus 1 detects the attached document 11 by extracting the images in the areas A1, A2, and A3 from the imaging range A0 of the camera 3 as described above. Hereinafter, the areas A1, A2, and A3 are referred to as “first detection area A1,” “second detection area A2,” and “third detection area A3,” respectively.

  The first detection area A1 is a rectangular area including a portion between the set of flaps 9a as indicated by reference numeral 9c, specifically, a portion of the attachment 11 and the outer packaging material 13 that are not covered by the set of flaps 9a. Set to The first detection area A1 is used to determine whether or not the attached document 11 exists in the storage box 9. In addition to this, the first detection area A1 is also used to determine whether or not the attached document 11 is attached to an appropriate position in the storage box 9.

  On the other hand, the second and third detection areas A2 and A3 are each set to a rectangular range including the portion of the attached document 11 covered with the flap 9a. The second and third detection areas A2 and A3 are used to determine whether or not the attached document 11 protrudes from the flap 9a of the storage box 9. In other words, the second and third detection areas A2 and A3 are used to determine whether or not the attached document 11 is appropriately covered by the flap 9a.

  Next, a method for detecting the attached document 11 using the first to third detection areas A1 to A3 will be described with reference to FIG. FIGS. 3A to 3D show an imaging range A0 and first to third detection areas A1 to A3 similar to those shown in FIG.

  FIG. 3A is a diagram illustrating a case where the attached document 11 exists in the storage box 9 and the attached document 11 is attached to an appropriate position in the storage box 9. In this case, the entire first detection area A1 is occupied by the attached document 11, and the attached document 11 does not exist in the second and third detection areas A2 and A3. Therefore, the processing device 7 of the detection device 1 includes the attached document 11 in the storage box 9 and the attached document 11 based on the data in the first to third detection areas A1 to A3 in the captured image of the camera 3. It is possible to appropriately determine that it is attached to an appropriate position in the storage box 9. At this time, the processing device 7 makes a non-defective product determination.

  FIG. 3B is a diagram illustrating a case where the attached document 11 does not exist in the storage box 9. In this case, the entire first detection area A1 is occupied by the outer packaging material 13. Therefore, the processing device 7 of the detection device 1 can appropriately determine that the attached document 11 does not exist in the storage box 9 based on the data in the first detection area A1 in the captured image of the camera 3. At this time, the processing device 7 makes a defective product determination.

  FIG. 3C is a diagram illustrating a case where the attached document 11 exists in the storage box 9 but the attached document 11 is not attached to an appropriate position in the storage box 9. In this case, most of the first detection area A1 is occupied by the outer packaging material 13, and the attached document 11 exists only in a small part of the first detection area A1. Therefore, the processing device 7 of the detection device 1 appropriately determines that the attachment 11 is not attached to an appropriate position in the storage box 9 based on the data in the first detection area A1 in the captured image of the camera 3. can do. At this time, the processing device 7 makes a defective product determination.

  FIG. 3D is a diagram showing a case where the attached document 11 exists in the storage box 9 but the attached document 11 protrudes from the flap 9 a of the storage box 9. In this case, the entire first detection area A1 is occupied by the attached document 11, but the attached document 11 exists in the second detection area A2. Therefore, the processing device 7 of the detection device 1 has the attachment 11 in the storage box 9 based on the data in the first detection area A1 and the second detection area A2 in the captured image of the camera 3, but the attachment 11 Can be appropriately determined to protrude from the flap 9a of the storage box 9. At this time, the processing device 7 makes a defective product determination.

  Next, with reference to FIG. 4, the specific process which the processing apparatus 7 of the detection apparatus 1 performs in embodiment of this invention is demonstrated. FIG. 4 is a flowchart showing a process for detecting the attached document 11 according to the embodiment of the present invention. This flow is repeatedly executed by the processing device 7.

  First, in step S <b> 1, the processing device 7 controls to irradiate ultraviolet rays from the ultraviolet irradiation source 2. Specifically, the processing device 7 supplies a trigger signal to the ultraviolet irradiation source 2 when the container 9 to be detected is transported to a predetermined position, and instantaneously causes the ultraviolet irradiation source 2 to emit light in pulses.

  Next, in step S <b> 2, the processing device 7 controls the camera 3 to perform imaging when the ultraviolet irradiation source 2 emits ultraviolet rays. At this time, the processing device 7 controls, for example, the shutter speed of the camera 3.

  Next, in step S3, the processing device 7 first performs gradation processing on the image captured by the camera 3, and then sets the gradation within the predetermined range to 1 and sets the gradation outside the predetermined range to 0. The binarization process is performed. Specifically, the processing device 7 divides the image data into 256 gradations using a gray processing method as gradation processing. Thereby, the data of the captured image becomes data having a value of 0 to 255.

  After this gradation processing, the processing device 7 sets data in the range of 38 to 75, for example, to 1 (white) for the data in the first detection area A1 of the captured image, and the gradation is in the range. A binarization process for setting the outside data to 0 (black) is performed. The gradation range applied to such binarization processing includes the gradation of the captured image corresponding to the reflected light of the attached document 11 (that is, the fluorescent light, specifically blue light) by the ultraviolet irradiation. And a range in which the gradation of the captured image corresponding to the outer packaging material 13 is not included is used. In particular, when the attached document 11 does not exist, even when scattered ultraviolet rays are generated from the outer packaging material 13 by ultraviolet irradiation, the gradation range in which the data of the captured image after binarization processing is 0 (black) Should be used.

  Further, for the data in the second and third detection areas A2 and A3 of the captured image, the processing device 7 sets 1 (white) of data in a gradation range of 36 to 255, for example, and the gradation is in the range. A binarization process for setting the outside data to 0 (black) is performed. The gradation range applied to such binarization processing includes the gradation of the captured image corresponding to the reflected light of the attached document 11 (that is, the fluorescent light, specifically blue light) by the ultraviolet irradiation. And a range in which the gradation of the captured image corresponding to the flap 9a of the storage box 9 is not included is used.

  Next, in step S4, the processing device 7 determines whether or not the area of the portion set to 1 by the binarization process in the first detection area A1, that is, the area of the white portion is equal to or greater than the first threshold value. To do. In this step S4, the processing device 7 determines whether or not the attached document 11 exists in the storage box 9 based on the size of the white portion in the first detection area A1, and the attached document 11 is stored in the storage box 9. It is determined whether or not it is attached at an appropriate position. For example, 17000 is applied to the first threshold.

  As a result of the determination in step S4, when the area of the white portion in the first detection area A1 is equal to or larger than the first threshold (step S4: Yes), the processing device 7 has the attached document 11 in the storage box 9, Further, it is determined that the attached document 11 is attached to an appropriate position in the storage box 9. Then, the processing device 7 proceeds to step S5. On the other hand, when the area of the white portion in the first detection area A1 is less than the first threshold value (step S4: No), the processing device 7 indicates that the attached document 11 is not present in the storage box 9 or is attached. Even if the document 11 exists in the storage box 9, it is determined that the attached document 11 is not attached to an appropriate position in the storage box 9. In this case, the processing device 7 proceeds to step S7 to make a defective product determination.

  Next, in step S5, the processing device 7 has the area of the portion set to 1 by the binarization processing in the second and third detection areas A2 and A3, that is, the area of the white portion is less than the second threshold value. It is determined whether or not. In this step S5, the processing device 7 determines whether or not the attached document 11 protrudes from the flap 9a of the storage box 9 based on the size of the area of the white portion in the second and third detection areas A2 and A3. Determine. For example, 1000 is applied to the second threshold.

  As a result of the determination in step S5, when both the areas of the white portions in the second detection area A2 and the third detection area A3 are less than the second threshold (step S5: Yes), the processing device 7 indicates that the attached document 11 is It determines with not protruding on the flap 9a of the storage box 9. FIG. In this case, the processing device 7 proceeds to step S6 and makes a non-defective product determination. On the other hand, when at least one of the areas of the white portions in the second detection area A2 and the third detection area A3 is equal to or larger than the second threshold (step S5: No), the processing apparatus 7 has the attached document 11 as the storage box. Nine flaps 9a are determined to protrude. In this case, the processing device 7 proceeds to step S7 to make a defective product determination.

  In the flow shown in FIG. 4, the determination in step S4 and the determination in step S5 are performed separately, but the determination in step S4 and the determination in step S5 may be performed together. That is, it is determined whether the area of the white portion of the first detection area A1 is equal to or greater than the first threshold value, and whether the area of the white portion in the second and third detection areas A2, A3 is less than the second threshold value. The determination of whether or not may be performed simultaneously. In that case, when the area of the white portion of the first detection area A1 is equal to or greater than the first threshold and the area of the white portion within the second and third detection areas A2 and A3 is less than the second threshold, the processing device 7 Make a good product judgment. On the other hand, when the area of the white portion of the first detection area A1 is less than the first threshold, or when the area of the white portion in the second and third detection areas A2 and A3 is greater than or equal to the second threshold. The device 7 makes a defective product determination.

  Next, an example of a captured image after the above binarization process will be described with reference to FIG. FIGS. 5A to 5D show captured images after binarization processing in ranges including the first to third detection areas A1 to A3, respectively. In FIGS. 5A to 5D, the range of the first to third detection areas A1 to A3 is indicated by a white frame for convenience of explanation.

In the captured image after the binarization process shown in FIG. 5A, most of the first detection area A1 is white, and almost the entire second and third detection areas A2, A3 are black. Yes. In this case, since the processing unit 7 has the area of the white portion in the first detection area A1 equal to or greater than the first threshold value, the attached document 11 exists in the storage box 9 and the attached document 11 exists in the storage box 9. It is determined that it is attached at an appropriate position. In addition, since the processing device 7 has both white areas in the second detection area A2 and the third detection area A3 that are less than the second threshold value, the attached document 11 protrudes from the flap 9a of the storage box 9. Judge that there is no. Therefore, the processing device 7 makes a non-defective product determination.
In the captured image after the binarization process shown in FIG. 5A, the black portion in the first detection area A1 corresponds to the character printed on the attached document 11.

  In the captured image after the binarization process shown in FIG. 5B, the entire first detection area A1 is black. In this case, the processing device 7 determines that the attached document 11 does not exist in the storage box 9 because the area of the white portion in the first detection area A1 is less than the first threshold value. Therefore, the processing device 7 makes a defective product determination.

  In the captured image after the binarization process shown in FIG. 5C, most of the first detection area A1 is black, and only a small part of the first detection area A1 is white. In this case, since the area of the white portion in the first detection area A1 is less than the first threshold, the processing device 7 determines that the attached document 11 is not attached to an appropriate position in the storage box 9. Therefore, the processing device 7 makes a defective product determination.

  In the captured image after the binarization processing shown in FIG. 5D, most of the first detection area A1 is white, but almost the entire second detection area A2 is white. In this case, the processing device 7 determines that the attached document 11 protrudes from the flap 9a of the storage box 9 because the area of the white portion in the second detection area A2 is equal to or larger than the second threshold value. Therefore, the processing device 7 makes a defective product determination.

  As described above, in the detection device 1 according to the embodiment of the present invention, whether or not the attachment 11 exists in the storage box 9 based on the captured image when the attachment 11 including the fluorescent agent is irradiated with ultraviolet rays. Determine. In this case, when the ultraviolet ray is irradiated, the attached document 11 including the fluorescent agent emits light having a relatively short wavelength (blue light), while the outer packaging material 13 emits light having a wavelength different from such a wavelength. . Therefore, since the wavelength of reflected light (corresponding to the energy of light) is different between the attached document 11 and the outer packaging material 13 when the ultraviolet rays are irradiated, even if the attached document 11 and the outer packaging material 13 have similar colors, imaging is performed. The outer packaging material 13 and the attached document 11 in the image can be clearly distinguished. Therefore, according to the present embodiment, it can be accurately determined whether or not the attached document 11 exists in the storage box 9.

  In addition, the detection apparatus 1 according to the embodiment of the present invention performs binarization processing for setting the gradation within the predetermined range to 1 and setting the gradation outside the predetermined range to 0 for the captured image data. Thus, the area of the portion set to 1 in the captured image after the binarization processing is used. Accordingly, the presence / absence of the attached document 11 in the storage box 9 can be determined more accurately based on the size of the area, and whether the attached document 11 is attached to an appropriate position in the storage box 9 or not. Moreover, it can be determined with high accuracy.

  Moreover, in the detection apparatus 1 by embodiment of this invention, 1st detection area A1 in which the part of the attached document 11 which is not covered with the flap 9a of the storage box 9 is contained in a captured image is used. Thereby, the presence or absence of the attached document 11 in the storage box 9 can be determined with higher accuracy, and whether or not the attached document 11 is attached to an appropriate position in the storage box 9 can also be determined with high accuracy. .

  Moreover, in the detection apparatus 1 by embodiment of this invention, 2nd and 3rd detection area A2, A3 in which the part of the attached document 11 covered with the flap 9a of the storage box 9 is contained in a captured image is used. Thereby, it is possible to accurately determine whether or not the attached document 11 protrudes from the flap 9a of the storage box 9.

  In addition, according to the detection device 1 according to the embodiment of the present invention, since the lens filter 5 that transmits only light having a wavelength in a predetermined range and makes this light incident on the camera 3 is used, it is attached when irradiated with ultraviolet rays. Reflected light (fluorescent light, specifically blue light) from the document 11 can be effectively incident on the camera 3. Therefore, the presence or absence of the attached document 11 in the storage box 9 can be determined with higher accuracy.

  In the above-described embodiment, the outer packaging material 13 including the aluminum vapor deposition film (aluminum vapor deposition outer packaging) and having the same color as the attached document 11 is shown. However, the present invention is applicable to such an outer packaging material 13. There is no limitation. In another example, the present invention can be applied to an outer packaging material using a transparent film such as a silicon oxide vapor deposition film or an aluminum oxide vapor deposition film. Even when such an outer packaging material is used, according to the present invention, it can be accurately determined whether or not the attached document 11 exists in the storage box 9.

DESCRIPTION OF SYMBOLS 1 Detection apparatus 2 Ultraviolet irradiation source 3 Camera (imaging apparatus)
5 Lens Filter 7 Processing Device 9 Storage Box 11 Attached Document 13 Contained Goods (Outer Packaging Material)

Claims (8)

A detection device for an attached document attached in a state of being placed on the storage in a storage box in which the storage is stored,
An ultraviolet irradiation source for irradiating ultraviolet rays toward the storage box;
An imaging device for imaging a range including a portion to which the attached document is attached in the storage box when the ultraviolet ray is irradiated by the ultraviolet irradiation source;
A processing device for determining whether the attached document is present in the storage box based on an image captured by the imaging device;
The container has an outer surface similar in color to the attached document, or the container has an outer surface made of a transparent film;
The attachment includes a fluorescent agent, whereby when the ultraviolet light is irradiated, the fluorescent light emits and emits light having a wavelength within a predetermined range, while the container contains the fluorescent material when the ultraviolet light is irradiated. Does not emit light having a wavelength within a predetermined range,
The processing device identifies a portion of light having a wavelength within the predetermined range based on the captured image, and determines whether the attachment is present in the storage box.
A detection device characterized by that. The processor is
The captured image data is subjected to gradation processing, and thereafter, the gradation within the range corresponding to the wavelength in the predetermined range is set to the first value, and the gradation outside the range is set to the second value. Perform binarization processing to set,
When the area of the portion having the first value in the captured image subjected to the binarization process is equal to or larger than a predetermined threshold, it is determined that the attached document exists in the storage box.
The detection device according to claim 1. A part of the container and the attached document is covered with a flap of the container box,
The processing apparatus extracts an area including a portion of the attached document that is not covered by a flap of the storage box in the captured image, and the attached document exists in the storage box based on the image of the area. Determine whether or not to
The detection device according to claim 1 or 2. The processing apparatus extracts an area including a portion of the attached document covered by the flap of the storage box in the captured image, and the attached document is placed on the flap of the storage box based on the image of the area. Determine further whether or not it protrudes,
The detection device according to claim 3.   5. The filter according to claim 1, further comprising a filter that is attached to the imaging device and transmits only light having a wavelength in a range corresponding to the predetermined range and causes the light to enter the imaging device. The detection device according to item.   The detection apparatus according to claim 1, wherein the similar color is white.   The detection apparatus according to claim 1, wherein the container includes an outer packaging material, and the outer packaging material does not substantially include a fluorescent agent that emits fluorescence in response to ultraviolet light. A method for detecting an attached document attached in a state of being placed on the storage in a storage box in which the storage is stored,
Irradiating ultraviolet rays toward the storage box;
Imaging a range including a portion to which the attached document is attached in the storage box when the ultraviolet ray is irradiated;
Determining whether the attached document exists in the storage box based on a captured image obtained by the imaging, and
The container has an outer surface similar in color to the attached document, or the container has an outer surface made of a transparent film;
The attachment includes a fluorescent agent, whereby when the ultraviolet light is irradiated, the fluorescent light emits and emits light having a wavelength within a predetermined range, while the container contains the fluorescent material when the ultraviolet light is irradiated. Does not emit light having a wavelength within a predetermined range,
The determining step specifies a portion of light having the wavelength in the predetermined range based on the captured image, and determines whether or not the attached document exists in the storage box.
A detection method characterized by the above.

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