WO2016200039A1 - 카메라 및 이를 이용한 물품 처리 장치 - Google Patents
카메라 및 이를 이용한 물품 처리 장치 Download PDFInfo
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- WO2016200039A1 WO2016200039A1 PCT/KR2016/003832 KR2016003832W WO2016200039A1 WO 2016200039 A1 WO2016200039 A1 WO 2016200039A1 KR 2016003832 W KR2016003832 W KR 2016003832W WO 2016200039 A1 WO2016200039 A1 WO 2016200039A1
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- Prior art keywords
- mirror
- camera
- article
- sensor
- lens
- Prior art date
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/19—Recognition using electronic means
- G06V30/191—Design or setup of recognition systems or techniques; Extraction of features in feature space; Clustering techniques; Blind source separation
- G06V30/19173—Classification techniques
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
- G03B3/10—Power-operated focusing
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B39/00—High-speed photography
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/24—Classification techniques
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10712—Fixed beam scanning
- G06K7/10722—Photodetector array or CCD scanning
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/141—Control of illumination
Definitions
- the present invention relates to a camera technology for photographing an object moving at high speed.
- a line scan camera or an area scan camera is used to photograph a moving object. For example, after illuminating an article to photograph an object moving through a moving table such as a conveyor belt, image data is obtained by detecting light reflected from the article by a line scan camera or an area scan camera.
- Image acquisition technology using line scan cameras or area scan cameras can be applied to logistics, factory automation (FA), and inspection processes depending on the application. There are many applications such as defect inspection. However, even when an object moves at a high speed, a high speed focusing capability is required in a line scan camera or an area scan camera to obtain a high quality image.
- a camera and an article processing apparatus using the same which are capable of automatically and quickly focusing on articles moving at high speed to obtain an image at a high speed, are provided.
- the camera includes a lens for condensing and transmitting light received from a moving article, a mirror for reflecting light transmitted from the lens, and a sensor for receiving and converting light reflected from the mirror into an image signal.
- a lens for condensing and transmitting light received from a moving article
- a mirror for reflecting light transmitted from the lens
- a sensor for receiving and converting light reflected from the mirror into an image signal.
- Each of the objects is focused by adjusting the beam distance between the lens and the sensor by moving the mirror installed to be movable between the fixed lens and the sensor.
- the mirror is moved to increase or decrease the beam distance between the lens and the sensor so as to focus corresponding to the distance between the article and the camera according to the height or volume of each article when photographing articles having different heights or volumes.
- one end of the mirror is fixed by the mirror axis, and the other end of the mirror is connected to the motor, so that the other end of the mirror is moved by the motor about the mirror axis.
- the camera further includes a joint connecting the one end of the mirror and the mirror axis or connecting the other end of the mirror and the motor, the mirror may move the joint as the axis of rotation.
- the mirror includes a first mirror reflecting light transmitted through the lens, and a second mirror reflecting light reflected through the first mirror to the sensor, the first mirror and the second mirror
- the mirror is a moving form.
- the camera according to an embodiment further includes an elastic member that prevents play of the mirror or play on the rotation axis.
- the camera may further include a motor to move the mirror to focus.
- a camera for condensing and transmitting light received from a fixed and moving article and one end is fixed by the sensor axis and the other end is moved around the fixed end.
- the sensor includes a sensor that focuses by adjusting a distance of light with a lens and converts light transmitted through the lens into an image signal.
- the camera may further include a motor to move the sensor to focus.
- an article processing apparatus includes a camera that focuses and photographs each moving article by adjusting a beam distance between a lens and a sensor by moving a mirror or moving one end of the sensor without the mirror; And a motor for moving the mirror or sensor to focus on the camera, a measuring unit for measuring the size including the height or volume of the article, and a motor for driving the motor based on the size of the article measured through the measuring unit. It includes a control unit.
- the camera may focus by adjusting the beam distance between the lens and the sensor through the movement of the mirror installed to be movable between the fixed lens and the sensor, respectively.
- the light beam distance with the lens may be adjusted to focus.
- control unit calculates a moving value for moving the mirror between the fixed lens and the sensor according to the distance between the photographing surface of the article and the camera from the size of the article measured by the measuring unit, or the lens without the mirror.
- the sensor calculates the movement value that the sensor should move, and transmits a control signal for movement to the motor according to the calculation result.
- the camera acquires a barcode or address information of an article as an image.
- the article processing apparatus further includes a recognizer that reads identifier information or address information of an article represented by a barcode or a character from the photographed image.
- the article processing apparatus further includes a communication unit configured to transmit and receive data with a management server that manages article information and article classification information, and the communicator manages identifier information or address information of the article obtained through the recognition unit from the acquired image. It transmits to the server and receives the product classification information obtained by the management server retrieves the identifier information or address information of the goods from the management server, and the control unit classifies the goods using the received article classification information.
- each article moving at a high speed can be focused at a high speed according to the speed.
- the focusing method is simpler and simpler than moving the entire sensor by fixing the sensor, moving the mirror, or moving only one end of the sensor. Fixing one end of the mirror or sensor and moving only the other end makes it easy to adjust the distance between the lens and the sensor center, especially in line scan cameras.
- the above-described focus adjustment technique can be applied to article classification techniques to automatically classify articles.
- the productivity can be improved by shortening the working time while increasing the accuracy, and the installation space can be reduced by simplifying the configuration of the device.
- FIG. 1 is a block diagram of a camera focusing using a mirror according to an embodiment of the present invention
- FIG. 2 is a reference diagram illustrating an example of focusing a camera by moving a mirror according to an embodiment of the present disclosure
- FIG. 3 is a reference diagram illustrating an example of focusing a camera by using a joint when a mirror axis is far, according to an embodiment of the present disclosure
- FIG. 4 is a configuration diagram of a camera focusing using a plurality of mirrors according to an embodiment of the present invention
- FIG. 5 is an external view of the camera of FIG. 1 according to an embodiment of the present disclosure
- FIG. 6 is a configuration diagram of a camera according to another embodiment of the present invention.
- FIG. 7 is a reference diagram for explaining a principle of focusing a camera through movement of one end of a sensor according to one embodiment of the present invention
- FIG. 8 is a block diagram of an article processing system according to an embodiment of the present invention.
- FIG. 9 is an external view of an article processing apparatus according to an embodiment of the present invention.
- FIG. 10 is a flowchart illustrating an article processing method according to an exemplary embodiment.
- FIG. 1 is a block diagram of a camera focusing using a mirror according to an embodiment of the present invention.
- the camera 10 includes a lens 100, a sensor 102, and a mirror 104.
- the camera 10 photographs the article to obtain an image of the article.
- the article is a moving object, for example an object moving through a mobile platform such as a conveyor belt.
- the camera 10 is in a fixed position, each of the items passing on the moving table is photographed.
- the article may be an object moving at high speed, for example at a speed of 1-4 m per second.
- the items may have different sizes such as height or volume.
- the distance between the photographing surface of the article and the camera 10 is different for each article. Accordingly, when the camera 10 photographs articles having different heights or volumes, the camera 10 should focus at a high speed corresponding to the distance between the article and the camera 10 according to the height or volume of each article.
- the photographing surface of the camera 10 may be an upper surface, left, right side, front, or rear surface of the article.
- the lens 100 constituting the camera 10 collects and transmits light incident from an article.
- the sensor 102 obtains an image by converting light received through the lens 100 into an image signal.
- the mirror 104 is positioned between the lens 100 and the sensor 102 to reflect light transmitted from the lens 100 to the sensor 102.
- the position of the mirror 104 between the lens 100 and the sensor 102 means that the mirror 104 is physically located in the light path through which the light ray passes between the lens 100 and the sensor 102.
- the camera 10 is installed at a position where the lens 100 and the sensor 102 are fixed, and the mirror 104 has a lens such that the distance between the lens 100 and the sensor 102 increases or decreases. It is installed to be movable between the 100 and the sensor (102). The movement of the mirror 104 such that the light beam distance between the lens 100 and the sensor 102 increases or decreases corresponds to the distance between the camera 10 and the article photographing surface that varies with the height or volume of each article. ) To focus.
- the lens 100 is heavy and physical defects such as wear may occur when the lens 100 is rotated to focus, and is not particularly suitable for adjusting the focus at high speed.
- the camera 10 since a cable for signal transmission is connected, it is not easy to move the sensor 102 to focus. Accordingly, the camera 10 according to an embodiment may easily fix the lens 100 and the sensor 102 by moving the mirror 104 installed to be movable between the lens 100 and the sensor 102. Focus the camera 10. In particular, it is suitable for focusing on objects moving at high speed.
- the camera 10 is a line scan camera.
- the line scan camera may be in contact form or in a non-contact form such as a remote or near field scanner, where the camera 10 corresponds to a contactless form.
- the sensor 102 of the line scan camera is a line sensor having a sensing area in the form of a long line.
- a line scan camera scans each article in line form using a line sensor.
- the position of the sensor must be changed to focus.
- the sensor must be tilted at an angle with the mirror.
- the sensing area above or below the sensing area of the sensor center is out of focus.
- the camera 10 is preferably a line scan camera to focus using the movement of the mirror 104.
- the camera may be an area scan camera as well as a line scan camera. An embodiment thereof will be described later with reference to FIG. 4.
- FIG. 2 is a reference diagram illustrating an example of focusing a camera by moving a mirror according to an embodiment of the present disclosure.
- the camera 10 moves the other end of the mirror 104 about the mirror axis 200 while the one end of the mirror 104 is fixed by the mirror axis 200. Focus. Both ends of the mirror 104 each include up to its extension.
- one end of the mirror 104 means a point where the extension line of the mirror 104 and the mirror axis 200 meet.
- the position of the mirror axis 200 can be the point where the position of the article changes to a minimum, assuming that the mirror 104 moves at both ends of the mirror 104.
- the mirror 104 focuses the camera 10 by adjusting the length of the light beam between the lens 100 and the sensor 102. For example, when photographing the top of an article, the mirror 104 focuses according to the height of each article. In this case, when the height of the article is increased, the sensor 102 may be moved backward, but the sensor 102 is fixed, and thus the mirror 104 is moved to the rear so that the light beam distance is long. In contrast, when the height of the article is lowered, the focus is achieved by moving the mirror 104 forward to shorten the beam distance.
- the beam distance between the sensor 102 and the mirror 104 is 110 and the beam distance between the mirror 104 and the sensor 102 is Assume 90.
- the wide angle between the lens 100 and the sensor 102 is narrowed from 90 degrees to 83.66 degrees.
- the embodiment described with reference to FIG. 2 is not limited thereto since it is an example to help understanding of the present invention.
- FIG. 3 is a reference diagram illustrating an example of focusing a camera by using a joint when the mirror axis is far from according to an embodiment of the present invention.
- the joint 300 when the mirror axis 200 is far away, the joint 300 is used.
- a joint 300 is disposed between the mirror axis 200 and one end of the mirror 104, between the other end of the mirror 104 and the motor that moves the mirror 104.
- the upper portion of the mirror 104 rotates about the joint 300, and the lower portion of the mirror 104 is connected to a motor to perform a linear movement from side to side.
- an additional joint 108 is placed at the bottom of the mirror 104 as shown in FIG. 5 to enable linear movement of the motor. Can be included.
- Camera 10 includes an elastic member for preventing the play of the mirror 104 shake or rotation axis.
- the elastic member has a restoring force, for example like a spring.
- a restoring force for example like a spring.
- the elastic member prevents play in the axis of rotation or rotation of the mirror 104 by the pulling or pushing of the mirror 104 in any one direction. Accordingly, the focal length control accuracy of the camera 10 can be increased.
- the principle of focusing the camera 10 with reference to FIG. 3 is to focus by adjusting the beam distance between the lens 100 and the sensor 102 using the mirror 104 described above with reference to FIG. Since the same principle as the fitting, detailed description is omitted.
- FIG. 4 is a configuration diagram of a camera focusing using a plurality of mirrors according to an exemplary embodiment.
- FIG. 4 there may be a plurality of moving mirrors, for example, two first mirrors 104-1 and two second mirrors 104-2 as shown in FIG. 4.
- the first mirror 104-1 reflects light transmitted through the lens 100.
- the second mirror 104-2 reflects the light reflected through the first mirror 104-1 and transmits the light back to the sensor 102.
- the first mirror 104-1 and the second mirror 104-2 focus the camera 40 through movement.
- the first mirror 104-1 and the second mirror 104-2 may move simultaneously.
- the camera 40 can focus not only in the case of a line scan camera using a line sensor, but also in the case of an area scan camera using an area sensor.
- the second mirror 104-2 is the first mirror.
- the second mirror 104-2 is the first mirror.
- light is transmitted to the sensor 102.
- the second mirror 104-2 is used, light is incident on the sensor 102 perpendicularly (90 degrees), so that not only a line scan camera but also an area scan camera can be applied.
- FIG. 5 is an external view of the camera of FIG. 1 according to an exemplary embodiment.
- the camera 10 includes a lens 100, a sensor 102, and a mirror 104, which are supported by the mirror support 106 and have an extension line.
- the mirror 104 is fixed at one end by the mirror axis 200 and the opposite end of the mirror 104 is connected to the motor 84.
- the motor 84 may be a linear motor that linearly moves back and forth as shown in FIG. 5.
- the mirror 104 moves the opposite end of the mirror 104 about the mirror axis 200.
- a joint for connecting one end of the mirror and the mirror axis or connecting the other end of the mirror and the motor 84 may be provided. For example, as shown in FIG.
- joints 108 and 109 may be provided between the mirror support 106 and the motor 84. At this time, the lower joints 108 and 109 connect the linear motion of the motor 84 connected to the mirror axis 200 and the mirror 104 lower surface of the mirror 104.
- the camera includes an elastic member that prevents the shaking of the mirror 104 or the play on the axis of rotation.
- the elastic member having a restoring force such as a spring
- the elastic member may prevent the mirror 104 from shaking by pulling or pushing the mirror 104 in either direction. This can increase the accuracy of the camera.
- FIG. 6 is a block diagram of a camera according to another embodiment of the present invention.
- the camera 60 may be focused without using the mirror described above with reference to FIG. 1.
- One end of the sensor 102 for example, the lower end is fixed to the sensor axis 600, as shown in Figure 6, the opposite end of the sensor 102 about the fixed sensor axis 600 To focus the camera 60.
- the entirety of the sensor 102 can be focused more easily than it moves.
- the overall volume of the camera 60 can be reduced.
- FIG. 7 is a reference diagram for explaining a principle of focusing a camera through movement of one end of a sensor according to an exemplary embodiment.
- the sensing area of the sensor 102 of FIG. 6 when the sensing area of the sensor 102 of FIG. 6 is viewed in two dimensions, the sensing area corresponds to a reference numeral 700, and the remaining area is not a sensing area. Even though the other side is tilted about the sensor axis 600 to focus the sensor 102, the sensing area 700 is at the same beam distance between the lens 100 and the sensor 102. Even if the focus distance is different between the lens 100 and the sensor 102 because the beam distance between the lens 100 and the sensor 102 is not focused, only the sensing area 700 needs to be focused, so there is no problem in focusing.
- FIG. 8 is a block diagram of an article processing system according to an embodiment of the present invention.
- the focusing technique of the camera described above with reference to FIGS. 1-7 may be applied to the article processing system of FIG. 8.
- the processing includes item registration, reception, classification, storage, inspection, and the like.
- article classification technique will be described later, but article processing is not limited to article classification.
- the items may be objects for inspection and may be postal items such as parcels, couriers, or the like for transmission.
- the article will be described later with the main focus on the postal matter, but the kind of the article is not limited to the postal matter.
- the mail classification process of the article processing system will be described.
- a barcode is printed or attached to the mail, and the mail identifier information (ID) is recorded on the barcode.
- the mail identifier information is a code including a series of numbers such as an invoice number and a reception number uniquely assigned to a mail for mail management when the mail is received.
- the postal matter identifier information of the barcode is stored in the management server 2 and used as an identifier for tracking or referring to the postal matter.
- the sender information and the receiver information input from the sender at the time of mail reception are matched with the item identifier information and stored in the management server 2.
- Sender and recipient information includes name, address and postal code.
- the item handling system automatically passes the conveyor belt to the received mail items and automatically sorts each mail item by recipient.
- the bar code or address information of the mail is obtained as an image through the camera 80 and the mail is automatically classified using the obtained image data. Automatically sorted mail is delivered to the appropriate recipient through the courier.
- the process of automatically classifying mails using a barcode image will be described in more detail.
- the identifier information of the mail item indicated on the barcode is read, and the identifier information of the read mail item is managed.
- the management server 2 retrieves the address information for the mail item having the mail item identifier information.
- the address information is pre-stored information that is matched with the mail identifier information at the time of mail reception and includes a recipient address and a postal code. Since the management server 2 stores the mail classification information on how to classify mail according to the recipient's address, for example, the postal code of the recipient, the management server 2 stores the mail classification information matching the recipient address. It retrieves and transmits it to the goods processing apparatus 1.
- the article processing apparatus 1 receives the mail classification information and automatically classifies the mail according to the mail classification information. For example, mails to be sent to Gwangju are classified as 1st box and mails to Daejeon are classified as 2nd box. The sorted mail will then be delivered to the area through the courier.
- the article processing apparatus 1 when the article processing apparatus 1 automatically classifies the postal matter using the photographed recipient address, the postal matter identification process when using the barcode is omitted.
- the article processing apparatus 1 transmits the receiver address photographed through the camera 80 to the management server 2.
- the management server 2 retrieves the mail classification information matching the recipient address and transmits it to the article processing apparatus 1.
- the article processing apparatus 1 receives the mail classification information and automatically classifies the mail according to the mail classification information.
- the article processing apparatus 1 includes a camera 80, an illumination unit 81, a reflector 82, a measurement unit 83, a communication unit 86, an input / output unit 87, a control unit 88, and the like. Recognizing unit 89, the camera 80 may further include a motor (84).
- the camera 80 has the structure described above with reference to FIG. 1. That is, the camera 80 includes a lens, a sensor, a mirror, and a motor 84. Each of the cameras moves a mirror between a fixedly installed lens and a sensor to adjust and focus a beam distance between the lens and the sensor for each object. .
- the camera 80 has the structure described above with reference to FIG. 6. That is, the camera 80 includes a lens, a sensor, and a motor 84 without a mirror, and moves the other end about the fixed one end of the sensor to adjust the light distance between the lens and the sensor for each object. Adjust to focus. In this case, the movement of the sensor may be made by driving the motor 84.
- the lighting unit 81 irradiates light to the article using illumination.
- the reflector 82 reflects the light irradiated from the illumination unit 81 onto the article.
- the lighting unit 81 may include a light emitting device such as an LED or a light bulb.
- the camera 80 receives the light reflected from the article and photoelectrically converts it to obtain an image of the article.
- the camera 80 may be a single dog, or a plurality of cameras 80. In this case, an image may be acquired for an article at different locations.
- the measuring unit 83 measures the size of the article including the height or volume of the article before the camera 80 photographs the article.
- the measuring unit 83 measures the size of the article through various methods.
- the measuring unit 83 may be a contact sensor that obtains size information by contacting the article.
- the measuring unit 83 may be an optical displacement sensor that irradiates an optical signal to an article and acquires size information of the corresponding article by using a reflected signal.
- the measuring unit 83 may be an image sensor that acquires an image of an article and obtains size information of the article using the obtained image. If necessary, the measuring unit 83 may measure not only the size of the article but also the weight of the article.
- the control unit 88 controls the entire article processing apparatus 1.
- the controller 88 processes an image captured by the camera 80 and performs physical control of each component.
- the controller 88 outputs the article processing result and controls the input / output unit 87 capable of receiving input of various settings and commands from the processor.
- the controller 88 drives the motor 84. In the case of using the mirror to focus, the mirror is moved through the motor 84, and in the case of using the sensor, the sensor is moved through the motor 84.
- the controller 88 may move a mirror to move the mirror between the fixed lens and the sensor according to distance information between the camera and the photographing surface of the article from the size of the article measured by the measuring unit 83. And transmits a control signal for moving the mirror to the motor 84 according to the operation result.
- the controller 88 moves one end of the sensor without a mirror, the sensor should move according to the distance information between the camera and the photographing surface of the article from the size of the article measured by the measuring unit 83.
- the movement value is calculated and a control signal for moving the sensor is transmitted to the motor 84 according to the calculation result.
- the control of the motor 84 for adjusting the focus or the control for acquiring the image may be included in the camera 80 or may be configured together with other controllers outside the camera 80.
- the recognition unit 89 reads the identifier information or the address information of the article represented by a bar code or a character from the image photographed by the camera 80.
- the communication unit 86 controls data such as an image photographed through the camera 80, a recognition result read through the recognition unit 89, and data such as article information and article classification information stored in the management server 2.
- the server 2 and the like send and receive to each other.
- the communicator 86 according to an exemplary embodiment transmits the image captured by the camera 80 to the recognition unit 89.
- the communication unit 86 according to an embodiment transmits the identifier information or the address information of the article obtained through the recognition unit 89 to the management server 2 and obtains the article classification information from the management server 2. Specifically, the communication unit 86 transmits the identifier information or the address information of the article to the management server 2.
- the management server 2 retrieves the mail classification information matching the address information.
- the management server 2 When the management server 2 receives the identifier information of the article, the management server 2 searches for address information matching the identifier information of the article, and then searches mail classification information matching the retrieved address information. Then, the retrieved postal matter classification information is transmitted to the article processing apparatus 1. Then, the communication unit 86 receives the mail classification information from the management server 2, and the controller 88 classifies the article according to the obtained mail classification information.
- FIG 9 is an external view of an article processing apparatus according to an embodiment of the present invention.
- the measuring unit 83, the reflector 82, the camera 80, and the lighting unit 81 are sequentially installed at predetermined heights of the movable table such as the conveyor belt, and the article 900 is sequentially installed.
- the article 900 moves at high speed in the right direction.
- the camera 80 and the lighting unit 81 may be located in the same space as shown in FIG. 9.
- Camera 80 may include a lens, a sensor, and a mirror. Or a lens and sensor without a mirror.
- the camera 80 may further include a motor to move the mirror or sensor.
- the camera 80 may be installed in the vertical direction for photographing the side or front and back of the article 900.
- the measuring portion 83 measures the size of the article including the height or volume of the article 900.
- the measurement unit 83 receives an image of the light source unit 830 that irradiates light, such as a laser, onto the article 900, and a signal reflected from the article 900, thereby imaging the image. From the size measuring camera unit 832 for measuring the size of the article. If necessary, the measuring unit 83 may measure the article weight as well as the article size.
- the article 900 While the size of the article is measured, the article 900 continues to move, and focuses on the article 900 on which the article size is measured using the camera 80, and then a barcode or recipient information of the article 900, etc. Acquire an image of. The acquired image is used to classify the article 900.
- FIG. 10 is a flowchart illustrating an article processing method according to an exemplary embodiment.
- an article processing apparatus measures an article size including a height or volume of a moving article (1000).
- the camera focuses on the article using the measured article size.
- the camera adjusts the beam distance between the lens and the sensor.
- the mirror is moved to focus by adjusting the distance of the light beam between the fixed lens and the sensor, respectively.
- the light beam distance between the lens and the sensor is adjusted to focus.
- articles are sorted by using image data acquired through photographing 1020 (1030).
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Abstract
Description
Claims (17)
- 이동하는 물품으로부터 수신되는 광을 집광시켜 투과시키는 렌즈;상기 렌즈로부터 투과되는 광을 반사시키는 거울; 및상기 거울로부터 반사되는 광을 수신하여 이미지 신호로 변환하는 센서;를 포함하며,각각 고정 설치된 렌즈와 센서 사이에서 이동 가능하도록 설치된 거울의 이동을 통해 각 물품을 대상으로 렌즈와 센서 간의 광선 거리를 조정하여 초점을 맞추는 것을 특징으로 하는 카메라.
- 제 1 항에 있어서,상기 센서는 라인 형상의 센싱 영역을 가지는 라인 센서이고,상기 카메라는 라인 스캔 카메라인 것을 특징으로 하는 카메라.
- 제 1 항에 있어서, 상기 거울은높이 및 부피가 서로 상이한 물품들을 촬영할 때 각 물품의 높이 또는 부피에 따라 물품과 카메라 간의 거리에 상응하여 초점을 맞추기 위해 렌즈와 센서 간의 광선 거리가 늘어지거나 줄어지도록 이동하는 것을 특징으로 하는 카메라.
- 제 1 항에 있어서, 상기 거울은거울 축에 의해 상기 거울의 일 측 단이 고정되고 상기 거울의 다른 측 단은 모터와 연결되어, 거울 축을 중심으로 거울의 다른 측 단이 모터에 의해 이동하는 것을 특징으로 하는 카메라.
- 제 4 항에 있어서, 상기 카메라는거울의 일 측 단과 거울 축을 연결하거나 거울의 다른 측 단과 모터 간을 연결하는 관절;을 더 포함하며,상기 거울은 상기 관절을 회전 축으로 하여 이동하는 것을 특징으로 하는 카메라.
- 제 1 항에 있어서, 상기 거울은상기 렌즈를 통해 투과되는 광을 반사시키는 제1 거울; 및상기 제1 거울을 통해 반사되는 광을 재반사하여 상기 센서로 전달하는 제2 거울;을 포함하며,상기 제1 거울 및 제2 거울은 이동되는 형태인 것을 특징으로 하는 카메라.
- 제 1 항에 있어서, 상기 카메라는상기 거울의 흔들림이나 회전 축에서의 유격을 방지하는 탄성 부재;를 더 포함하는 것을 특징으로 하는 카메라.
- 제 1 항에 있어서, 상기 카메라는초점을 맞추기 위해 상기 거울을 이동시키는 모터;를 더 포함하는 것을 특징으로 하는 카메라.
- 고정 설치되어, 이동하는 물품으로부터 수신되는 광을 집광시켜 투과시키는 렌즈; 및센서 축에 의해 일 측 단이 고정되고 고정된 일 측 단을 중심으로 다른 측 단이 이동함에 따라 각 물품을 대상으로 렌즈와의 광선 거리를 조정하여 초점을 맞추고 렌즈를 투과한 광을 이미지 신호로 변환하는 센서;를 포함하는 것을 특징으로 하는 카메라.
- 제 9 항에 있어서, 상기 카메라는초점을 맞추기 위해 상기 센서를 이동시키는 모터;를 더 포함하는 것을 특징으로 하는 카메라.
- 거울을 이동시키거나 거울 없이 센서의 일 측 단을 이동시킴에 따라 렌즈와 센서 간의 광선 거리를 조정하여 이동하는 각 물품을 대상으로 초점을 맞추고 촬영하는 카메라;상기 카메라에 위치하여 초점을 맞추기 위해 거울 또는 센서를 이동시키는 모터;물품의 높이 또는 부피를 포함하는 크기를 측정하는 측정부; 및상기 측정부를 통해 측정된 물품의 크기를 기초로 하여 상기 모터를 구동시키는 제어부;를 포함하는 것을 특징으로 하는 물품 처리 장치.
- 제 11 항에 있어서, 상기 카메라는각각 고정 설치된 렌즈와 센서 사이에서 이동 가능하도록 설치된 거울의 이동을 통해 렌즈와 센서 간의 광선 거리를 조정하여 초점을 맞추는 것을 특징으로 하는 물품 처리 장치.
- 제 11 항에 있어서, 상기 카메라는거울 없이, 센서 축에 의해 일 측 단이 고정되고 고정된 일 측 단을 중심으로 다른 측 단이 이동하는 센서를 이용하여 렌즈와의 광선 거리를 조정하여 초점을 맞추는 것을 특징으로 하는 물품 처리 장치.
- 제 11 항에 있어서, 상기 제어부는상기 측정부를 통해 측정된 물품의 크기로부터 물품의 촬영 면 및 카메라 사이의 거리에 따라 각각 고정 설치된 렌즈와 센서 사이에서 거울이 이동해야 할 이동 값을 연산하거나 거울 없이 고정 설치된 렌즈를 대상으로 센서가 이동해야 할 이동 값을 연산하고, 연산 결과에 따라 상기 모터에 이동을 위한 제어신호를 전송하는 것을 특징으로 하는 물품 처리 장치.
- 제 11 항에 있어서, 상기 카메라는물품의 바코드 또는 주소 정보를 이미지로 획득하는 물품 처리 장치.
- 제 11 항에 있어서, 상기 물품 처리 장치는상기 카메라를 통해 촬영된 영상으로부터 바코드나 문자로 표기된 물품의 식별자 정보 또는 주소 정보를 판독하는 인식부;를 더 포함하는 것을 특징으로 하는 물품 처리 장치.
- 제 16 항에 있어서, 상기 물품 처리 장치는물품 정보 및 물품 분류 정보를 관리하는 관리 서버와 데이터를 송수신하는 통신부; 를 더 포함하며,상기 통신부는 획득된 영상으로부터 상기 인식부를 통해 얻어진 물품의 식별자 정보나 주소 정보를 관리 서버에 전송하고 관리 서버가 물품의 식별자 정보나 주소 정보를 검색하여 획득한 물품 분류 정보를 관리 서버로부터 수신하며,상기 제어부는 수신된 물품 분류 정보를 이용하여 물품을 분류하는 것을 특징으로 하는 물품 처리 장치.
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