JP5656796B2 - Product data processing apparatus, product data processing method and control program - Google Patents

Product data processing apparatus, product data processing method and control program Download PDF

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JP5656796B2
JP5656796B2 JP2011229950A JP2011229950A JP5656796B2 JP 5656796 B2 JP5656796 B2 JP 5656796B2 JP 2011229950 A JP2011229950 A JP 2011229950A JP 2011229950 A JP2011229950 A JP 2011229950A JP 5656796 B2 JP5656796 B2 JP 5656796B2
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information
image
unit
code symbol
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JP2013089084A5 (en
JP2013089084A (en
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英浩 内藤
英浩 内藤
広志 菅澤
広志 菅澤
飯坂 仁志
仁志 飯坂
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東芝テック株式会社
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Description

  Embodiments described herein relate generally to a product data processing device, a product data processing method, and a control program.

  Conventionally, a general object that recognizes (detects) the type or the like of an article by extracting the feature quantity of the target object from image data obtained by imaging the article and comparing it with matching data (feature quantity) prepared in advance Technology related to recognition exists. In addition, a system has been proposed in which the technology related to general object recognition is used for classification of products, food and drinks, and the like.

  By the way, in the conventional technology related to general object recognition, a plurality of products that are candidates for the target object may be recognized. In such a case, the operator is allowed to select a candidate product, but if the list is inadvertently displayed, the selection of the product may be hindered. Therefore, a technology for more efficiently selecting products is required.

The product data processing apparatus according to the embodiment includes one imaging unit, first information extraction means, second information extraction means, and information presentation means.
Then, the first information extraction unit extracts the feature amount of the image used for the object recognition process for specifying the product included in the image as the product specifying information from the image data of the image captured by the imaging unit. In addition, the second information extraction unit extracts a code symbol included in the image as other product specifying information different from the product specifying information from the image data of the image captured by the imaging unit.
Thereby, the information presenting means is specified when the product is specified by either the product specifying information extracted by the first information extracting means or the other product specifying information extracted by the second information extracting means. Present product information. The information presenting means corresponds to the code symbol when the feature amount of the image is extracted by the first information extracting means and the code symbol is extracted by the second information extracting means. Present product information.

FIG. 1 is a perspective view showing an example of a checkout system. FIG. 2 is a block diagram illustrating a hardware configuration of the POS terminal 11 and the commodity reading apparatus 101. FIG. 3 is a diagram illustrating an example of the data format of the PLU file. FIG. 4 is a block diagram illustrating a functional configuration of the CPU of the commodity reading apparatus. FIG. 5 is a flowchart illustrating an example of the operation of the checkout system according to the first embodiment. FIG. 6 is an explanatory diagram of an example of the initial screen. FIG. 7 is an explanatory diagram illustrating an example of a display screen during the object recognition process. FIG. 8 is an explanatory diagram of a display example of object recognition result processing. FIG. 9 is an explanatory diagram illustrating an example of a display screen when a code symbol is detected. FIG. 10 is a flowchart illustrating an example of the operation of the checkout system according to the second embodiment. FIG. 11 is an explanatory diagram illustrating an example of a display screen during the object recognition process. FIG. 12 is an explanatory diagram illustrating an example of a display screen when a product object and a product addition object are detected.

Hereinafter, a product data processing device, a product data processing method, and a control program according to the present embodiment will be described with reference to the drawings, taking a checkout system as an example.
The product data processing apparatus can be applied to a checkout system (POS system) provided with a POS terminal that performs registration and settlement of products related to one transaction. This embodiment is an application example to a checkout system introduced in a store such as a supermarket.

[1] First Embodiment FIG. 1 is a perspective view showing an example of a checkout system.
As shown in FIG. 1, the checkout system 1 includes a POS terminal 11 that performs registration and settlement of commodities related to one transaction.

  The POS terminal 11 is placed on the upper surface of the drawer 21 on the checkout table 51. The drawer 21 is controlled by the POS terminal 11 for the opening operation. On the upper surface of the POS terminal 11, a keyboard 22 that is pressed down by an operator (a store clerk) is arranged. A display device 23 that displays information toward the operator is provided behind the keyboard 22 when viewed from the operator who operates the keyboard 22. The display device 23 displays information on the display surface 23a. A touch panel 26 is laminated on the display surface 23a. A customer display device 24 is erected so as to be rotatable further behind the display device 23. The customer display device 24 displays information on the display surface 24a. The customer display device 24 shown in FIG. 1 has the display surface 24a facing the front side in FIG. 1, but the customer display device 24 is rotated so that the display surface 24a faces the back side in FIG. Thus, the customer display device 24 displays information to the customer.

  A horizontally long table-shaped counter table 151 is arranged so as to form an L shape with the checkout table 51 on which the POS terminal 11 is placed. A load receiving surface 152 is formed on the upper surface of the counter table 151. A shopping basket 153 for storing the product G is placed on the cargo receiving surface 152. The shopping basket 153 may be divided into a first shopping basket 153a brought in by a customer and a second shopping basket 153b placed at a position sandwiching the commodity reading device 101 from the first shopping basket 153a. it can. The shopping basket 153 is not limited to a so-called basket shape, and may be a tray or the like. The shopping basket 153 (second shopping basket 153b) is not limited to a so-called basket shape, and may be a box shape, a bag shape, or the like.

  On the receiving surface 152 of the counter stand 151, the commodity reading apparatus 101 connected to the POS terminal 11 so as to be able to transmit and receive data is installed. The commodity reading apparatus 101 includes a thin rectangular housing 102. A reading window 103 is disposed in front of the housing 102. A display / operation unit 104 is attached to the upper portion of the housing 102. The display / operation unit 104 is provided with a display device 106 on which a touch panel 105 is laminated. A keyboard 107 is disposed on the right side of the display device 106. A card reading groove 108 of a card reader (not shown) is provided on the right side of the keyboard 107. A customer display device 109 for providing information to the customer is installed on the back left side of the display / operation unit 104 as viewed from the operator.

  Such a product reading apparatus 101 includes a product reading unit 110 (see FIG. 2). The merchandise reading unit 110 has an imaging unit 164 (see FIG. 2) disposed behind the reading window 103.

  In the first shopping basket 153a brought in by the customer, a product G related to one transaction is stored. The commodity G in the first shopping basket 153a is moved to the second shopping basket 153b by an operator who operates the commodity reading apparatus 101. In this movement process, the product G is directed to the reading window 103 of the product reading apparatus 101. At this time, the imaging unit 164 (see FIG. 2) arranged in the reading window 103 images the product G.

  The merchandise reading apparatus 101 displays a screen for designating which merchandise G included in the image captured by the imaging unit 164 corresponds to which merchandise registered in a PLU file F1 (see FIG. 3) described later. Displayed on the operation unit 104 and notifies the POS terminal 11 of the product ID of the specified product. In the POS terminal 11, based on the product ID notified from the product reading device 101, information related to sales registration such as the product classification, product name, and unit price of the product corresponding to the product ID is stored in a sales master file (not shown) or the like. And record sales.

FIG. 2 is a block diagram illustrating a hardware configuration of the POS terminal and the commodity reading apparatus.
As shown in FIG. 2, the POS terminal 11 includes a microcomputer 60 as an information processing unit that executes information processing. The microcomputer 60 is configured by connecting a ROM (Read Only Memory) 62 and a RAM (Random Access Memory) 63 to a CPU (Central Processing Unit) 61 that executes various arithmetic processes and controls each unit.

  The drawer 61, the keyboard 22, the display device 23, the touch panel 26, and the customer display device 24 are all connected to the CPU 61 of the POS terminal 11 through various input / output circuits (all not shown). . These are controlled by the CPU 61.

  The keyboard 22 includes a numeric keypad 22d, a temporary fastening key 22e, and a fastening key 22f on which numbers such as “1”, “2”, “3”... .

  An HDD (Hard Disk Drive) 64 is connected to the CPU 61 of the POS terminal 11. The HDD 64 stores programs and various files. All or a part of the programs and various files stored in the HDD 64 are copied to the RAM 63 and sequentially executed by the CPU 61 when the POS terminal 11 is activated. An example of a program stored in the HDD 64 is a product sales data processing program PR. An example of a file stored in the HDD 64 is a PLU file F1 distributed and stored from the store computer SC.

  The PLU file F1 is a product file in which an association between information related to sales registration of the product G and a captured image of the product G is set for each of the products G displayed and sold in the store.

FIG. 3 is a diagram illustrating an example of the data format of the PLU file.
As shown in FIG. 3, the PLU file F1 includes, for each product G, product ID data D11 that stores a product ID uniquely assigned to specify the product G, and a product classification to which the product G belongs. Product classification data D12, product name data D13 for specifying a product name, price data D14 related to a product such as a unit price, and feature amount data for object recognition (general object recognition for specifying product G from a captured image) ( Product identification information: data relating to color, outer shape, surface irregularity, etc.) and product identification data such as data for identifying code symbols (product identification information in specific object recognition) such as barcodes assigned to the product G D15 and similarity data D1 storing the lower limit value of the threshold value when the product is identified as the product G in object recognition And, stores. The PLU file F1 can be read (referenced) by the product reading apparatus 101 via a connection interface 65 described later.

  Note that the data structure of the PLU file F1 is not limited to the example of FIG. 3, and for example, a typical product image may be stored as product identification data.

  Returning to FIG. 2, a communication interface 25 for executing data communication with the store computer SC is connected to the CPU 61 of the POS terminal 11 via an input / output circuit (not shown). The store computer SC is installed in a store backyard or the like. A PLU file F1 distributed to the POS terminal 11 is stored in the HDD (not shown) of the store computer SC.

  Further, the CPU 61 of the POS terminal 11 is connected to a connection interface 65 that enables data transmission / reception with the commodity reading apparatus 101. The product reading apparatus 101 is connected to the connection interface 65. The CPU 61 of the POS terminal 11 is connected to a printer 66 that prints on receipts. The POS terminal 11 prints the transaction content of one transaction on the receipt under the control of the CPU 61.

  The commodity reading apparatus 101 also includes a microcomputer 160. The microcomputer 160 is configured by connecting a ROM 162 and a RAM 163 to a CPU 161 via a bus. The ROM 162 stores a program executed by the CPU 161. The CPU 161 is connected to an imaging unit 164 and an audio output unit 165 via various input / output circuits (none of which are shown). The operations of the imaging unit 164 and the audio output unit 165 are controlled by the CPU 161. The display / operation unit 104 is connected to the product reading unit 110 and the POS terminal 11 via the connection interface 176. The operation of the display / operation unit 104 is controlled by the CPU 161 of the product reading unit 110 and the CPU 61 of the POS terminal 11.

  The imaging unit 164 is a color CCD image sensor, a color COMS image sensor, or the like, and is an imaging unit that performs imaging from the reading window 103 under the control of the CPU 161. For example, the imaging unit 164 captures a 30 fps moving image. Frame images (captured images) sequentially captured at a predetermined frame rate by the imaging unit 164 are stored in the RAM 163.

  The audio output unit 165 is an audio circuit and a speaker for generating a preset warning sound or the like. The sound output unit 165 performs notification by sound such as a warning sound under the control of the CPU 161.

  Furthermore, a connection interface 175 that connects to the connection interface 65 of the POS terminal 11 and enables data transmission / reception with the POS terminal 11 is connected to the CPU 161. In addition, the CPU 161 transmits and receives data to and from the display / operation unit 104 via the connection interface 175.

  Next, the functional configuration of the CPU 161 will be described with reference to FIG.

FIG. 4 is a block diagram illustrating a functional configuration of the CPU of the commodity reading apparatus.
As illustrated in FIG. 4, the CPU 161 of the product reading apparatus 101 executes the program sequentially, thereby performing an image capturing unit 1611, a product detection unit 1612, a similarity calculation unit 1613, a product candidate presentation unit 1614, and a code symbol detection unit. 1615 and a registered product notification unit 1616.

  The image capturing unit 1611 outputs an imaging on signal to the imaging unit 164 and causes the imaging unit 164 to start an imaging operation. The image capturing unit 1611 sequentially captures frame images captured by the image capturing unit 164 and stored in the RAM 163 after the start of the image capturing operation. The frame image capture by the image capture unit 1611 is performed in the order stored in the RAM 163.

  The product detection unit 1612 detects all or part of the product G included in the frame image captured by the image capture unit 1611 using a pattern matching technique or the like. Specifically, a contour line or the like is extracted from an image obtained by binarizing the captured frame image. Next, the contour line extracted from the latest frame image is compared with the contour line extracted from the current frame image, and the part that has changed, that is, the product directed to the reading window 103 for sales registration Detects reflections.

  As another method for detecting a product, the presence or absence of a skin color region is detected from a captured frame image. Next, when the skin color area is detected, that is, when the reflection of the clerk's hand is detected, the contour line is detected as described above, so that the clerk's hand is assumed to be grasped by the hand. Attempt contour extraction. At this time, when the contour indicating the shape of the hand and the other contour are detected, the reflection of the product is detected because the clerk's hand is holding the product.

  The similarity calculation unit 1613 reads the state of the surface such as the hue of the product G and the unevenness of the surface from the whole or a part of the image of the product G captured by the imaging unit 164 of the product reading apparatus 101 as a feature amount. Note that the similarity calculation unit 1613 does not consider the outline or size of the product G in order to shorten the processing time.

  In addition, the similarity calculation unit 1613 reads the surface state such as the color of the registered product and the surface unevenness from the product image of each product registered in the PLU file F1 (hereinafter referred to as registered product) as a feature amount. The similarity between the product G and the product registered in the PLU file F1 is calculated by comparing with the feature amount of the product G. Here, the similarity is the degree of similarity of all or part of the product G when the product image of each product stored in the PLU file F1 is 100% = “similarity: 1.0”. It shows whether you are doing. As described above, the degree of similarity is calculated according to the state of the surface such as the hue and the surface roughness. In addition, for example, the weight may be changed according to the color tone and the surface roughness.

  In addition, the similarity calculation unit 1613 determines whether the similarity calculated for each registered product exceeds a predetermined threshold for the product, and registers the registered product whose similarity exceeds the threshold as the product G. As a candidate (hereinafter referred to as a product candidate). In addition, when the feature-value of each product image is matched and stored in PLU file F1, it is good also as a form compared using the feature-value stored in PLU file F1.

Recognizing an object contained in an image in this way is called generic object recognition. Regarding such general object recognition, various recognition techniques are described in the following documents.
Keiji Yanai, “Current Status and Future of General Object Recognition”, IPSJ Journal, Vol. 48, no. SIG16 [Search August 10, 2010], Internet <URL: http://mm.cs.uec.ac.jp/IPSJ-TCVIM-Yanai.pdf>

Further, techniques for performing general object recognition by dividing an image into regions for each object are described in the following documents.
Jamie Shotton et al., “Semantic Texton Forests for Image Categorization and Segmentation”, [searched August 10, 2010], Internet <URL: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1. 1.145.3036 & rep = rep1 & type = pdf>

  Note that the method of calculating the similarity between the captured image of the product G and the product image of the registered product registered in the PLU file F1 is not particularly limited. For example, the similarity between the captured image of the product G and each registered product registered in the PLU file F1 may be calculated as an absolute evaluation or may be calculated as a relative evaluation.

  When the former calculation method is used, if the captured image of the product G and each registered product registered in the PLU file F1 are compared on a one-to-one basis, the similarity derived as a result of this comparison is used as it is. Good. When the latter calculation method is used, for example, if five registered products (products GA, GB, GC, GD, GE) are registered in the PLU file F1, the captured product G is The similarity is 0.6, the similarity is 0.1 for the product GB, the similarity is 0.1 for the product GC, the similarity is 0.1 for the product GD, and the product GE On the other hand, the similarity is calculated to be 0.1 (100%), for example, the similarity is 0.1, and the total similarity with each registered product.

  By the way, as a result of recognition by the similarity calculation unit 1613, a plurality of product candidates may be recognized. Accordingly, the product candidate presentation unit 1614 reads the product images of these registered products from the PLU file F1 when there are a plurality of registered products that are product candidates based on the recognition result of the similarity calculation unit 1613, and calculates the similarity. A predetermined number is sequentially displayed on the display device 106 in descending order of the similarity calculated by the unit 1613. The processing related to the display of the product image will be described later.

  In addition, when the product candidate presentation unit 1614 receives selection of one product image from the product images displayed on the display device 106 via the touch panel 105, the registered product of the selected product image is the product G. It is judged that it corresponds to. Then, the product candidate presentation unit 1614 outputs information indicating the registered product (for example, product ID, product name, image file name of the selected product image, etc.) to the registered product notification unit 1616.

  In this embodiment, when the product candidate is a single registered product, the registered product is the product G, and the display of the product image of the registered product is omitted. A product image may be displayed on the display device 106 to request confirmation from the operator. In this embodiment, the product candidate presentation unit 1614 displays a product image on the display device 106, but may display other product information, for example, only character information such as a product name and a product price. May be displayed, or the character information and the product image may be displayed together.

  The code symbol detection unit 1615 is a one-dimensional barcode or two-dimensional barcode (for example, QR code; registered trademark) printed or pasted on the product G included in the frame image captured by the image capturing unit 1611. A code symbol is detected using a pattern matching technique or the like, decoded, and information corresponding to the code symbol is output.

  The registered product notification unit 1616 notifies the POS terminal 11 of the product ID corresponding to the registered product instructed by the product candidate presentation unit 1614 together with the number of sales separately input via the touch panel 105 or the keyboard 107. Note that the notification of the product ID may be a form in which the registered product notification unit 1616 directly notifies the product ID data D11 read from the PLU file F1, or the product image file name or product that can specify the product ID. The product name data D13 corresponding to the name may be notified, or the storage location (storage address in the PLU file F1) of the product ID may be notified to the POS terminal 11.

  On the other hand, the CPU 61 functions as a sales registration unit, and performs sales registration of the corresponding product based on the product ID and the sales quantity notified from the registered product notification unit 1616. Specifically, the CPU 61 refers to the PLU file F1 and records the notified product ID and the product classification, product name, unit price, etc. corresponding to the product ID in the sales master file together with the number of sales, and registers the sales. I do.

Next, the operation of the checkout system 1 will be described in detail.
FIG. 5 is a flowchart illustrating an example of the operation of the checkout system according to the first embodiment.

First, the operation on the commodity reading apparatus 101 side will be described.
As shown in FIG. 5, when processing is started in response to the start of product registration by the POS terminal 11, the CPU 161 functions as an image capturing unit 1611 and outputs an imaging on signal to the imaging unit 164 to capture an image. Imaging by the unit 164 is started. The CPU 161 functions as the product candidate presentation unit 1614 and displays an initial screen on the display screen of the display device 106 (step S11).

FIG. 6 is an explanatory diagram of an example of the initial screen.
The initial screen displayed on the display screen 200 includes an image display area 201 for displaying a captured image by the imaging unit 164, a product illustration image corresponding to a recognition result after completion of the object recognition processing, a product quantity input screen, and the like. A product name display area 202 for displaying a product name as a recognition process result or a code symbol recognition result, a price display area 203 for displaying a product price extracted based on the object recognition process result or the code symbol recognition process result, and object recognition A product candidate list display area 204 for displaying a list of product names of product candidates at the time of processing. In the initial state, the product name display area 202, the price display area 203, and the product candidate list display area 204 are grayed out (information non-display state) because there is no information to be displayed. Here, the grayout state is a state in which no information is displayed, and the brightness of the product candidate list display area 204 is darker than the brightness of the product name display area 202 and the price display area 203.
Subsequently, the CPU 161 functions as a product detection unit 1612 and determines whether or not a product image area higher than a predetermined luminance value exists in the image captured by the imaging unit 164, that is, whether or not a product is detected. (Step S12).

If it is determined in step S12 that no product has been detected yet (step S12; No), the CPU 161 enters a standby state.
If a product is detected in the determination of step S12 (step S12; Yes), the CPU 161 functions as a product detection unit 1612 and a code symbol detection unit 1615, and performs object recognition processing and one-dimensional barcode or A code symbol detection process for detecting a code symbol such as a two-dimensional barcode is performed (step S13).

The object recognition process is performed according to the following procedure.
First, the CPU 161 functions as the image capturing unit 1611 and captures a frame image (captured image) captured by the image capturing unit 164 and stored in the RAM 163. Next, the CPU 161 functions as a product detection unit 1612 and detects an image (all or a part of images) of the product G included in the frame image captured by the image capture unit 1611. Subsequently, the CPU 161 functions as a similarity calculation unit 1613, calculates the similarity by reading the feature amount of the product G from the image of the product G and comparing it with the feature amount of each product image registered in the PLU file F1. To do.

  Next, the CPU 161 functioning as the similarity calculation unit 1613 determines whether or not the similarity calculated for each of the registered products exceeds a predetermined threshold for the product based on the similarity data D16. Registered products whose degrees exceed this threshold are extracted as product candidates for product G.

FIG. 7 is an explanatory diagram illustrating an example of a display screen during the object recognition process.
In the image display area 201 of the display screen 200, a captured image of the product G is displayed as a captured image by the imaging unit 164.

In the product candidate list display area 204, a list of product names of product candidates is displayed during the object recognition process. As described above, the product name displayed in the product candidate list display area 204 determines whether or not the product name exceeds a predetermined threshold value based on the similarity data D16. It is the product name of the registered product that exceeded. Here, in the product candidate list display area 204, registered products having a larger similarity value are displayed at the top. That is, in the case of the example in FIG. 7, the product name “XX ramen (ΔΔ food)” is displayed with the highest similarity. If there is no similarity exceeding the threshold corresponding to the similarity data D16, the imaging unit 164 is selected by selecting an area displayed as “Select from list” in the product candidate list display area 204. Since the product candidate list is displayed as a captured image of the product G superimposed on the captured image of the product G, the operator selects a desired product from the product candidate list.
In parallel with this object recognition processing, the CPU 161 functions as a code symbol detection unit 1615 and detects whether or not a code symbol is always detected (step S14).

  If no code symbol is detected in the determination in step S14 (step S14; No), the CPU 161 functions as the product candidate presentation unit 1614, and the number of recognized product candidates (registered products) is plural. It is determined whether or not. Here, when the CPU 161 functioning as the product candidate presentation unit 1614 determines that the number of registered products as product candidates is one, the CPU 161 determines that the product G corresponds to the registered product and automatically ends the object recognition process. (Step S15; Yes), the process proceeds to the object recognition result display process (Step S16).

  When it is determined that the number of product candidates (registered products) is plural, the CPU 161 functioning as the product candidate presentation unit 1614 shifts to product candidate presentation processing and displays a plurality of product candidates as in the example of FIG. .

  That is, the CPU 161 functions as a product candidate presentation unit 1614, and reads the product name data D13 of each registered product that has become a product candidate from the PLU file F1. Next, the CPU 161 functioning as the product candidate presentation unit 1614 sorts the read product name data D13 in the descending order of the calculated similarity and displays the sorted product name data D13 in the product candidate list display area 204.

Therefore, the operator selects one of the product names displayed in the product candidate list display area 204. If a desired product name is not found in the product candidate list display area 204, an image displayed by “Select from list” in the product candidate list display area 204 is selected, so that an image is captured by the imaging unit 164. Since the product candidate list is displayed as an image superimposed on the captured image of the product G, the operator selects a desired product from the product candidate list.
As described above, when the operator selects a product name from the product candidate list displayed in the product candidate list display area 204 or the product candidate list displayed superimposed on the captured image of the product G as a captured image by the imaging unit 164. If the object recognition process is completed (step S15; Yes), the object recognition result is displayed (step S16).

FIG. 8 is an explanatory diagram of a display example of object recognition result processing.
As shown in FIG. 8, in a state where the object recognition is completed and the object recognition result is displayed, the image display area 201 of the display screen 200 is replaced with a captured image of the product G as a captured image by the imaging unit 164. An illustration image IL corresponding to the product G is displayed.

As described above, the illustration image IL corresponding to the product G is displayed instead of the captured image of the product G so that the operator can easily understand that the object recognition is completed.
The product candidate list display area 204 is grayed out so that the operator can easily grasp that the object recognition process has been completed.
If a code symbol is detected in the determination in step S14 (step S14; Yes), the priority for displaying the detection result of the code symbol is higher than the priority for displaying the recognition result of the object recognition process. Since it is preset, the code symbol detection result is displayed (step S17).

FIG. 9 is an explanatory diagram illustrating an example of a display screen when a code symbol is detected.
When a code symbol such as a barcode CS is detected, as shown in FIG. 9, the product name of the product corresponding to the detected code symbol is displayed in the product name display area 202 (“XX” in FIG. 9). Ramen ΔΔ Food ”) is displayed, and the price display area 203 displays the price of the product corresponding to the detected code symbol (“ 140 yen ”in FIG. 9). In the image display area 201, a captured image of the product G captured by the imaging unit 164 is displayed.

  Then, the CPU 161 sets the display of the product candidate list display area 204 as a gray-out display in order to clearly notify the operator that the object recognition process is not performed. As a result, the operator can complete the operation of holding the product in front of the imaging unit 164 in order to immediately capture the product.

  As a result, the CPU 161 functioning as the product candidate presentation unit 1614 or the code symbol detection unit 1615 registers the information indicating the registered product, assuming that the registered product corresponding to the selected product image corresponds to the product G. The information is output to the product notification unit 1616.

Thereby, the registered product notification unit 1616 notifies the POS terminal 11 of the product ID corresponding to the registered product instructed from the product candidate presenting unit 1614 together with the sales number separately input via the touch panel 105 or the keyboard 107, The CPU 61 of the POS terminal 11 receives the merchandise ID of the merchandise G notified from the merchandise reading device 101 and the sales quantity thereof, functions as a sales registration unit, and based on the received merchandise ID and sales quantity, the PLU file The product type and unit price are read from F1, and the product registration process for registering the sales of the product G read by the product reading device 101 is performed (step S18).
On the other hand, the CPU 161 of the commodity reading apparatus 101 initializes the above-described code symbol detection result and object recognition result (step S19).

Further, the CPU 61 of the POS terminal 11 determines whether or not the product registration process is completed due to the end of sales registration by an operation instruction of the keyboard 22 (step S20).
In the determination of step S20, when the product registration process is continued (step S20; No), the CPU 161 of the product reading apparatus 101 shifts the process to step S11 again, and thereafter performs the same process.
In the determination of step S20, when the product registration process is completed, the CPU 161 and the CPU 61 end the process.

  As described above, according to the checkout system 1 of the first embodiment, when registering the product G, the object recognition process and the code symbol detection process are performed in parallel to detect the code symbol. In such a case, it is possible to quickly and easily notify the operator that the object recognition process has been completed, such as by displaying the object recognition screen in a gray-out manner, assuming that more reliable product information has been obtained. The registered product corresponding to the product G can be selected efficiently, and the business efficiency of the product registration process can be improved.

  As mentioned above, although embodiment of this invention was described, the said embodiment was shown as an example and is not intending limiting the range of invention. The above embodiment can be implemented in various other forms, and various omissions, replacements, changes, additions, and the like can be made without departing from the scope of the invention. Moreover, the said embodiment and its deformation | transformation are included in the range of the invention, the summary, and the invention described in the claim, and its equal range.

  For example, in the above-described embodiment, the product reading apparatus 101 captures one product G at a time. However, the number of products G captured at a time is not particularly limited, and may be plural. In the case of imaging a plurality of products G at a time, a configuration in which one product G to be registered can be selected from the plurality of products G by displaying the captured image of the imaging unit 164 on the display device 106. It is also possible to recognize one product G selected via the touch panel 105 and display a product image. Moreover, it is good also as a form which recognizes several goods G at once and displays the goods name with high similarity in the goods candidate list display area 204 based on this recognition result. In the case of this form, the product G included in the captured image is selected by performing an operation such as selecting a product name after selecting one product G included in the captured image. It is assumed that a configuration for associating product names is provided.

[2] Second Embodiment In the first embodiment, the object recognition process and the code symbol detection process are combined. However, the second embodiment is an object recognition process. This is an embodiment in the case where a product object recognition process and a product additional object recognition process for recognizing a product additional object using a flag sticker attached to a product such as a discount sticker or a discount sticker to perform a process such as a discount or a discount. .
FIG. 10 is a flowchart illustrating an example of the operation of the checkout system according to the second embodiment.

First, the operation on the commodity reading apparatus 101 side will be described.
FIG. 10 is a flowchart illustrating an example of the operation of the checkout system according to the second embodiment.
As illustrated in FIG. 10, when processing is started in response to the start of product registration by the POS terminal 11, the CPU 161 functions as an image capturing unit 1611 and outputs an imaging on signal to the imaging unit 164 to capture an image. Imaging by the unit 164 is started. The CPU 161 functions as the commodity candidate presentation unit 1614 and displays the initial screen as shown in FIG. 6 on the display screen of the display device 106 (step S31).

Subsequently, the CPU 161 functions as a product detection unit 1612 and determines whether or not a product image area higher than a predetermined luminance value exists in the image captured by the imaging unit 164, that is, whether or not a product is detected. (Step S32).
If it is determined in step S32 that no product has been detected yet (step S32; No), the CPU 161 enters a standby state.
If a product is detected in the determination in step S32 (step S32; Yes), the CPU 161 functions as the product detection unit 1612 and the code symbol detection unit 1615, and object recognition for the captured image is performed as described above. Processing is performed (step S33).

The object recognition process is performed according to the following procedure.
First, the CPU 161 functions as the image capturing unit 1611 and captures a frame image (captured image) captured by the image capturing unit 164 and stored in the RAM 163. Next, the CPU 161 functions as a product detection unit 1612 and detects an image (all or a part of images) of the product G included in the frame image captured by the image capture unit 1611. Subsequently, the CPU 161 functions as a similarity calculation unit 1613, calculates the similarity by reading the feature amount of the product G from the image of the product G and comparing it with the feature amount of each product image registered in the PLU file F1. To do.

  Next, the CPU 161 functioning as the similarity calculation unit 1613 determines whether or not the similarity calculated for each of the registered products exceeds a predetermined threshold for the product based on the similarity data D16. Registered products whose degrees exceed this threshold are extracted as product candidates for product G.

FIG. 11 is an explanatory diagram illustrating an example of a display screen during the object recognition process.
In the image display area 201 of the display screen 200, a captured image of the product G as a captured image by the imaging unit 164 and a flag sticker TG added to the product as a discount sticker are displayed.
In the product candidate list display area 204, a list of product names of product candidates is displayed during the object recognition process. If there is no similarity exceeding the threshold corresponding to the similarity data D16, the imaging unit 164 is selected by selecting an area displayed as “Select from list” in the product candidate list display area 204. Since the product candidate list is displayed as a captured image of the product G superimposed on the captured image of the product G, the operator selects a desired product from the product candidate list.

In parallel with the object recognition processing in step S33, the CPU 161 determines whether or not a product object, which is an object corresponding to the product itself, has been recognized in the object recognition processing (step S34).
If the product object is not recognized in the determination in step S34 (step S34; No), the process proceeds to step S35.
If it is determined in step S34 that the product object is recognized (step S34; Yes), the CPU 161 displays the object recognition result (step S37).

Subsequently, the CPU 161 determines whether or not a product addition object that is an object corresponding to an article (for example, a discount label) added to the product in the object recognition process has been recognized (step S35).
In the determination in step S35, if the product addition object is not recognized (step S35; No), the CPU 161 shifts the process to step S33 again and continues the object recognition process.
If a product addition object is recognized in the determination in step S35 (step S35; Yes), product addition information corresponding to the product addition object is stored (step S36). Specifically, in the case of FIG. 11, 20 yen discount (20 yen is subtracted from the price) is stored as product additional information.

FIG. 12 is an explanatory diagram illustrating an example of a display screen when a product object and a product addition object are detected.
For example, when a product additional object “20 yen discount” is detected, the product name of the product corresponding to the detected code symbol is displayed in the product name display area 202 as shown in FIG. , “XX Ramen △△ Food”) is displayed, and in the price display area 203, the price after the processing indicated by the product addition object from the price of the product corresponding to the detected code symbol (in FIG. 9, The product price is discounted by 20 yen and “120 yen (after discounting 20 yen)”) is displayed.

  Thereafter, as illustrated in FIG. 8, in a state where the object recognition is completed and the object recognition result is displayed, the CPU 161 displays the image of the product G as an image captured by the imaging unit 164 in the image display area 201 of the display screen 200. In place of the captured image, an illustration image IL or the like corresponding to the product G is displayed, and the operator can easily grasp visually that the object recognition is completed. Similarly, the product candidate list display area 204 is grayed out so that the operator can easily understand that the object recognition processing has been completed. As a result, the operator can complete the operation of holding the product in front of the imaging unit 164 in order to immediately capture the product.

  Further, the CPU 161 functioning as the product candidate presentation unit 1614 or the code symbol detection unit 1615 assumes that the registered product corresponding to the selected product image corresponds to the product G, and notifies the registered product notification of information indicating the registered product. To the unit 1616.

Thereby, the registered product notification unit 1616 notifies the POS terminal 11 of the product ID corresponding to the registered product instructed from the product candidate presenting unit 1614 together with the sales number separately input via the touch panel 105 or the keyboard 107, The CPU 61 of the POS terminal 11 receives the merchandise ID of the merchandise G notified from the merchandise reading device 101 and the sales quantity thereof, functions as a sales registration unit, and based on the received merchandise ID and sales quantity, the PLU file The product type and unit price are read from F1, and a product registration process for registering the sales of the product G read by the product reading device 101 is performed (step S38).
On the other hand, the CPU 161 of the commodity reading apparatus 101 initializes the object recognition result described above (step S39).

Further, the CPU 61 of the POS terminal 11 determines whether or not the product registration process is completed by the end of sales registration by an operation instruction of the keyboard 22 (step S40).
When the product registration process is continued in the determination in step S20 (step S40; No), the CPU 161 of the product reading apparatus 101 shifts the process to step S11 again, and thereafter performs the same process.
If the product registration process is completed in the determination in step S40, the CPU 161 and the CPU 61 end the process.

  As described above, according to the checkout system 1 of the second embodiment, when the product G is registered, the object recognition process includes the product object recognition process and the product additional information object recognition process. If the product additional information object is recognized in parallel, processing (discount, discount, etc.) corresponding to the product additional information object can be reliably performed.

Therefore, the business efficiency of the product registration process can be improved.
In the above description of the second embodiment, the code symbol detection processing has not been described. However, when the code symbol detection processing function is also provided, an object (in which the function of the code symbol is invalidated in the vicinity of the code symbol ( It is preferable that a process corresponding to the product additional information object is surely performed by providing an invalidation seal or the like.

[3] Modification of Embodiment In the above embodiments, the POS terminal 11 includes the PLU file F1. However, the present invention is not limited to this, and the product reading apparatus 101 may include the PLU file F1. The external device accessible by the POS terminal 11 and the product reading device 101 may have the PLU file F1.

  Further, in each of the above embodiments, the POS terminal 11 and the product reading device 101 are configured in two units. Good.

  In addition, the program executed by each device of the above embodiment is provided by being incorporated in advance in a storage medium (ROM or storage unit) included in each device. Various types of files may be recorded and provided on a computer-readable recording medium such as a CD-ROM, a flexible disk (FD), a CD-R, or a DVD (Digital Versatile Disk). Furthermore, the storage medium is not limited to a medium independent of a computer or an embedded system, but also includes a storage medium in which a program transmitted via a LAN, the Internet, or the like is downloaded and stored or temporarily stored.

  Further, the program executed by each device of the above embodiment may be stored on a computer connected to a network such as the Internet and provided by being downloaded via the network, or via a network such as the Internet. It may be configured to be provided or distributed.

1 Checkout System 11 POS Terminal 23 Display Device 60 Microcomputer 61 CPU
101 Product Reading Device 102 Housing 103 Reading Window 104 Display / Operation Unit 105 Touch Panel 106 Display Device 107 Keyboard 108 Card Reading Slot 109 Customer Display Device 110 Product Reading Unit 160 Microcomputer 161 CPU
200 Display Screen 201 Image Display Area 202 Product Name Display Area 203 Price Display Area 204 Product Candidate List Display Area 1611 Image Acquisition Unit 1612 Product Detection Unit 1613 Similarity Calculation Unit 1614 Product Candidate Presentation Unit 1615 Code Symbol Detection Unit 1616 Registered Product Notification Part F1 PLU file IL Illustration image TG Flag sticker D11 Product ID data D12 Product classification data D13 Product name data D14 Price data D15 Product identification data D16 Similarity data

JP 2003-173369 A

Claims (4)

  1. One imaging unit,
    First information extraction means for extracting a feature amount of an image used for object recognition processing for specifying a product included in the image as product specifying information from image data of an image captured by the imaging unit;
    Second information extraction means for extracting a code symbol included in the image as other product specifying information different from the product specifying information from image data of an image captured by the imaging unit;
    When the product is specified by either the product specification information extracted by the first information extraction unit or the other product specification information extracted by the second information extraction unit, the specified product information is presented. Information presenting means,
    Equipped with a,
    The information presenting means, when the feature amount of the image is extracted by the first information extracting means and the code symbol is extracted by the second information extracting means, product information corresponding to the code symbol Present,
    Product data processing device.
  2. Comprising display means for displaying the product information;
    The information presenting means displays the product name of the identified product as the presentation of the product information on the display means.
    The merchandise data processing apparatus according to claim 1 .
  3. A product data processing method executed in a product data processing apparatus including one imaging unit,
    A first information extraction step of extracting feature values of an image used for object recognition processing for specifying a product included in the image as product specifying information from image data of an image captured by the imaging unit;
    A second information extracting step of extracting a code symbol included in the image as other product specifying information different from the product specifying information from image data of an image captured by the imaging unit;
    When the product is specified by either the product specification information extracted by the first information extraction process or the other product specification information extracted by the second information extraction process , the specified product information is presented. Information presentation process,
    Including
    In the information presentation process, when the feature amount of the image is extracted by the first information extraction process and the code symbol is extracted by the second information extraction process, the product information corresponding to the code symbol Present,
    Product data processing method.
  4. A control program for controlling a product data processing apparatus having one imaging unit by a computer,
    The computer,
    First information extraction means for extracting a feature amount of an image used for object recognition processing for specifying a product included in the image as product specifying information from image data of an image captured by the imaging unit;
    Second information extraction means for extracting a code symbol included in the image as other product specifying information different from the product specifying information from image data of an image captured by the imaging unit;
    When the product is specified by either the product specification information extracted by the first information extraction unit or the other product specification information extracted by the second information extraction unit, the specified product information is presented. Information presenting means,
    To function ,
    The information presenting means, when the feature amount of the image is extracted by the first information extracting means and the code symbol is extracted by the second information extracting means, product information corresponding to the code symbol Present,
    Control program.
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