WO2021234303A1

WO2021234303A1 - System for dynamic projection of graphic and text information

Info

Publication number: WO2021234303A1
Application number: PCT/FR2021/050902
Authority: WO
Inventors: Marc JUDOR
Original assignee: Mon Lumi
Priority date: 2020-05-20
Filing date: 2021-05-20
Publication date: 2021-11-25
Also published as: FR3110759B1; FR3110759A1

Abstract

The invention relates to a system for dynamic marking of graphic and text information on a plurality of articles (20 to 25) arranged on a display stand (10). Each of the articles (20 to 25) comprises a packaging having a display surface (40 to 45) and a graphic identification marker (30, 35) coding an identifier of the article (20 to 25). The system further comprises: at least one projector (3) and at least one camera (2) for which the fields of vision contain the presentation space of the articles (20 to 25), an associated computer with a memory comprising a database associating an identifier and at least one associated piece of information with each article (20 to 25), the piece of information coming from an information system for dynamic management of the information, the computer executing a first computer program in order to repeatedly determine the position and orientation of each of the articles (20 to 25) and a second computer program for controlling the aggregate image to be projected on the presentation space of the articles, the aggregate image being computed so that the image of the piece of information is projected for each of the articles onto the display surface depending on the position and orientation detected by the first computer program.

Description

DYNAMIC PROJECTION SYSTEM OF GRAPHIC AND TEXTUAL INFORMATION

Field of the invention

The present invention relates to the field of the dynamic presentation of information on and / or around articles arranged on a presentation medium to be available to a user. These include items sold in a self-service store, generalist or specialized food or other point of sale, or even the provision of tools or parts in an industrial assembly workshop or even a workshop. crafts, or a logistics site.

[00002] Generally, the articles receive a marking during their installation, by affixing a label. solution is to re-label by removing the original label and replacing it with a new label, or sometimes by superimposing the new label on the old label.

[00003] It has also been proposed to place near the articles electronic labels formed by digital displays which can receive variable information. But this solution involves a fairly heavy cabling infrastructure, and provides erroneous information as soon as the items are moved from their initial location.

[00004] More recently, attempts have been made to use the augmented reality technique to provide more dynamic information to the consumer.

State of the art

[00005] For example, patent application WO2014174363 is known in the state of the art, which describes an object presentation system comprising a control system connected to a projection means and to an object detection system, an object. to present or a display support, arranged to receive thereon an object to be presented, arranged in a movable manner on a support and projection surface. The object detection system comprises a camera coupled to a processing means computer images connected to the control system, which camera is spaced from the support and projection surface, preferably positioned above the latter, to detect either an object to be presented or the display support whatever its position on said surface so as to provide said computer processing means with information on the positioning of the display support and / or of an object to be presented on the support and projection surface. The control system is arranged to process this information and transmit to the projection means a projection command so that, when an object to be presented is placed on the support and projection surface or on the display support and that the latter is moved on the support and projection surface, the projection means directs a beam of steerable light which illuminates the object as it moves from one place on the support and projection surface to another place on this area.

Disadvantages of the prior art

[00006] The solutions of the prior art are complex to implement and require equipment that is expensive and difficult to adjust. Some of the known solutions require the user to be equipped with a specific accessory, for example glasses of the hololens type, or to have a tablet for superimposing the information with the area observed.

Solution provided by the invention

[00007] In order to remedy these drawbacks, the present invention relates in its most general sense to a system for dynamically projecting graphic and textual information onto a plurality of articles arranged on a display unit characterized in accordance with claim 1.

[00008] According to a first variant, the system according to the invention comprises several cameras arranged with different optical axes.

[00009] According to another variant, it comprises several projectors arranged with different optical axes. [00010] According to a preferred variant, it comprises a ceiling support opening at its base and integrating a projector and a camera, the optical axes of which define a common optical interaction space with the storage area for said articles.

Advantageously, said display supporting the articles has at least one flat surface located in the field of view of said camera and of said projector. [00012] Preferably, said packaging of the articles each have an area bearing a matrix code encoding the identifier of the article.

[00013] The invention also relates to a method for dynamic marking of the price of a plurality of articles comprising:

A step of acquiring an image of a display surface of a plurality of articles each contained in a packaging having a display surface and a visual identification marker of the article that it contains. processing of said image to extract

• On the one hand, the topology of each of the display surfaces

• On the other hand, the information encoded in each of the associated markers

A step of querying an information base to determine for each of said items at least one graphic content corresponding to the information encoded in each of said markers, said graphic content being transmitted by an information system

A step of calculating an aggregated image formed by said graphic contents oriented and positioned as a function of said topology

And a step of projecting said aggregated image on the display surface of said articles.

[00014] Advantageously, said step of processing said image comprises a comparison with the image acquired previously in order to detect the articles withdrawn and update said information system and the graphic content corresponding to the article withdrawn.

[00015] According to a particular mode of implementation, the method comprises an intermittent update of the graphic information associated with at least part of said identifiers. Detailed description of a non-limiting example of an embodiment

The present invention will be better understood on reading the following description, relating to a non-limiting example of an embodiment illustrated by the appended drawings where:

• Figure 1 shows a schematic view of a system according to the invention

• Figure 2 shows a schematic view of the functional architecture of a solution according to the invention.

Hardware architecture

The system comprises a ceiling support (1), formed for example by a cylindrical box with an open base, containing a projector (2) and a camera (3) as well as a computer (4) and a local memory (5 ).

[00018] It also comprises a flat and horizontal display unit (10) in the example described, supporting articles (20 to 25). These articles (20 to 25) are deposited freely on the surface of the display unit (10). They each have a display area (30, 35), for example an area of the upper surface of the packaging exhibiting a matt white surface finish, as well as an identifier (40 to 45), for example of the QrCode type. This identifier (40 to 45) encodes at least one identifier of the article (20 to 25), and possibly additional information such as the weight and the code of the nature of the article. This code (40 to 45) is affixed when the article is packaged, and optionally recorded in the information system (6) of the store or workshop.

The camera (2) is oriented to allow reading of the display area of the articles (20 to 25) on the display (10). It is used above all to acquire images making it possible to read the markers (40 to 45) and the outlines of the articles (20 to 25) and / or display areas (30, 35).

The projector (3) is also directed towards the display area of the articles (20 to 25) on the display (10). It is used to project an aggregated image calculated so that it displays on the display area (30, 35) of each of said articles (20 to 25) the corresponding graphic or textual information. Functional architecture

The operation of the system is as follows.

We first proceed to the marking of each article during a step (100) at the end of which is affixed by a marking operation (200) on the packaging of each article a marker (40 to 45 ), for example a QrCODE calculated in during this step (100) depending on the nature of the article (for example “wild sea bass” or the internal code of this product), the weight, and possibly the deadline for consumption. This information is also recorded in a memory (60) of the information system.

The articles are then placed (step 210) on the display (10) by simply ensuring that the marking areas (40 to 45) and display (30, 35) of the different articles do not overlap so to avoid their masking.

The computer (4) regularly controls the acquisition of an image of the articles (20 to 25) deposited on the display (10) by the camera (2). The camera delivers an image which is the subject of digital processing (220) consisting in extracting the useful information:

Position and orientation of each of the items (20 to 25) and / or of the display area (30, 35), for example barycenter, and guiding vectors of each of the display areas (30, 35)

Compare with the previous image to detect removed or added items. This information is also transmitted to the information system (60).

Reading the identifier (40 to 45) of each of the articles (20 to 25)

Recording in the local database (5) of information for each of the articles (20 to 25).

[00025] Optionally, this processing also comprises the decoding of the information contained in the matrix code (40 to 45) of the article (20 to 25), for example the nature or the identifier of the article and its weight.

The next step (230) concerns the calculation of an aggregated image composed of a localized assembly of graphic information for each of the articles, calculated as a function:

The identifier of the article, the orientation and the position of the display area Information recorded in the database (60) of the information system, for this same article.

This information relating to each item is periodically refreshed by a marketing process (300) taking into account the stock of available products, the time between the time of processing and the expiration date, decisions to launch a promotional campaign, the sales status of complementary products, the speed of rotation of the articles on the display (10), etc. These changes are reflected in particular in an update of the price associated with each item or each product range.

This aggregated image thus calculated is transmitted to the projector (2) which projects it onto the presentation surface.

The method further comprises a step of verifying the conformity of the projection with respect to the information recorded in the local memory (5). To this end, the camera (2) periodically transmits images for processing consisting in verifying that the display concerning each item is indeed in the corresponding display zone. For this, the projector can use a structured light to facilitate this verification.

[00030] The camera also detects the passage of a hand into the optical field of the projector (3) and the removal of an article.

The device according to the invention makes it possible to make the projection carried out interactive in the tactile sense of the term (making it possible to extend the type and number of information broadcast). The projection will react if someone touches the price or one of the elements located in the projection field, and will broadcast additional information related to the affected area.

Claims

1 - System for dynamic projection of graphic and textual information on a plurality of articles (20 to 25) arranged on a display unit (10) as well as packaging for each of said articles (20 to 25) characterized in that

Each of said packages having a display surface (40 to 45) and a graphic identification marker (30, 35) encoding an identifier of said item (20 to 25)

And in that said system further comprises: at least one projector (3) and at least one camera (2) whose fields of vision contain a space for presenting said articles (20 to 25), a computer associated with a memory comprising a database associating with each item (20 to 25) an identifier and at least one associated item of information, said information coming from an information system for the dynamic management of said information said computer executing a first computer program to repeatedly determine the position and orientation of each of said articles (20 to 25) and a second computer program for controlling an aggregated image to be projected onto said display space of said articles, said aggregated image being calculated such that an image of the information is projected for each of said items in said display surface as a function of the position and orientation detected by said first computer program e.

2 - System for dynamic projection of graphic information according to claim 1 characterized in that it comprises several cameras (2) arranged with different optical axes.

3 - System for dynamic projection of graphic information according to claim 1 characterized in that it comprises several projectors (3) arranged with different optical axes. 4 - System for dynamic projection of graphic information according to claim 1 characterized in that it comprises a support (1) ceiling opening at its base and integrating a projector and a camera (2) whose optical axes define a space common optical interaction with a storage area for said articles.

5 - System for dynamic projection of graphic information according to claim 1 characterized in that said display supporting the articles has at least one flat surface located in the field of view of said camera (2) and of said projector (3).

6 - System for dynamic projection of graphic information according to claim 1 characterized in that said packaging of the articles (20 to 25) each have an area carrying a matrix code encoding the identifier of the article (20 to 25).

7 - Method of dynamic projection of the price of a plurality of items comprising:

• On the one hand, the position and orientation of each of the display surfaces

A step of calculating an aggregated image formed by said graphic contents oriented and positioned as a function of said position and orientation And a step of projecting said aggregated image on the presentation surface of said articles, said aggregated image being calculated such that the image of information for each of said items is projected onto said display surface (30, 35) based on position and orientation.

8 - A method of dynamically projecting the price of a plurality of items according to claim 7 characterized in that said step of processing said image comprises a comparison with the image acquired previously to detect the items withdrawn and update said system. information and graphic content corresponding to the article withdrawn.

9 - A method of dynamically projecting the price of a plurality of items according to claim 7, characterized in that it comprises an intermittent update of the graphic information associated with at least part of said identifiers.