Patent Application
20080232641
The present invention relates to the field of video camera systems. More particularly, the present invention relates to the measurement of human activities through video, particularly in retail environments.
In a retail store it is desirable to be able to measure the effectiveness of a product display or to measure the attractiveness of a product. Being able to measure these attributes can help with store layout planning, for instance to optimize the placement of displays such that they maximize revenue or margin. Similarly, these attributes can help with the design of the displays or products themselves by maximizing attractiveness.
The present invention relates to the measurement of human activities through video, particularly in retail environments. In an embodiment, the present invention discloses the calculation of display effectiveness based on relative counts of people passing by a display, stopping at the display, and interacting with the display, based upon a view of the display captured by a video camera. A tracking system is used to determine and analyze the activity captured by the video camera.
A first aspect of the present invention is directed to a method for measuring retail display effectiveness, comprising: detecting a moving object in a field of view of an imaging device, the imaging device obtaining image data of a product display; tracking the object in the field of view of the imaging device to obtain a track; and obtaining statistics for the track with regard to the product display.
A second aspect of the present invention is directed to a system for measuring retail display effectiveness, comprising: an imaging device for obtaining image data of a product display; a system for detecting a moving object in a field of view of the imaging device; a system for tracking the object in the field of view of the imaging device to obtain a track; and a system for obtaining statistics for the track with regard to the product display.
A third aspect of the present invention is directed to a program product stored on a tangible computer readable medium, which when executed, measures retail display effectiveness, the computer readable medium comprising program code for: detecting a moving object in a field of view of an imaging device, the imaging device obtaining image data of a product display; tracking the object in the field of view of the imaging device to obtain a track; and obtaining statistics for the track with regard to the product display.
A fourth aspect of the present invention is directed to a method for deploying an application for measuring retail display effectiveness, comprising: providing a computer infrastructure being operable to: detect a moving object in a field of view of an imaging device, the imaging device obtaining image data of a product display; track the object in the field of view of the imaging device to obtain a track; and obtain statistics for the track with regard to the product display.
The illustrative aspects of the present invention are designed to solve the problems herein described and other problems not discussed.
These and other features of this invention will be more readily understood from the following detailed description of the various aspects of the invention taken in conjunction with the accompanying drawings.
The drawings are merely schematic representations, not intended to portray specific parameters of the invention. The drawings are intended to depict only typical embodiments of the invention, and therefore should not be considered as limiting the scope of the invention. In the drawings, like numbering represents like elements.
As detailed above, the present invention relates to the measurement of human activities through video, particularly in retail environments.
The retail industry endeavors to maximize returns by optimizing store layout and display appearances. A store may have rich information regarding the quantity of sales from Point of Sales (POS) transaction logs (TLOGs) that record every item sold (e.g., the time of sale, the customer's discount, the co-occurrence of the item with other items in a shopping basket, etc.). Conventionally, however, only crude measures of the effectiveness of design changes are available.
Changing a display appearance or position may result in measurable differences in a product's sales, but it is clear that other factors can affect those sales. For instance, if some nearby event brings additional customers into the store, then additional sales may result. Even within a store, a nearby promotion may attract more people past a display or distract the attention of customers from the display in question. Thus, it is desirable to measure not just sales, or even sales per customer visiting the store, but also sales per customer who reaches the product in the store, or even sales per customer who sees the product, or actually picks it up. The effectiveness of changes in a product's packaging can thus be measured (e.g., of customers who saw this product 20% more picked it up when in the blue packaging; of customers who picked up the product 20% more bought the low-trans-fat version than the original, etc.).
The number of people entering the store can be measured by a variety of means, including video person-tracking systems. In accordance with embodiment(s) of the present invention, video tracking technology is employed to track people within a store and to understand their actions.
In an embodiment of the present invention, retail display effectiveness is implemented at a camera level. For example, as shown in
The video 24 provided by the video camera 10 is supplied to an automatic surveillance system 26. One such automatic surveillance system is known as the “Smart Surveillance System” and is described in A. Hampapur, L. Brown, J. Connell, S. Pankanti, A. W. Senior, and Y. -L. Tian, Smart Surveillance: Applications, Technologies and Implications, IEEE Pacific-Rim Conference on Multimedia, Singapore, December 2003, which is incorporated herein by reference in its entirety. In accordance with an embodiment of the present invention, the surveillance system 26 includes an object detecting system 28 for detecting moving objects (e.g., customers 16) in the field of view of the video camera 10, a tracking system 30 for tracking those objects, and a database (DB) 32 for storing data provided/used by the surveillance system 26. Preferably, the tracking system 30 is capable of distinguishing and separately tracking a plurality of different objects.
The tracking system 30 is configured to track each customer 16 within the field of view of the video camera 10. Further, the tracking system 30 is configured to count the number of customers 16 in the area of the retail establishment in which the display 12 is located, and to determine the amount of time each customer 16 is located within the field of view of the video camera 10 or within one or more particular “Regions of Interest” (ROIs) within the field of view of the video camera 10, as presented in greater detail below. The count of customers 16 provided by the tracking system 30 can be compared to the number of customers 16 entering the retail establishment and/or a particular section of the retail establishment. The number of customers 16 entering the retail establishment and/or a section thereof can be determined using any now known or later developed technology (e.g., electronic beam). Further, the count of customers 16 provided by the tracking system 30 can also be compared to the sales from products 14 located in the area of the retail establishment containing the display 12 and being monitored by the video camera 10.
As stated above, more precise counts or other figures of interest can be derived by designating a “Region of Interest” (ROI) within the field of view of the video camera 10 and counting the number of people who pass through that ROI. As depicted in
In an embodiment, a graphical user interface (GUI) is provided that allows the drawing and redrawing of ROIs to provide the desired counts, for one or more ROIs in the field of view of any given video camera. Counts can be evaluated by querying a database (e.g., DB 32,
An illustrative GUI 40 (e.g., for a web-based application running in a web browser) in accordance with an embodiment of the present invention is depicted in
A user 52 can draw/select/specify/define one or more ROIs 54 in the window 48, which may be intersected by zero or more tracks 50, using any now known or later developed technique. For example, the user 52 can use a pointing device (e.g., mouse) and drawing tool to define each ROI 54 in the window 48. Many other techniques are also possible. In
The GUI 40 also includes a table 56 for the display of track statistics for the specified video camera, date, and time interval, for one or more selected ROIs 54. This data can be stored, for example, in the DB 32 (
The user 52 can select one or more predefined alerts 58 (e.g., via a hyperlink). Each alert 58 corresponds to a particular condition (e.g., a reach action, a product holding/examining action, etc.) triggered by one or more of the tracks 50.
Examples of actions that can be selected by the user include, but are not limited to:
If the user selects to draw (A8) an ROI on the displayed image, the system responds by calculating and displaying (A11) statistics related to the ROI, such as counting the number of tracks that pass through the ROI (and highlighting those tracks in the graphical display), calculating the average speed of these tracks, calculating the average time each track spent within the ROI, etc. Alternatively a user might specify (A9) additional criteria, such as an action that the tracked object carried out (stopping, touching merchandise, triggering a visual alert, etc.), or some appearance specification (colored red, larger then 5000 pixels etc.). This can also trigger the display (A12) of counts and statistics related to the subselection of tracks. If the user uses the GUI to select (A10) a particular track (e.g., by clicking with a mouse button or just moving the mouse cursor over the track), the system can respond by displaying (A13) particular information about that track (a thumbnail, its duration, speed, length, etc.) and/or by playing the video associated with the track.
The computer system 104 is shown as including a processing unit 108, a memory 110, at least one input/output (I/O) interface 114, and a bus 112. Further, the computer system 104 is shown in communication with at least one external device 116 and a storage system 118. In general, the processing unit 108 executes computer program code, such as the retail display effectiveness system 130, that is stored in memory 110 and/or storage system 118. While executing computer program code, the processing unit 108 can read and/or write data from/to the memory 110, storage system 118, and/or I/O interface(s) 114. Bus 112 provides a communication link between each of the components in the computer system 104. The external device(s) 116 can comprise any device (e.g., display 120) that enables a user to interact with the computer system 104 or any device that enables the computer system 104 to communicate with one or more other computer systems.
The retail display effectiveness system 130 includes various systems for implementing any/all embodiments of the of the present invention. For example, the retail display effectiveness system 130 can include a video camera 10 and a surveillance system 26. The surveillance system 26 can comprise an object detecting system 28 and a tracking system 30. The operations carried out by each of these systems is described in greater detail above.
The computer system 104 can comprise any general purpose computing article of manufacture capable of executing computer program code installed by a user (e.g., a personal computer, server, handheld device, etc.). However, it is understood that the computer system 104 is only representative of various possible computer systems that may perform the various processes of the invention. To this extent, in other embodiments, the computer system 104 can comprise any specific purpose computing article of manufacture comprising hardware and/or computer program code for performing specific functions, any computing article of manufacture that comprises a combination of specific purpose and general purpose hardware/software, or the like. In each case, the program code and hardware can be created using standard programming and engineering techniques, respectively.
Similarly, the computer infrastructure 102 is only illustrative of various types of computer infrastructures that can be used to implement the present invention. For example, in an embodiment, the computer infrastructure 102 comprises two or more computer systems (e.g., a server cluster) that communicate over any type of wired and/or wireless communications link, such as a network, a shared memory, or the like, to perform the various processes of the invention. When the communications link comprises a network, the network can comprise any combination of one or more types of networks (e.g., the Internet, a wide area network, a local area network, a virtual private network, etc.). Regardless, communications between the computer systems may utilize any combination of various types of transmission techniques.
It is understood that some of the various systems shown in
It is understood that the invention further provides various alternative embodiments. For example, in an embodiment, the invention provides a computer-readable medium that includes computer program code to enable a computer infrastructure to carry out and/or implement the various processes of the present invention. It is understood that the term “computer-readable medium” comprises one or more of any type of physical embodiment of the program code. In particular, the computer-readable medium can comprise program code embodied on one or more portable storage articles of manufacture (e.g., a compact disc, a magnetic disk, a tape, etc.), on one or more data storage portions of a computer system, such as the memory 110 and/or storage system 118 (e.g., a fixed disk, a read-only memory, a random access memory, a cache memory, etc.), and/or as a data signal traveling over a network (e.g., during a wired/wireless electronic distribution of the program code).
In another embodiment, the invention provides a business method that performs the processes of the invention on a subscription, advertising, and/or fee basis. A service provider can create, maintain, support, etc., a computer infrastructure, such as the computer infrastructure 102, that performs the processes of the invention for one or more customers. In return, the service provider can receive payment from the customer(s) under a subscription and/or fee agreement and/or the service provider can receive payment from the sale of advertising space to one or more third parties.
In still another embodiment, a computer infrastructure, such as the computer infrastructure 102, can be obtained (e.g., created, maintained, having made available to, etc.) and one or more systems for performing the processes of the invention can be obtained (e.g., created, purchased, used, modified, etc.) and deployed to the computer infrastructure. To this extent, the deployment of each system can comprise one or more of (1) installing program code on a computer system, such as the computer system 104, from a computer-readable medium; (2) adding one or more computer systems to the computer infrastructure; and (3) incorporating and/or modifying one or more existing systems of the computer infrastructure, to enable the computer infrastructure to perform the processes of the invention.
As used herein, it is understood that the terms “program code” and “computer program code” are synonymous and mean any expression, in any language, code or notation, of a set of instructions intended to cause a computer system having an information processing capability to perform a particular function either directly or after either or both of the following: (a) conversion to another language, code or notation; and (b) reproduction in a different material form. The program code can be embodied as one or more types of program products, such as an application/software program, component software/a library of functions, an operating system, a basic I/O system/driver for a particular computing and/or I/O device, and the like.
The foregoing description of the preferred embodiments of this invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and obviously, many modifications and variations are possible.
