Detecting a composition of an audience
First Claim
1. A method of automatically detecting a composition of an audience of an information presenting device comprising:
- capturing at least one image of the audience;
determining a number of people within the at least one image; and
prompting the audience to identify its members if a change in the number of people is detected based on the number of people determined to be within the at least one image, wherein determining the number of people within the at least one image comprises;
(a) determining at least one difference image based on at least two captured images;
(b) developing at least one shape from the at least one difference image;
(c) identifying at least one center of the at least one shape;
(d) adding a symbol having a predetermined size and indicative of the at least one center of the at least one shape to a histogram;
(e) repeating (a)-(d); and
(f) if any symbol in the histogram grows beyond a predetermined threshold, counting that symbol as a person.
12 Assignments
0 Petitions
Accused Products
Abstract
Methods and apparatus for detecting a composition of an audience of an information presenting device are disclosed. One disclosed method captures images of the audience, determines a number of people within the images and prompts the audience to identify its members if a change in the number of people in the audience is visually detected. This disclosed method avoids both under sampling of the audience and excessive prompting of the audience by only requesting entry of identification data when an audience change occurs. Methods and apparatus to determine the number of persons in an image or series of image are also disclosed.
-
Citations
44 Claims
-
1. A method of automatically detecting a composition of an audience of an information presenting device comprising:
-
capturing at least one image of the audience; determining a number of people within the at least one image; and prompting the audience to identify its members if a change in the number of people is detected based on the number of people determined to be within the at least one image, wherein determining the number of people within the at least one image comprises;
(a) determining at least one difference image based on at least two captured images;
(b) developing at least one shape from the at least one difference image;
(c) identifying at least one center of the at least one shape;
(d) adding a symbol having a predetermined size and indicative of the at least one center of the at least one shape to a histogram;
(e) repeating (a)-(d); and
(f) if any symbol in the histogram grows beyond a predetermined threshold, counting that symbol as a person. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. An apparatus to detect a composition of an audience of an information presenting device comprising:
-
a camera to capture at least one image of the audience; a processor; a memory storing computer readable instructions which, when executed, cause the processor to; determine a number of people within the at least one image; and develop a prompt signal requesting the audience to identify its members if a change in the number of people is visually detected; and an output device responsive to the prompt signal to output an indication requesting the audience to identify its members, wherein the processor determines the number of people within the at least one image by;
(a) determining at least one difference image between at least two images captured by the camera;
(b) developing at least one shape from the at least one difference image;
(c) identifying at least one center of the at least one shape;
(d) adding a symbol having a predetermined size and indicative of the at least one center of the at least one shape to a histogram;
(e) repeating (a)-(d); and
(f) if any symbol in the histogram grows beyond a predetermined threshold, counting the symbol as a person. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
-
-
35. A computer readable medium storing computer readable instructions which, when executed, cause at least one computer to:
-
capture at least one image of an audience consuming a program; determine a number of people within the at least one image; and output a prompt signal requesting the audience to identify its members if a change in the number of people is detected from the at least one image, wherein the at least one computer determines the number of people within the at least one image by;
(a) determining at least one difference image between at least two captured images;
(b) developing at least one shape from the at least one difference image;
(c) identifying at least one center of the at least one shape;
(d) adding a symbol having a predetermined size and indicative of the at least one center of the at least one shape to a histogram;
(e) repeating (a)-(d); and
(f) if any symbol in the histogram grows beyond a predetermined threshold, counting the symbol as a person. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44)
-
Specification