Apparatus and method for distinguishing whether an image is of a live object or a copy of a photo or moving picture

Patent metadata

Field	Value
Publication number	US-9684819-B2
Application number	US-201514725225-A
Country	US
Kind code	B2
Filing date	May 29, 2015
Priority date	Apr 26, 2012
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

A method for recognizing an image in an electronic device is provided so as to determine whether or not a specific object is actually within the presence of (immediate photographable vicinity) of the electronic device based on certain characteristics of one or more images of the specific object. Images of the specific object which is focused and shot at different magnifications are obtained. Characteristics of an object region and a background region between the obtained images are compared. Whether the object is real is determined depending on the comparison result. An apparatus hardware configured for operation of the method in electronic devices including but limited to mobile terminals.

First claim

What is claimed is:

1. A method comprising:
obtaining, at an electronic device, at least a first image and a second image for one or more objects;
identifying, from the first image, a first object region corresponding to at least one object of the one or more objects and a first background region;
identifying from the second image a second object region corresponding to the at least one object of the one or more objects and a second background region;
determining a first comparison characteristic corresponding to the first object region and the first background region, and a second comparison characteristic corresponding to the second object region and the second background region; and
presenting, via a display operatively coupled with the electronic device, an indication as to whether the at least one object is a real object based at least in part on the first comparison characteristic and the second comparison characteristic.

2. The method of claim 1 , wherein the at least one object comprises a person, an animal, or a thing.

3. The method of claim 1 , wherein the identifying comprises:
recognizing one or more facial features from the at least one object.

4. The method of claim 3 , wherein the recognizing comprises:
analyzing a characteristic of a face, a hair, an eye, a facial muscle, or any combination thereof.

5. The method of claim 1 ,
wherein the first comparison characteristic is determined based on at least one of contrast, a focal length, sharpness of the first image and any combination thereof.

6. The method of claim 1 , wherein the presenting comprises:
determining that the at least one object is a photo based at least in part on a determination that the first comparison characteristic and the second comparison characteristic coincide with each other.

7. The method of claim 1 , wherein the presenting comprises:
determining that the at least one object is the real object based at least in part on a determination that the first comparison characteristic and the second comparison characteristic do not coincide with each other.

8. The method of claim 1 , wherein the presenting comprises:
determining that the at least one object is a photo based at least in part on a determination that a specified outline is identified from the at least one object.

9. The method of claim 1 , further comprising:
performing a specified function based at least in part on a determination that the at least one object is the real object.

10. The method of claim 9 , wherein the specified function comprises a face recognition function or a motion recognition function.

11. An apparatus comprising:
a camera module; and
a controller operatively coupled with the camera module, the controller configured to:
obtain, via the camera module, at least a first image and a second image including at least one object;
identify, from the first image, a first object region corresponding to the at least one object and a first background region;
identify, from the second image, a second object region corresponding to the at least one object, and a second background region;
determine a first comparison characteristic corresponding to the first object region, and a second comparison characteristic corresponding to the second object region; and
present, via a display operatively coupled with the controller, an indication as to whether the at least one object is a real object based at least in part on the first comparison characteristic and the second comparison characteristic.

12. The apparatus of claim 11 , wherein the controller is configured to: recognize one or more facial features from the at least one object.

13. The apparatus of claim 11 , wherein the controller is configured to: analyze a characteristic of a face, a hair, an eye, a facial muscle, or any combination thereof.

14. The apparatus of claim 11 , wherein the first comparison characteristic and the second comparison characteristic are determined based on at least one of contrast, a focal length, sharpness of the image and any combination thereof.

15. The apparatus of claim 11 , wherein the controller is configured to: determine that the at least one object is a photo based at least in part on a determination that the first comparison characteristic and the second comparison characteristic coincide with each other.

16. The apparatus of claim 11 , wherein the controller is configured to: determine that the at least one object is the real object based at least in part on a determination that the first comparison characteristic and the second comparison characteristic do not coincide with each other.

17. The apparatus of claim 11 ,
wherein the controller is configured to:
determine that the at least one object is a photo based at least in part on a determination that a specified outline is identified from the at least one object.

18. The apparatus of claim 11 , wherein the controller is configured to: perform at least one of a face recognition function or a motion recognition function based at least in part on a determination that the at least one object is the real object.

19. A non-transitory machine-readable storage device storing instructions that, when executed by one or more processors, cause the one or more processors to perform operations comprising:
obtaining, at an electronic device, a first image and a second image for one or more objects including a at least one object of the one or more objects;
identifying, from the first image, a first object region corresponding to the at least one object and a first background region;
identifying from the second image, a second object region corresponding to the at least one object and a second background region;
determining a first comparison characteristic corresponding to the first object region and the first background region, and determining a second comparison characteristic corresponding to the second object region and the second background region, in which the first comparison characteristic and the second comparison characteristic are expressed as numerical values; and
presenting, via a display operatively coupled with the electronic device, an indication as to whether the at least one object is a real object based at least in part on the first and second comparison characteristics.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Choi Daniel
• Kim Suk-Soon
• Namgoong Bo-Ram
• Lee Mi-Sun

Classifications

• H04N23/69

  Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming · CPC title

• H04N23/611 Primary

  where the recognised objects include parts of the human body · CPC title

• G06K9/00288

  Physics · mapped topic

• H04N5/23219

  Electricity · mapped topic

• G06K9/00899

  Physics · mapped topic