Method and apparatus for displaying a light field based image on a user's device, and corresponding computer program product

Patent metadata

Field	Value
Publication number	US-2016353026-A1
Application number	US-201615167921-A
Country	US
Kind code	A1
Filing date	May 27, 2016
Priority date	May 29, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

A method for displaying at least one light field based image on a user's device is disclosed. Such a method comprises displaying the image focused according to at least one focusing parameter determined as a function of a pose of the user's device. A sensor embedded in the users' device, which may be a handheld device, may estimate the pose.

First claim

1 . A method for displaying at least one light field based image on a user's device, wherein it comprises displaying said image focused according to at least one focusing parameter determined as a function of a pose of said device.

2 . The method of claim 1 , wherein said pose is estimated by using at least one sensing device ( 705 ) embedded in said user's device).

3 . The method of claim 2 , wherein said sensing device belongs to the group comprising:
an Inertial Measurement Unit; a camera pointing at at least one reference element; an Internal motion capture system.

4 . The method of claim 1 , wherein said user's device is a handheld device.

5 . The method of claim 1 , wherein said displayed image is a slice image determined as an intersection of a focal stack with an intersection plane depending on at least one pose parameter of said device.

6 . The method of claim 5 , wherein said focal stack comprises a set of focused images of a scene, where two consecutive focused images are spaced a sampling interval apart from each other in the focal stack, and wherein it also comprises:
adjusting said sampling interval as a function of a layout of said scene; determining the focal stack as the set of consecutive focused images spaced an adjusted sampling interval apart from each other.

7 . An apparatus for displaying at least one light field based image, wherein it comprises:
a module for determining at least one focusing parameter for said image as a function of a pose of said apparatus; a display unit for displaying said image focused as a function of said at least one focusing parameter.

8 . The apparatus of claim 7 , wherein it embeds at least one sensing device allowing to estimate said pose.

9 . The apparatus of claim 8 , wherein said sensing device belongs to the group comprising:
an Inertial Measurement Unit; a camera pointing at at least one reference element; an Internal motion capture system.

10 . The apparatus of claim 7 , which is a handheld device.

11 . The apparatus of claim 7 , wherein it comprises a unit for determining said displayed image as a slice image defined as an intersection of a focal stack with an intersection plane depending on at least one pose parameter of said device.

12 . The apparatus of claim 11 , wherein said focal stack comprises a set of focused images of a scene, where two consecutive focused images are spaced a sampling interval apart from each other in the focal stack, and wherein it also comprises:
an adjusting module for adjusting said sampling interval as a function of a layout of said scene; a module for determining the focal stack as the set of consecutive focused images spaced an adjusted sampling interval apart from each other.

13 . A computer program product downloadable from a communication network and/or recorded on a medium readable by a computer and/or executable by a processor, comprising program code instructions for implementing a method according to claim 1 .

14 . A non-transitory computer-readable medium comprising a computer program product recorded thereon and capable of being run by a processor, including program code instructions for implementing a method according to claim 1 .

Assignees

• Thomson Licensing

Inventors

• Blonde Laurent
• Vandame Benoit
• Kerbiriou Paul

Classifications

• H04N23/67

  Focus control based on electronic image sensor signals · CPC title

• H04N23/63 Primary

  by using electronic viewfinders · CPC title

• H04N23/661

  Transmitting camera control signals through networks, e.g. control via the Internet · CPC title

• H04N1/00458 Primary

  Sequential viewing of a plurality of images, e.g. browsing or scrolling · CPC title

• H04N23/6812 Primary

  based on additional sensors, e.g. acceleration sensors · CPC title