Method and device for processing a part of an immersive video content according to the position of reference parts

1. A method of rendering a first part of an immersive video content having a field of view wider than a field of view of a user, the method comprising:

obtaining parameters from at least one controller, said parameters being representative of a first part to render, said first part being a part of the immersive content corresponding to the field of view of the user;

determining a first distance between said first part and at least one reference part of the immersive video content;

processing a version of said first part, called degraded version, by degrading a visual quality of said first part according to said first distance, the greater the first distance, the higher the level of the visual degradation; and

rendering said degraded version of the first part; wherein

said first distance is:

an Euclidian distance between a center of said first part and a center of said at least a reference part, or

the shortest Euclidian distance among a set of distances between any point of said at least a reference part and any point of said first part, or

an average Euclidian distance of distances between any point of said at least a reference part and any point from said first part.

2. The method according to claim 1 , wherein said first part is divided in subparts, a second distance between each said subpart and said at least one reference part being determined, the greater the second distance, the higher the level of degradation for each said subpart.

3. The method according to claim 1 , wherein said level of degradation increases over time.

4. The method according to claim 1 , wherein the visual degradation of said first part belongs to a group of visual degradations comprising:

blurring,

fading down or up colors,

saturating down or up colors,

noising,

pixelating.

5. The method according to claim 1 , wherein said first distance is determined according to several reference parts.

6. The method according to claim 1 , further comprising transmitting said degraded version to a display device.

7. The method according to claim 1 , wherein position of said first part is controlled by the user through controller devices.

8. A device configured for rendering a first part of an immersive video content having a field of view wider than a field of view of a user, the device comprising a memory associated with a processor configured to:

obtain parameters from at least one controller, said parameters being representative of a first part to render, said first part being a part of the immersive content currently rendered and corresponding to the field of view of the user;

determine a first distance between said first part and at least a reference part,

process a version of said first part, called degraded version, by degrading a visual quality of said first part according to said first distance, the greater said first distance, the higher the level of degradation;

render said degraded version of the first part; wherein

said first distance is:

an Euclidian distance between a center of said first part and a center of said at least a reference part, or

the shortest or an average Euclidian distance between any point of said at least a reference part and any point of said first part.

9. The device according to claim 8 , wherein said first part is divided in subparts, a second distance between each said subpart and said at least a reference part being determined, the greater the second distance, the higher the level of degradation for said each subpart.

10. The device according to claim 8 , wherein said level of degradation increases over time.

11. The device according to claim 8 , wherein the visual degradation of said first part belongs to a group of visual degradations comprising:

blurring,

color fading down or up,

color saturating down or up,

noising,

pixelating.

12. The device according to claim 8 , wherein said first distance is determined according to several reference parts.

13. The device according to claim 8 , further comprising transmitting said degraded version to a display device.

14. The device according to claim 8 , wherein position of said first part is controlled by the user through controller devices.

15. 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 the steps of the method of rendering a first part of an immersive video content according to claim 1 when it is executed by a processor.

16. A method comprising:

determining a first distance between a first part of an immersive video content and at least one reference part of the immersive video content, wherein the immersive video content has a field of view wider than a field of view of a user and the first part corresponds to the field of view of the user;

degrading a visual quality of the first part according to the first distance to produce a degraded version of the first part, wherein a level of degradation of the visual quality of the degraded version of the first part increases as the first distance increases;

rendering said degraded version of the first part; wherein

said first distance is:

an Euclidian distance between a center of said first part and a center of said at least a reference part, or

the shortest Euclidian distance among a set of distances between any point of said at least a reference part and any point of said first part, or

an average Euclidian distance of distances between any point of said at least a reference part and any point from said first part.

17. The method according to claim 16 , wherein the first part is divided in subparts, a second distance between each of the subparts and the at least one reference part being determined, the greater the second distance, the higher the level of degradation for each of the subparts.

18. The method according to claim 16 , wherein the level of degradation increases over time.