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1. WO2020197878 - METHOD FOR DISPLAYING IMAGES ON A FLEXIBLE DISPLAY DEVICE IN A HEAD-MOUNTABLE DEVICE AND CORRESPONDING APPARATUS

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

CLAIMS

1. A method (1300) for rendering images on at least one flexible display device in a head-mountable device, said method comprising:

configuring (1301 ) image processing features for images to be rendered on the at least one flexible display device as a function of a first display area of said at least one flexible display device and a second display area of said at least one flexible display device on which said images are to be rendered, the second display area surrounding the first display area, and the first display area corresponding to a focal field of view and the second display area corresponds to a peripheral field of view; and

rendering (1302) images on said first and second display areas of at least one flexible display device according to said configured image processing features.

2. The method according to claim 1 , wherein the head-mountable device comprises an opening configured to receive said at least one flexible display device for inserting said at least one flexible display device into said head-mountable device, said head-mountable device constraining said at least one flexible display device to take a curved form when inserted into said head-mountable device.

3. The method according to claim 2, said method further comprising determining dimensions and position of said first display area and of said second display area as a function of dimensions of said at least one flexible display device and of said curved form.

4. The method according to any of claim 1 to 3, wherein said image processing features comprise at least one of:

applying higher spatial and/or temporal resolution image processing to images to be rendered on said first display area than for images to be rendered on said second display area;

applying a warping transformation to images to be rendered on said first display area as a function of said curved form, to correct a distortion caused by lenses in said head-mountable device, and not applying said warping transformation to images to be rendered on said second display area;

extending images to be rendered on said first area to said second area, by extraction of image features from outer display zones of said images to be rendered on said first area.

5. The method according to claim 3, wherein said dimensions and position of said first display area and of said second display area are further a function of:

a focal length of a set of lenses comprised in the head-mountable device;

a focal center distance between a set of lenses comprised in the head-mountable device;

an eye to display distance;

a display to lens distance;

an interpupillary distance from a user of said head-mountable device.

6. The method according to claim 5, wherein said interpupillary distance is measured by said at least one flexible display device based on a sensor element in said at least one flexible display device.

7. A flexible display device (1500) for rendering images when inserted in a head-mountable device, the flexible display device comprising at least one processor (1501 ) configured to:

configure image processing features for images to be rendered on the flexible display as a function of a first display area of said flexible display device and as a function of a second display area of said flexible display device on which said images are to be rendered, the second display area surrounding the first display area, and the first display area corresponding to a focal field of view and the second display area corresponds to a peripheral field of view; and

render images on said first and second display areas of said flexible display device according to said configured image processing features.

8. The flexible display device according to claim 7, the head-mountable device comprising an opening configured to receive said flexible display device for inserting said flexible display device into said head-mountable device, said head-mountable device constraining said flexible display device to take a curved form when inserted into said head-mountable device, said processor being further configured to:

determine dimensions and position of said first display area and of said second display area as a function of dimensions of said at least one flexible display device and of said curved form.

9. The flexible display device according to claim 7 or 8, wherein said processor is further configured to apply at least one of the following image processing features:

to apply higher spatial and/or temporal resolution image processing to images to be rendered on said first display area than for images to be rendered on said second display area;

to apply a warping transformation to images to be rendered on said first display area as a function of said curved form, to correct a distortion caused by lenses in said head-mountable device, and not apply said warping transformation to images to be rendered on said second display area;

to extend images to be rendered on said first area to said second area, by extraction of image features from outer display zones of said images to be rendered on said first area.

10. The flexible display device according to claim 7 to 9, wherein said processor is further configured to obtain an interpupillary distance from a user of said head-mountable device, for determining a center position of said first area.