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US 9,426,441 B2Granted
Methods for carrying and transmitting 3D z-norm attributes in digital TV closed captioning
AssigneeDolby Laboratories Licensing Corporation
InventorsJames Dougherty, Thomas Zato, Gianluca Filippini
Life of this patent
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Abstract
Methods for carrying and transmitting overlay depth data of an overlay of a stereoscopic image of a display device as a fraction of a viewer distance from the overlay are described.
Claims20
A computer-implemented method for displaying a stereoscopic image on a playback display device, comprising executing on a processor the steps of:
- A) determining a normalized pixel separation offset based on an interocular separation at infinity for a screen resolution of a normalized display device and a percentage of viewer distance from a screen plane of the normalized display device of an object in the stereoscopic image;
- B) generating overlay depth data of an overlay of the stereoscopic image for the playback display device, the overlay depth data comprising the normalized pixel separation offset;
- C) allocating the overlay depth data in an available portion of a layer of a multilayer protocol system for transmission of overlays;
- D) transmitting the overlay depth data to the playback display device;
- E) converting, for the playback display device, the normalized pixel separation offset to a device specific pixel separation offset using the ratio of resolutions of the normalized display device and the playback display device;
- and
- F) displaying the stereoscopic image on the playback display device using the device specific pixel separation offset.
4 more elements
A computer-implemented method for displaying a stereoscopic image to a client device, the method comprising executing on a processor the steps of:
- determining a normalized pixel separation offset based on an interocular separation at infinity for a screen resolution of a normalized display device and a percentage of viewer distance from a screen plane of the normalized display device of an object in the stereoscopic image:
- generating overlay depth data of an overlay of the stereoscopic image of for the client device, the overlay depth data comprising the normalized pixel separation offset a normalized fraction of a viewer distance from a screen plane of the display device;
- coding the overlay depth data in an available portion of a layer of a multilayer protocol system for transmission of overlays;
- transmitting the coded overlay depth data to the client device;
- converting, for the client device, the normalized pixel separation offset to a device specific pixel separation offset using the ratio of resolutions of the normalized display device and the display device;
- and
- displaying the stereoscopic image on the client device using the device specific pixel separation offset.
4 more elements
Dependencies are inferred from the claim text.