Gianluca Filippini

8270498, Sep 18, 2012

May 11, 2009

12/463859

Gianluca Filippini - Los Gatos CA, US
James Oliver Normile - Los Altos CA, US
Xiaojin Shi - Santa Cruz CA, US
Xiaosong Zhou - San Jose CA, US
Ionut Hristodorescu - San Jose CA, US

Apple Inc. - Cupertino CA

H04N 7/12
G06K 9/40

37524027, 382269

A method and device for dithering video from a decoder. The method and device provide: selecting a segment of video frames from the video; computing a noise map for the segment of the video, the noise map computed from differences among pixels selected from spatially-distributed sampling patterns in the segment; determining contours of quantization artifacts within the video frame based on the noise map and a histogram of pixel values in the video frame; computing a gradient measurement of pixel values along the contours; identifying regions along the contours of quantization artifacts to apply dithering based on the noise map and the gradient measurement; determining a dithering strength based on the noise map and the gradient measurement; and applying dithering noise to the identified regions at the determined dithering strength.

8401370, Mar 19, 2013

Mar 5, 2011

13/041362

James Dougherty - Morgan Hill CA, US
Thomas Zato - Santa Clara CA, US
Gianluca Filippini - Los Gatos CA, US
Reinhard R Steffens - Santa Clara CA, US

Dolby Laboratories Licensing Corporation - San Francisco CA

H04N 9/80

386248

Techniques for providing application tracks in a media data container are described. An application descriptor may be extracted from a coded bitstream. The coded bitstream comprises media data to be played by a media presentation system. The application descriptor identifies an application archive (i) that is retrievable by the media presentation system from one or more sources and (ii) that is required by the media presentation system at a set media time associated with the media data. While playing the media data, the media presentation system causes retrieving all of the application archive from the one or more sources before the set media time.

20100008419, Jan 14, 2010

Dec 19, 2008

12/339735

James Oliver NORMILE - Los Altos CA, US
Xiaojin SHI - Santa Cruz CA, US
Xiaosong ZHOU - San Jose CA, US
Gianluca FILIPPINI - Los Gatos CA, US
Ionut HRISTODORESCU - San Jose CA, US

APPLE INC. - Cupertino CA

H04N 7/32

37524015, 375E07243

Embodiments of the present invention provide systems, methods and apparatuses for generating forward, backward or bi-directional P frames. Prior to encoding a sequence of video frames, P frames within the video sequence can be reordered to include causal and/or non-causal references to one or more reference frames. This allows any block partition of a bi-directional P frame to include a single reference to a reference frame that is temporally displayed either before or after the bi-directional P frame. Compression and visual quality can therefore be improved. Hierarchical frame structures can be constructed using bi-directional P frames to better accommodate low complexity decoding profiles. Multilayered encoded video bitstreams can be generated based on the hierarchical frame structures and can include a first layer of anchor frames and one or more second layers that include bi-directional P frames that reference the anchor frames and/or any frame in any lower level layer.

20100246688, Sep 30, 2010

May 11, 2009

12/463871

Gianluca FILIPPINI - Los Gatos CA, US
Xiaosong ZHOU - Campbell CA, US
James Oliver NORMILE - Los Altos CA, US
Xiaojin SHI - Fremont CA, US
Ionut HRISTODORESCU - San Jose CA, US

Apple Inc. - Cupertino CA

H04N 7/12

37524026, 375E07076

Example embodiments of the present invention provide a method or device for coding source video. The method or device may provide for a segment of video frames from the source video, computing a noise map for the segment of the source video where the noise map is computed from differences among pixels selected from spatially-distributed sampling patterns in the segment, computing control parameter adjustments based on the noise map, and coding the selected segment of source video according to control parameters generated from a default coding policy and the control parameter adjustments, where the default coding policy includes default control parameters of the encoder.

20100246691, Sep 30, 2010

May 11, 2009

12/463913

Gianluca FILIPPINI - Los Gatos CA, US
Xiaosong ZHOU - San Jose CA, US
James Oliver NORMILE - Los Altos CA, US
Xiaojin SHI - Santa Cruz CA, US
Ionut HRISTODORESCU - San Jose CA, US

APPLE INC. - Cupertino CA

H04N 7/12

37524029, 375E07076

Embodiments of the present invention provides a method and device for processing a source video. The method and device may provide computing an artifact estimation from differences among pixels selected from spatially-distributed sampling patterns in the source video; filtering the source video to produce a filtered version of the source video, computing a blending factor based on the artifact estimation in the source video, and computing an output video by blending the source video and the filtered version of the source video based on the blending factor.

20110216162, Sep 8, 2011

Jan 4, 2011

12/984593

Gianluca Filippini - Los Gatos CA, US
Reinhard Steffens - Santa Clara CA, US
James Dougherty - Morgan Hill CA, US
Thomas Zato - Santa Clara CA, US

DOLBY LABORATORIES LICENSING CORPORATION - San Francisco CA

H04N 13/00
H04N 11/02

348 43, 3483841, 348E13001, 348E11006

Techniques for multi-view video format control are provided. In some embodiments, a display video format supported by a display panel is determined. A video format code is extracted from a coded bitstream in which a plurality of images is encoded in two or more source video formats. The video format code identifies a source video format in which a set of images in the plurality of images is encoded. A video format filter is selected to modify the set of images encoded in the source video format to generate another set of images encoded in the display video format. The other set of images encoded in the display video format is sent to the display panel.

20110216163, Sep 8, 2011

Mar 4, 2011

13/040449

James Dougherty - Morgan Hill CA, US
Thomas Zato - Santa Clara CA, US
Gianluca Filippini - Los Gatos CA, US

DOLBY LABORATORIES LICENSING CORPORATION - San Francisco CA

H04N 13/00

348 43, 348E07033, 348E13002

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.

20110221864, Sep 15, 2011

Mar 5, 2011

13/041363

Gianluca Filippini - Los Gatos CA, US
Reinhard Steffens - Santa Clara CA, US
James Dougherty - Morgan Hill CA, US
Thomas Zato - Santa Clara CA, US

DOLBY LABORATORIES LICENSING CORPORATION - San Francisco CA

H04N 13/00

348 43, 348E1306

Techniques for converting 3D images using alpha maps are described. A left-view image and a right-view image may be determined from media data received by a 3D display system. An alpha map specifying a plurality of operations for a plurality of locations that correspond to the first plurality of locations in the images may also be determined. The plurality of operations specified in the alpha map may be applied by the 3D display system to process the left-view and right-view images, and to generate, based on the left-view and right-view images, a third image in an appropriate 3D format.