公开(公告)号：US20240292034A1

公开(公告)日：2024-08-29

申请号：US18422423

申请日：2024-01-25

Applicant: APPLE INC.

Inventor： Leo BARNES ,  Davide CONCION ,  David W. SINGER ,  Dimitri PODBORSKI

IPC: H04N19/70 ,  G06T7/90 ,  G06T9/00

CPC classification number: H04N19/70 ,  G06T7/90 ,  G06T9/00

Abstract: Embodiments of the present disclosure provide a HEIF-based encapsulation technique that is optimized for delivery of small images over communication networks, such as the Internet. In such applications, the coded image content may have a small content payload, the spatial area of the image is small as compared to the range of image sizes that HEIF otherwise supports, and the image may contain only a limited number of representations. According to these embodiments, overhead signaling for these images may be condensed into a distinct box that is distinguishable from other types of HEIF boxes by its character code. The box may be a self-contained unit that contains both the overhead signaling and the coded content of the image itself.

公开(公告)号：US20250063182A1

公开(公告)日：2025-02-20

申请号：US18772408

申请日：2024-07-15

Applicant: APPLE INC.

Inventor： Alexandros TOURAPIS ,  Dimitri PODBORSKI ,  Jungsun KIM ,  Leo BARNES ,  Davide CONCION

IPC: H04N19/30 ,  H04N19/186 ,  H04N19/59

Abstract: Techniques are disclosed for representing video and images with full resolution color component information and yet remain compatible with legacy processing systems that process images with reduced resolution information. The new image representation may include a scalable format that consists of a base layer, coded to match expectations of a legacy coder. The new image representation also may include additional enhancement layer(s) that enable upconversions of reduced-resolution color components to higher resolutions. The image representation not only provides power savings in decoding full-resolution representations but it also provides other benefits, such as scalable and power aware decoding.