18046861. Video-Based Point Cloud Compression with Variable Patch Scaling simplified abstract (Apple Inc.)

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Video-Based Point Cloud Compression with Variable Patch Scaling

Organization Name

Apple Inc.

Inventor(s)

Jungsun Kim of San Jose CA (US)

Khaled Mammou of Danville CA (US)

Alexandros Tourapis of Los Gatos CA (US)

Video-Based Point Cloud Compression with Variable Patch Scaling - A simplified explanation of the abstract

This abstract first appeared for US patent application 18046861 titled 'Video-Based Point Cloud Compression with Variable Patch Scaling

Simplified Explanation

The patent application describes a system that can compress and decompress attribute and spatial information for volumetric visual content. The system includes an encoder and a decoder.

  • The encoder converts a 3D representation of the visual content into a 2D image-based representation.
  • The encoder can scale the patches in 2D space independently of any scaling in 3D space.
  • Auxiliary information is used to identify 2D scaled or unscaled patches in an image frame, map the patches into 3D space, and adjust for any scaling factors applied at the encoder.

Potential applications of this technology:

  • Video streaming: This technology can be used to compress and transmit volumetric visual content efficiently, allowing for better streaming quality and reduced bandwidth requirements.
  • Virtual reality (VR): The system can compress VR content, making it easier to transmit and store, and enhancing the overall VR experience.
  • Medical imaging: Volumetric visual content, such as CT scans or MRI images, can be compressed and transmitted more efficiently, enabling faster and more accurate diagnosis.

Problems solved by this technology:

  • Efficient compression: The system addresses the challenge of compressing volumetric visual content while maintaining its quality and reducing the required storage and bandwidth.
  • Scalability: The encoder can scale the patches in 2D space independently, allowing for better adaptation to different display sizes and resolutions.
  • Mapping and adjustment: The auxiliary information helps in accurately mapping the patches from 2D to 3D space and adjusting for any scaling factors applied during compression.

Benefits of this technology:

  • Improved efficiency: The compression and decompression process allows for efficient transmission and storage of volumetric visual content.
  • Enhanced user experience: The technology enables better quality streaming, more immersive VR experiences, and faster medical imaging analysis.
  • Flexibility: The system can adapt to different display sizes and resolutions, making it suitable for various applications and devices.


Original Abstract Submitted

A system comprises an encoder configured to compress attribute information and/or spatial information for volumetric visual content and/or a decoder configured to decompress compressed attribute and/or spatial information for the volumetric visual content. The encoder is configured to convert a 3D representation of the visual volumetric content into a 2D image based representation. The encoder is further configured to scale the patch in 2D space independent of any scaling in 3D space. Auxiliary information is signaled for use in identifying 2D scaled or unscaled patches in an image frame, mapping the patches into 3D space, and adjusting for any scaling factors applied at the encoder.

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