3D Image Metadata Generation for VR Region Specification

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Solution Overview

Problem

Current technologies face challenges in efficiently generating metadata to specify regions of 3D images, particularly in VR environments, where precise information transmission is required to display specific parts of 3D images accurately.

Innovation Solution

A method and apparatus for generating metadata that includes information representing a region of a 3D image, specifically using spherical coordinates and projection techniques like equirectangular projection to convert 3D images into 2D, allowing for efficient transmission and display of specific regions within VR devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional 3D image metadata generation methods are used, then complete image information is transmitted, but data transmission volume increases and efficiency decreases

Engineering Contradiction:

Improvemetadata generation efficiencyVSAvoiddata transmission volume

Core Design Contradiction:

ProductivityVSQuantity of substance

Solution Approach 1:

The patent extracts only the necessary region information from the complete 3D image metadata. Instead of transmitting metadata for the entire spherical 3D image, the system identifies and transmits only the metadata corresponding to the specific region of interest that needs to be displayed on the VR device, significantly reducing data transmission volume while maintaining productivity.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent segments the spherical 3D image metadata into different regional portions. By dividing the complete image metadata into selectable regions, the system can transmit only the relevant segment corresponding to the current viewport or region of interest, improving transmission efficiency and reducing data volume.

Inventive Principle:

Principle #1Segmentation

2Measurement precision

If spherical projection is used to represent 3D images, then complete spatial information is preserved, but image distortion increases

Engineering Contradiction:

Improvespatial information accuracyVSAvoidimage distortion

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by using spherical projection only for the specific region of interest rather than for the entire spherical image. By limiting the projection application to only the necessary local area, the system maintains spatial information accuracy where needed while minimizing distortion in the displayed region.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

Instead of projecting the entire spherical image and then selecting regions, the patent inverts the approach by first identifying the region of interest in the spherical coordinate system and then applying projection only to that specific region. This reversal minimizes the affected area and reduces overall distortion.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS11223813B2Method and apparatus for generating metadata for 3D images

Publication Date: 2022.01.11 SAMSUNG ELECTRONICS CO LTD

AI summary

Disclosed are a method and apparatus for generating metadata for a three dimensional (3D) image. The method includes generating metadata for an image rendered to be shaped as a sphere and transmitting the generated metadata, wherein the metadata includes information representing a region of the image.