Stereo Packing Identification for Celestial Sphere Image Reproduction
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Solution Overview
Problem
Existing packing schemes for celestial sphere images are inadequate for stereoscopic image transmission, as they are designed for normal 2-dimensional images, and there is a need for schemes that can effectively identify and optimize the packing of stereoscopic celestial sphere images.
Innovation Solution
A generation device and method that generates stereo packing identification information to identify the type of packing for region images of a celestial sphere image, allowing for efficient packing and reproduction of stereoscopic images, including options for side-by-side, top & bottom, and arbitrary positioning of left-eye and right-eye images, and includes information for rendering and projecting these images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional 2D packing schemes are used for celestial sphere images, then the packing process is simple, but the packing scheme is insufficient for stereoscopic image transmission and cannot effectively identify or optimize stereo image packing
Solution Approach 1:
The packing identification information is segmented into multiple distinct components: stereo indication type, packing type, and region information. This segmentation allows the system to convey complex stereo packing details through structured, modular data elements that can be processed independently, resolving the contradiction between adaptability and complexity by organizing information in a systematic way.
Solution Approach 2:
The patent extends traditional 2D packing schemes by introducing stereo dimension identification. The stereo indication type and packing type fields add a third dimension of information (stereoscopic vs. conventional) to the existing 2D packing framework, enabling the system to handle both conventional and stereoscopic images within a unified structure without requiring completely separate processing paths.
2Productivity
If stereo packing identification information is generated for each track, then transmission efficiency is improved, but the device complexity increases due to track-by-track processing requirements
Solution Approach 1:
The packing identification information is generated in advance during the encoding process and embedded into each track before transmission. This preliminary action ensures that reproduction devices receive pre-processed information ready for immediate use, eliminating the need for complex real-time analysis and improving transmission efficiency while keeping device complexity manageable through standardized pre-processing.
Solution Approach 2:
Each track independently contains its own packing identification information, making the data self-descriptive and self-sufficient. This self-service approach allows reproduction devices to process each track autonomously without requiring complex inter-track coordination, thereby improving transmission efficiency while maintaining relatively simple device architecture.
3Measurement precision
If detailed stereo packing identification information is provided, then rendering capabilities are improved, but the loss of information increases due to the complexity of managing multiple packing parameters
Solution Approach 1:
The packing identification information structure serves multiple functions simultaneously: it identifies stereo indication type, determines packing type, provides region information for mapping, and enables reproduction device compatibility. This multi-functionality reduces information loss by consolidating what could be separate data elements into a unified structure where each component contributes to multiple aspects of stereo image processing.
Solution Approach 2:
The packing identification information acts as an intermediary between the encoded stereo video data and the reproduction device. This intermediary structure translates complex stereo packing details into standardized, device-agnostic parameters that preserve information integrity while enabling broad compatibility, thereby reducing information loss during transmission and processing.
Data Source
AI summary
There is provided a generation device, an identification information generation method, a reproduction device, and an image reproduction method capable of identifying a packing scheme. Stereo packing identification information for identifying a scheme of packing is generated with regard to a plurality of region images of a celestial sphere image packed in a packed frame. In a case in which packing is performed by one of a plurality of packing schemes, stereo packing identification information indicating a packing method can be generated, a projected frame can be generated easily on the basis of the identification information, and the projected frame can be rendered. The present technology can be applied to a case in which a celestial sphere stereoscopic image is transmitted to be reproduced on a reception side.