Pixel Beam Data Generation for Light-Field Integration
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Solution Overview
Problem
Current light-field acquisition technologies lack a standard method for supporting the acquisition and transmission of multi-dimensional information, resulting in diverse formats for light-field data across different cameras, making it difficult to process and integrate data from various optical systems.
Innovation Solution
A computer-implemented method and device that generate data representative of a volume occupied by a set of rays of light passing through a pupil of an optical system, allowing for the imaging of pixel beams through a second optical system, enabling the creation of parametrized output images and facilitating post-processing operations like refocusing and mixing of light-field contents from different acquisition systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different camera systems use their own proprietary file formats for light-field data, then each system can optimize for its specific hardware configuration, but it becomes difficult to process and integrate data from various optical systems
Solution Approach 1:
The patent introduces an intermediary coordinate system (y, z, θy, θz) that acts as a universal mediator between different camera systems. This intermediate representation allows data from various optical systems to be transformed into a common format, enabling integration and processing without requiring system-specific handling. The intermediary coordinates serve as a bridge that reconciles different proprietary formats with a standardized processing framework.
2Ease of manufacture
If light-field data is represented in multiple different formats (raw images, sub-aperture images, epipolar images), then specific processing tasks can be optimized for each format, but it complicates the integration and processing of data across different formats
Solution Approach 1:
The patent creates a universal coordinate representation that can serve multiple processing functions simultaneously. The (y, z, θy, θz) coordinate system is designed to be multi-functional, supporting various light-field processing operations (refocusing, perspective changes, depth extraction) without requiring conversion to format-specific representations. This universal format maintains the versatility needed for different processing tasks while eliminating format compatibility issues.
Solution Approach 2:
The patent transitions from traditional 2D image plane coordinates to a 4D light-field coordinate system (y, z, θy, θz) that explicitly represents spatial and angular dimensions. This dimensional expansion allows the system to capture and process complete light-field information in a unified framework, enabling operations that were previously format-dependent to be performed directly on the standardized representation.
3Device complexity
If a standardized representation method is implemented across all camera systems, then data integration becomes easier, but it may reduce the ability to optimize for specific hardware configurations
Solution Approach 1:
The patent segments the light-field data representation into distinct coordinate components (y, z for position; θy, θz for angle) that can be independently processed. This segmentation allows the standardized framework to handle the essential light-field structure uniformly while permitting system-specific optimizations in how each component is measured or utilized. The modular coordinate structure enables hardware-specific implementations to map onto the standardized representation without losing optimization benefits.
Data Source
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AI summary
There are several types of plenoptic devices having their proprietary file format. At present there is no standard supporting the acquisition and transmission of multidimensional information for an exhaustive over-view of the different parameters upon which a light-field depends. As such acquired light-field data for different cameras have a diversity of formats. The notion of pixel beam, which represents a volume occupied by a set of rays of light in an object space of an optical system of a camera is thus introduced. The method according to the invention enables to provide data representative of a collection of pixel beams describing a first optical system that is agnostic since these data are obtained by imaging the collection of pixel beams through a second optical system. Such data representative of a collection of pixel beams enable the generation of parametrized output images from which post-processing.