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Determining 3D Flow Fields via Multi-camera Light Field Imaging
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Parallel multi-view polygon rasterization for 3D light field display.

Yanxin Guan, Xinzhu Sang, Shujun Xing

    Optics Express
    |November 13, 2020
    PubMed
    Summary
    This summary is machine-generated.

    Generating images for 3D light field displays is inefficient. A new multi-view polygon rasterization (PMR) algorithm enables real-time 3D image generation using parallel processing and GPU acceleration.

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    Area of Science:

    • Computer Graphics
    • Display Technology
    • Image Processing

    Background:

    • Three-dimensional (3D) light field displays necessitate numerous regularly spaced camera images for 3D image synthesis.
    • Sequential image generation for these displays is computationally inefficient due to redundant rendering operations across viewpoints.
    • Existing 3D image generation algorithms are not optimized for the demands of light field display image creation.

    Purpose of the Study:

    • To introduce a novel, highly parallel multi-view polygon rasterization (PMR) algorithm for efficient 3D multi-view image generation.
    • To address the inefficiencies of traditional single-viewpoint computer graphics techniques in generating images for light field displays.
    • To enable real-time generation of high-quality 3D images for advanced display technologies.

    Main Methods:

    • Developed a multi-view polygon rasterization (PMR) algorithm leveraging the coherence of triangular rasterization calculations across multiple viewpoints.
    • Derived screen-space rasterization algorithms, including primitive setup, plane function, and barycentric coordinate interpolation, optimized for parallel processing.
    • Designed and implemented a hierarchical soft rendering pipeline utilizing Graphics Processing Units (GPUs) for accelerated computation.

    Main Results:

    • The proposed PMR algorithm effectively utilizes viewpoint coherence to minimize redundant calculations.
    • The implemented GPU-based rendering pipeline successfully processed 3D object data.
    • Verification using multiple image sets confirmed the algorithm's capability to achieve real-time generation of correct 3D light field images.

    Conclusions:

    • The multi-view polygon rasterization (PMR) algorithm offers a significant improvement in the efficiency of 3D multi-view image generation.
    • The parallel processing approach, combined with GPU acceleration, is well-suited for the demands of real-time light field display content creation.
    • This method provides a viable solution for generating the extensive image data required by 3D light field displays.