Polarized Volumetric Imaging for More Accurate 3D Model Capture
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Solution Overview
Problem
In volumetric capture technology, high-luminance illumination devices within the angle of view often cause optical phenomena like flare, ghost, and halation, leading to reduced accuracy of generated 3D models.
Innovation Solution
Utilize a system with multiple polarization illumination devices and imaging devices that emit and receive polarized light from different positions, with differing polarization directions to reduce the impact of illumination within the angle of view, thereby suppressing optical phenomena and enhancing 3D model accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high-luminance illumination devices are placed within the angle of view to ensure sufficient lighting, then illumination intensity is improved, but optical phenomena such as flare, ghost, and halation occur, reducing measurement precision
Solution Approach 1:
The patent changes the polarization state parameter of light by introducing polarizing filters in both illumination and imaging devices. The illumination device emits polarized light, and the imaging device captures polarized reflected light, using polarization state as a new parameter to distinguish illumination light from other light sources, thereby eliminating optical phenomena while maintaining high luminance
Solution Approach 2:
The polarizing filter acts as an intermediary element that modifies the light properties. By placing polarizing filters in both the illumination path and imaging path with specific polarization directions, the system mediates the interaction between illumination light and imaging, allowing the illumination device to remain within the angle of view without causing optical phenomena
2Measurement precision
If multiple imaging devices are arranged to surround the subject to capture images from various directions, then measurement precision is improved, but the illumination device easily fits within the angle of view, causing optical phenomena
Solution Approach 1:
The patent introduces polarization state as a new parameter to differentiate between illumination light and other light sources in the scene. By controlling the polarization direction of emitted light and selecting appropriate polarization directions for capture, the system can identify and exclude illumination light that would otherwise cause optical phenomena like flare and ghost
Solution Approach 2:
Polarizing filters serve as intermediary components that enable the imaging device to selectively respond to polarized reflected light while ignoring direct polarized illumination light. This intermediary mechanism allows multiple imaging devices to be positioned close to the illumination device without suffering from optical phenomena
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed system effectively suppresses optical artifacts, allowing for more accurate extraction of silhouettes and textures, resulting in improved 3D model generation accuracy.
Implementation Method 1
a plurality of polarization illumination devices that includes a polarizer and irradiates the object with polarized light obtained by transmitting light emitted from a light emitting unit through the polarizer
Implementation Method 2
a plurality of polarization imaging devices that includes a polarizer and generates the captured images by using polarized light obtained by transmitting light from outside through the polarizer
Data Source
AI summary
There is provided an imaging processing system and a three-dimensional (3D) model generation method capable of generating a more accurate 3D model. The imaging processing system generates the 3D model of an object by using a plurality of captured images obtained by imaging the object, and includes a plurality of polarization illumination devices that includes a polarizer and irradiates the object with polarized light obtained by transmitting light emitted from a light emitting unit through the polarizer from positions different from each other, and a plurality of polarization imaging devices that includes a polarizer and generates the captured images by using polarized light obtained by transmitting light from outside through the polarizer at positions different from each other where the object and at least one of the polarization illumination devices are within an angle of view, in which a polarization direction of the polarizer of the polarization imaging device is different from a polarization direction of the polarizer of the polarization illumination device.