Dual Camera Luminance Chrominance Separation for Resolution
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Solution Overview
Problem
Conventional cameras with color filter arrays face limitations in spatial resolution and size due to the need for multiple lenses, leading to increased size and cost, while reducing the image sensor size results in a loss of pixel resolution.
Innovation Solution
A dual camera system comprising a first camera without a color filter array and a second camera with a color filter array, where the first camera captures luminance and the second camera captures chrominance, with an image processor correcting parallax and occlusion by correlating and adjusting image data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional camera with color filter array is used, then color capture capability is achieved, but spatial resolution and linear resolution are reduced
Solution Approach 1:
The invention divides the imaging function into two separate cameras: one dedicated to capturing luminance (brightness) information with high spatial resolution, and another dedicated to capturing chrominance (color) information. This segmentation allows each camera to be optimized for its specific function, achieving high linear spatial resolution in the luminance channel while maintaining sufficient chrominance resolution through the second camera's color filter array.
2Adaptability or versatility
If multiple lenses are used to achieve both luminance and chrominance capture, then color capture capability is improved, but device size increases
Solution Approach 1:
The invention merges the luminance capture function and chrominance capture function into a single dual-camera system. By positioning two cameras close together (within 10mm separation), the system achieves both high-resolution luminance imaging and color imaging without requiring a large form factor, thus maintaining compact device size while providing versatile color capture capability.
3Volume of moving object
If image sensor size is reduced to decrease camera size, then device size is reduced, but pixel resolution is lost
Solution Approach 1:
The invention transitions from a single-camera system where reducing sensor size directly reduces resolution, to a dual-camera system where resolution is achieved through spatial arrangement and functional division. The high linear spatial resolution is achieved in the luminance channel through the first camera's optimized sensor, while the second camera provides chrominance information, allowing the system to maintain high effective resolution without requiring a large sensor size in either individual camera.
Data Source
AI summary
A user device includes a dual array camera in which a first camera includes a first image sensor without a color filter array to capture luminance, and a second camera includes a second image sensor with a color filter array to capture chrominance.