In-Cabin 3D Imaging Using Multi-Frequency CW Light Correlation
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Solution Overview
Problem
Existing camera systems for vehicular applications face challenges in producing accurate 3D images due to the adverse effects of ambient lighting and space constraints within the vehicle.
Innovation Solution
A method and system for creating 3D images by modulating a continuous wave light wave in at least three different frequencies, capturing multiple image beams, and correlating location measurements to produce high-accuracy 3D images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional camera systems are used for 3D imaging in vehicular applications, then the system structure is simple, but the measurement precision deteriorates due to ambient lighting effects and space constraints
Solution Approach 1:
The patent segments the light wave into multiple frequency components by modulating a continuous wave light source with at least three different frequencies. This segmentation allows the system to capture multiple image beams at different frequencies and correlate their location measurements to achieve high-accuracy 3D imaging while maintaining a relatively simple camera module structure without requiring multiple separate cameras or complex mechanical components
Solution Approach 2:
The patent changes the frequency parameter of the light wave to solve the measurement precision problem. By modulating the continuous wave light source with multiple frequencies and capturing image beams at these different frequencies, the system can correlate location measurements across frequencies to eliminate ambient lighting interference and achieve high-accuracy location measurement without increasing device complexity
2Measurement precision
If multiple image beams at different frequencies are captured and correlated, then the location measurement accuracy improves, but the processing time increases
Solution Approach 1:
The patent applies preliminary action by pre-modulating the continuous wave light source with multiple frequencies before capturing the image beams. This allows the system to capture all necessary frequency components simultaneously or in rapid succession, and then correlate the location measurements in a structured manner, reducing the overall processing time compared to sequential capture methods while maintaining high location measurement accuracy
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 method and system achieve high accuracy in location measurement for 3D images captured under long-range conditions and dimly-lit ambient lighting, overcoming the limitations of conventional systems.
Implementation Method 1
modulating, by way of an illumination source, a continuous wave (CW) light wave to an image module, the CW light wave modulating in at least three different frequencies
Implementation Method 2
receiving, by way of the image module, at least three image beams, each of the at least three image beam containing a content of a moving object captured in at least a different frequency
Data Source
AI summary
A method of processing images captured within a motor vehicle is disclosed. The method comprises modulating, by way of an illumination source, a continuous wave (CW) light wave to an image module and receiving, by way of the image module, at least three image beams, each of the at least three image beam containing a content of an interior of a motor vehicle captured in at least a different frequency. An image processing unit executes the step of correlating by way of an image processing unit, a location measurement of the at least three image beams captured by the image module, wherein each of the three image beams is captured in a different frequency and creating a three-dimensional (3D) image in response to the location measurement correlated. A system, computer program product and a computer-readable medium is also disclosed.