Road Surface 3D Detection for Distortion-Corrected Lamp Projection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle headlamps distort road surface images due to the stereoscopic shape of the projection surface, causing inaccuracies in projected images.
Innovation Solution
A lamp system that uses patterned light to detect the stereoscopic shape of a road surface, incorporating a light projecting device, sensor unit, and control unit to calculate and correct the three-dimensional shape for accurate image projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional headlamps project images directly onto the road surface, then the projection process is simple, but the projected image becomes distorted due to the stereoscopic shape of the road surface
Solution Approach 1:
The system performs preliminary detection of the road surface's three-dimensional shape using patterned light projection and sensor capture before the actual image projection. The control unit calculates the stereoscopic shape and determines correction parameters in advance, then applies these corrections to the image projection to compensate for anticipated distortions.
Solution Approach 2:
The system uses a feedback mechanism where the sensor unit captures the actual projection surface shape, the control unit processes this information to calculate three-dimensional shape data, and then uses this feedback to adjust and correct the image projection parameters, creating a closed-loop system that continuously optimizes projection accuracy.
2Measurement precision
If the headlamp system adds detection and correction functions to eliminate image distortion, then image projection accuracy improves, but the device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it controls the patterned light projection, processes sensor data to calculate three-dimensional shape information, determines correction parameters, and adjusts the image projection. This multi-functionality reduces the need for separate dedicated components for each function, thereby managing system complexity while achieving high measurement precision.
Solution Approach 2:
The patterned light serves as an intermediary tool to detect the road surface shape without requiring direct physical contact or complex sensing hardware. By projecting known patterns and analyzing their distortion on the surface, the system indirectly measures the three-dimensional shape with high precision using relatively simple optical components.
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
Enables non-distorted image projection by detecting and correcting for the stereoscopic shape of the road surface, ensuring accurate image representation.
Implementation Method 1
a light source that generates patterned light having a specific pattern and projects the patterned light onto a projection surface
Implementation Method 2
a camera that captures a pattern in which the patterned light is projected onto the projection surface to provide an image of the projection surface
Data Source
AI summary
A lamp system capable of detecting a stereoscopic shape of a road surface includes: a light projecting device including a light source that generates patterned light having a specific pattern and projects the patterned light onto a projection surface; a sensor unit including a camera that captures a pattern in which the patterned light is projected onto the projection surface to provide an image of the projection surface; and a control unit that determines a three-dimensional shape of the projection surface based on an output of the sensor unit, and controls an output of the light projecting device according to the determined three-dimensional shape of the projection surface.