Rearview Image Luminance Control Using Moving-Body Position
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Solution Overview
Problem
Existing rearview systems in vehicles fail to properly control luminance, leading to reduced visibility of moving bodies due to improper luminance adjustment, especially at positions where headlights are located, as they rely on predicted luminance correction or correction at fixed positions.
Innovation Solution
A control apparatus that adjusts luminance based on the actual position of moving bodies in the image, using sensors to measure luminance and vehicle position, and adjusts the luminance of the rearview image accordingly to improve visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If luminance correction is made based on predicted luminance or at fixed positions, then the control process is simplified, but the visibility of moving bodies decreases due to improper luminance control
Solution Approach 1:
The patent applies dynamics by transitioning from static, fixed-position luminance correction to dynamic, moving-body-tracking luminance control. The control apparatus continuously tracks the position of moving bodies (vehicles) in the rearview image and adjusts luminance correction based on their actual locations rather than predetermined positions. This enables the system to adapt to changing scene conditions while maintaining relatively simple control logic through automated position detection and tracking.
Solution Approach 2:
The patent implements feedback by using the detected position information of moving bodies to continuously adjust luminance correction. The control apparatus acquires position information of vehicles in the rearview image, uses this feedback to determine appropriate luminance correction values for those specific positions, and applies the correction dynamically. This closed-loop approach ensures luminance control follows the actual moving bodies rather than relying on predictions or fixed patterns.
2Ease of manufacture
If luminance correction is applied at fixed positions or based on headlight location only, then the correction method is simpler to implement, but the luminance control accuracy at proper positions deteriorates
Solution Approach 1:
The patent applies local quality by implementing position-specific luminance correction tailored to each detected moving body. Rather than applying uniform correction across the entire image or only at headlight positions, the system identifies each vehicle's location and applies appropriate luminance correction locally at that position. This allows different parts of the image to have different correction characteristics based on the actual content and lighting conditions at each location.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting luminance correction parameters based on the detected position and characteristics of moving bodies. The control apparatus modifies luminance correction values according to the specific position, size, and lighting conditions of each detected vehicle, rather than using fixed correction parameters. This enables adaptive luminance control that responds to changing scene parameters while maintaining implementation feasibility through automated parameter adjustment.
Data Source
AI summary
A control apparatus is to be moved with a moving apparatus and configured to control luminance of an image to be displayed on a display unit acquired by an imaging unit. The control apparatus comprising a memory storing instructions, and a processor configured to execute the instructions to obtain information about a position of a moving body in the image, and determine the luminance of the image based on the position of the moving body.