On-Board Camera Brightness Detection for Sidewalk Navigation
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Solution Overview
Problem
Existing techniques for adjusting image brightness in vehicle surroundings captured by on-board cameras primarily focus on overall brightness adjustment, which does not provide user-convenient information on specific brightness conditions, such as shaded or lit areas, limiting user comfort and safety.
Innovation Solution
A system comprising a server and on-board device that captures images of vehicle surroundings, detects brightness information based on image capture date and location, and sends this information to a mobile terminal, allowing users to navigate more comfortably and safely by identifying shaded or lit areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If overall brightness adjustment is applied to captured images, then the general visibility is improved, but specific brightness information (shaded or lit areas) is not provided to users
Solution Approach 1:
The patent segments the captured image into multiple regions (shaded areas and lit areas) and processes each region separately. The image processing unit divides the image based on brightness distribution, identifying distinct zones with different illumination characteristics. This segmentation allows the system to preserve and transmit specific brightness information for each region rather than applying uniform adjustment to the entire image.
Solution Approach 2:
The patent applies different processing and adjustment strategies to different regions of the image based on their local brightness characteristics. Shaded areas and lit areas are identified and handled differently, with the system providing location information specific to each region. This local quality approach ensures that users receive tailored brightness information for specific areas rather than generalized overall brightness data.
2Ease of operation
If brightness information is extracted and transmitted for all regions, then user convenience is improved, but data transmission volume and processing load increase
Solution Approach 1:
The patent extracts only the essential brightness information from the captured images - specifically identifying and transmitting location data for shaded areas and lit areas. Rather than transmitting entire images or comprehensive pixel-level brightness data, the system extracts key regional characteristics and transmits only this condensed information. This extraction approach maintains user convenience by providing useful brightness guidance while significantly reducing data transmission volume.
3Measurement precision
If image processing is performed to detect brightness regions, then accuracy of brightness information is improved, but processing time and computational resources increase
Solution Approach 1:
The patent applies partial action by focusing image processing efforts only on detecting brightness regions rather than analyzing every pixel in detail. The system identifies shaded and lit areas using efficient algorithms that scan for brightness transitions and regional patterns, rather than performing exhaustive analysis on the entire image. This approach achieves sufficient measurement precision for navigation purposes while minimizing processing time and computational resource consumption.
Data Source
AI summary
A server, an on-board device, a vehicle, a non-transitory storage medium storing a program, and a method for providing information are provided. The server includes circuitry configured to: receive information on an image capture date and time and an image capture location from an on-board device that is configured to capture an image of surroundings of a vehicle and produces the captured image, the surroundings including a sidewalk; store brightness information of the sidewalk on the image capture date and time, the brightness information being detected based on the captured image and the image capture location; and send the brightness information to a mobile terminal.