Enhanced Object Detection with Multi-Exposure Imaging
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Summary
Problems
Existing object detection systems prioritize detection accuracy for surrounding objects over adhering matter, leading to suboptimal detection of raindrops due to inappropriate exposure settings, which compromise the detection accuracy of both objects and adhering matter.
Innovation solutions
An object detection apparatus with a light illumination unit and imaging unit having different exposure settings for capturing frames, allowing for enhanced detection accuracy of both distant photographic subjects and foreign matter attached to a light transmissive member by using multiple imaging frames with varying exposure amounts.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If separate capturing frames are used for detecting surrounding objects and adhering matter, then the detection accuracy for both targets is improved, but the frame rate is reduced due to increased capturing burden
Why choose this principle:
The patent merges the detection of surrounding objects and adhering matter into a single capturing frame by using an imaging sensor with multiple light receiving areas. This allows simultaneous detection of both targets without requiring separate capturing frames, thus maintaining the original frame rate while improving detection accuracy for both targets.
Principle concept:
If separate capturing frames are used for detecting surrounding objects and adhering matter, then the detection accuracy for both targets is improved, but the frame rate is reduced due to increased capturing burden
Why choose this principle:
The imaging sensor is designed with multi-functionality to perform both surrounding object detection and adhering matter detection within the same capturing frame. The first and second light receiving areas enable the sensor to handle multiple detection tasks simultaneously, eliminating the need for separate capturing frames and preserving frame rate.
Application Domain
Data Source
AI summary:
An object detection apparatus with a light illumination unit and imaging unit having different exposure settings for capturing frames, allowing for enhanced detection accuracy of both distant photographic subjects and foreign matter attached to a light transmissive member by using multiple imaging frames with varying exposure amounts.
Abstract
An object detection apparatus includes a light illumination unit that emits illuminating light; an imaging unit that captures a first image of distant photographic subjects by detecting lights from the photographic subjects, captures a second image of foreign matter attached to a monitoring area by detecting the illuminating light reflected from the foreign matter, and generates an image frame; a target detection unit that detects a detection target among the distant photographic subjects based on the first image; a foreign matter detection unit that detects the foreign matter based on the second image; and an exposure amount change unit that changes an exposure amount of the imaging unit. The target detection unit detects the detection target using plural imaging frames with different exposure amounts. The foreign matter detection unit detects the foreign matter using the imaging frame other than the imaging frame with the greatest exposure amount.