Passage Detection Apparatus with Segmented Object Regions
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Solution Overview
Problem
Existing passage detection methods in image analysis struggle to accurately determine when an object has crossed a designated boundary line and may notify users at different times than intended, failing to account for flexible setting conditions.
Innovation Solution
A detection apparatus and method that allows flexible setting of conditions for passage detection by accepting designation of a position or partial region in an object region within an image, enabling precise determination of when a moving object has passed a set line, using a graphical user interface for user input and processing units for image analysis and communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If passage detection is performed using only boundary line overlap detection, then the detection method is simple, but it cannot detect objects that have gone beyond the boundary line and the timing may differ from user expectations
Solution Approach 1:
The object region is segmented into multiple partial regions (first partial region and second partial region) along the movement direction. The boundary line is divided into multiple segments. This segmentation allows the system to detect passage at different stages: when the object enters the first partial region, when it overlaps the boundary line, and when it exits the second partial region, thereby improving detection accuracy without excessive complexity
Solution Approach 2:
Different portions of the object region are assigned different detection functions. The first partial region detects entry into the boundary line area, the second partial region detects exit, and the boundary line itself serves as the reference for overlap detection. This local differentiation enables precise control over detection timing and accuracy for different phases of object movement
2Measurement precision
If the detection timing is based on boundary line overlap, then the detection is objective, but the notification timing may not match user expectations for when an object has passed
Solution Approach 1:
The system dynamically adjusts detection timing based on the object's movement state and position. Instead of using a fixed boundary line overlap criterion, the system continuously monitors the object's progression through the segmented regions and adjusts the detection moment to align with user expectations - notifying when the object has effectively 'passed' the boundary line, which may be before or after the exact center overlap point
Solution Approach 2:
The system changes the detection parameters dynamically based on the object's movement characteristics. By monitoring the object's position, speed, and trajectory, the system adjusts the detection threshold and timing parameters to optimize both objective accuracy and user-friendly notification timing, allowing flexible adaptation to different movement scenarios
Data Source
AI summary
A setting apparatus for making a setting to detect that a moving object in an image has passed a line set in the image accepts designation of one of a position and a partial region in an object region in the image, and makes a setting to detect that the designated position or partial region in the object region of the moving object in the image has passed the line set in the image.