Polygon Region Label Positioning for Video Analysis Clarity
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Solution Overview
Problem
When analyzing video captured by network cameras, displaying identification information for polygonal regions set on the screen can lead to unclear correspondence due to non-uniform shapes, making it difficult to recognize the association between regions and their information.
Innovation Solution
An image processing apparatus and method that specifies the longest side of a polygonal region and displays information at its middle point, ensuring better visibility and clarity of the region's identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If identification information is displayed at a fixed position for each polygonal region, then the display structure is simple, but the correspondence between the region and identification information becomes unclear due to non-uniform shapes
Solution Approach 1:
The patent applies local quality by adapting the display position of identification information to the local characteristics of each polygonal region. Instead of using a fixed position for all regions, the system calculates and displays information at the center of each region's longest side, making the display strategy locally optimized for each region's shape and orientation.
Solution Approach 2:
The patent changes the parameter of display position from a fixed constant to a dynamic value determined by geometric calculations. By computing the center of the longest side for each polygonal region, the system adapts the display position parameter to match the specific geometry of each region, ensuring clear correspondence regardless of shape variations.
2Loss of information
If identification information is displayed at the center of the longest side of each polygonal region, then the correspondence clarity is improved, but the calculation complexity increases
Solution Approach 1:
The patent segments the problem of identifying polygonal regions by first determining individual geometric properties (longest side, center position) for each region independently. This segmentation allows the system to handle complex polygons through a systematic breakdown into manageable calculation steps, reducing overall computational complexity.
Solution Approach 2:
The patent performs preliminary geometric calculations to identify the longest side and its center before displaying identification information. By pre-computing these positional parameters, the system avoids complex real-time calculations during the display phase, improving efficiency while maintaining correspondence clarity.
Data Source
AI summary
A specifying unit specifies a longest side among sides of a polygonal region set on an image captured by an image capturing unit. A display control unit causes a display unit to display the image on which the polygonal region and information concerning the polygonal region are superimposed. The display control unit causes the display unit to display the information at a position based on the longest side specified by the specifying unit.