Moving Ball Image Sensing Using Predicted Analysis Regions
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Solution Overview
Problem
Existing image sensing methods for moving balls in sports require complex processes to set a region of interest, are prone to inaccuracies, and demand high computational resources due to the need to analyze entire images at high frame rates.
Innovation Solution
An image analysis method that sets a partial analysis object area based on the predicted ball position, calculates the ball's movement range, and projects this area onto the camera's view to detect the ball's position in subsequent frames, reducing the need to analyze entire images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the entire image is analyzed at high frame rates to detect the moving ball, then the sensing accuracy is improved, but the computational resource requirements and processing time increase significantly
Solution Approach 1:
The patent divides the image processing task into two stages: first, a coarse analysis of the entire image to identify a region of interest containing the ball; second, a focused analysis of only that specific region for precise ball detection. This segmentation allows the system to maintain high detection accuracy while significantly reducing the computational load by avoiding full-image analysis at every frame.
Solution Approach 2:
The patent applies partial action by analyzing only the necessary portion of the image (the region of interest) rather than the entire image. By identifying and focusing computational resources on the specific area where the ball is located, the system achieves accurate ball detection with reduced processing requirements compared to analyzing all pixels in the full image frame.
2Reliability
If complex calculations are performed to predict ball movement and set the region of interest, then the ball detection coverage is improved, but the process complexity increases
Solution Approach 1:
The patent performs preliminary action by using simple initial calculations based on previous ball positions to predict and set the region of interest before detailed ball detection. This preliminary estimation of ball location allows the system to focus subsequent analysis on the correct area without requiring complex real-time calculations during the detection phase, thereby improving reliability while managing process complexity.
Data Source
AI summary
The present invention is to provide an image analysis method for sensing moving ball, and sensing device using same significantly improving the speed of image processing by performing image analysis by applying an analysis object area set immediately before each acquired image to the current image according to a method that setting an analysis object area, which is a partial area, without analyzing the entire image in analyzing an image for sensing a moving ball in sports with balls, detecting the ball within the set analysis object area, calculating the physical quantity of the ball movement, and setting another analysis object area to include the position where the ball will appear on the image to be analyzed based on the position of the ball detected on the image being analyzed.