Motion Analysis Device Displacement Compensation
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Solution Overview
Problem
Existing techniques for capturing and inspecting moving objects face challenges due to variations in capturing timing, which affect the precision of detecting motion in image processing, as the response times of sensors and cameras introduce delays and fluctuations, leading to inconsistencies in image analysis.
Innovation Solution
An image processing system that includes a representation selection unit, a displacement analysis unit, and a reference selection unit to calculate and compensate for displacement between images, allowing for precise analysis of object motion by selecting appropriate reference images based on calculated displacement amounts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor and camera are used to capture moving objects, then motion detection is enabled, but variation in capturing timing occurs due to sensor response time fluctuations
Solution Approach 1:
The patent applies preliminary action by calculating the displacement amount between the captured image and reference image before selecting the reference image. The displacement calculation unit computes the displacement based on the relationship between the captured image and each reference image, and this pre-calculated displacement information is then used to select the most appropriate reference image that compensates for timing variations.
Solution Approach 2:
The patent implements feedback by using the calculated displacement amount as a selection criterion for choosing the reference image. The system continuously monitors the displacement between captured and reference images, and this feedback information guides the selection of reference images that best match the current captured image, thereby compensating for timing variations in the sensor and camera system.
2Productivity
If images are captured at different timings to analyze moving objects, then motion analysis is possible, but position variation in images occurs due to timing differences
Solution Approach 1:
The patent applies parameter changes by selecting reference images based on displacement amount, which is a parameter that quantifies the positional difference between captured and reference images. By changing the selection criterion from simple timing-based selection to displacement-based selection, the system achieves better position consistency in the images used for motion analysis.
3Ease of operation
If sensor trigger signals are used to control camera timing, then synchronized capture is achieved, but output timing variation of the sensor causes capturing timing variation
Solution Approach 1:
The patent introduces an intermediary approach by using displacement calculation as a mediating step between the captured image and reference image selection. Instead of directly relying on sensor trigger signals for timing synchronization, the system calculates the displacement amount as an intermediary parameter that bridges the timing gap, allowing for more accurate reference image selection that compensates for sensor output timing variations.
Data Source
AI summary
An image processing device 1 selects, from among images in which an object to be sensed is captured, a representation image which is a reference for processing. In a state of the representation image being selected, the image processing device carries out a comparative analysis between the representation image and the image which differs from the image which has been selected as the representation image, and thereby computes a degree of displacement between the representation image and the image. From among the images which have been assigned as reference images, the image processing device selects the reference image which will be used in a process of analyzing the movement of the object to be sensed, on the basis of the degree of displacement which has been computed.