Tracking Region Motion Ratio for Object Detection Drift
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Solution Overview
Problem
Conventional object tracking methods in images face challenges such as delayed determination to suspend or end tracking due to 'drift' phenomena and errors in correspondence between tracking information and detection results, leading to low accuracy in tracking processing.
Innovation Solution
An information processing apparatus that includes a tracking unit, an identification unit, a derivation unit to calculate the ratio of a motion region within a tracking region, and a determination unit to decide whether to continue tracking based on this ratio, thereby improving the accuracy of tracking continuation determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If conventional image feature matching is used for tracking, then tracking can continue when object is partially hidden, but tracking reliability drops and drift occurs when object disappears from image frame
Solution Approach 1:
The patent introduces a motion region as an intermediary element between the tracking object and the background. By detecting motion regions within the tracking region and comparing their area ratios across frames, the system can determine whether the tracking object has disappeared without relying on image feature matching reliability. This intermediary motion detection mechanism resolves the contradiction by providing a more reliable disappearance detection method that works even when the object is hidden or has similar features to the background.
2Reliability
If tracking continues when object disappears, then no drift occurs immediately, but tracking accuracy deteriorates and determination is delayed
Solution Approach 1:
The patent replaces the conventional image feature matching mechanism with a motion-based detection mechanism. Instead of relying on complex image feature comparison that delays determination, the system uses simple motion region detection and area ratio calculation. This substitution of the detection mechanism enables rapid and accurate determination of object disappearance, resolving the contradiction between maintaining tracking accuracy and avoiding determination delay.
3Measurement precision
If object detection is used to determine tracking continuation, then detection accuracy improves, but errors occur when detected object segments or connects with other objects
Solution Approach 1:
The patent extracts only the motion region information from the detected object, ignoring the detailed segmentation and connection issues of conventional object detection. By focusing solely on the presence and area of motion regions within the tracking region, the system avoids the reliability problems caused by object segmentation or connection errors. This extraction of essential motion information resolves the contradiction between detection accuracy and correspondence reliability.
Data Source
AI summary
An information processing apparatus includes a tracking unit configured to identify a tracking region including a tracking object in an image, an identification unit configured to identify a motion region inside the tracking region in the image, a derivation unit configured to derive a ratio of the motion region relative to the tracking region, and a determination unit configured to determine whether to continue tracking the tracking object based on the derived ratio.