Imaging Device Dual-Sensor Motion Detection
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Solution Overview
Problem
Conventional imaging devices face difficulties in detecting subject motion at high speeds, leading to inaccurate image capture and timing issues.
Innovation Solution
An imaging device comprising a first sensor, a position information acquiring unit, a second sensor for motion information, and an acquisition condition generating unit that controls the first sensor to capture images based on generated acquisition conditions, utilizing an event-driven sensor to extract motion information and predict optimal capture times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If images are generated using the imaging element that captures the subject, then the imaging operation can be performed in a standard mode, but it becomes difficult to detect the motion of the subject when the subject moves at high speed
Solution Approach 1:
The patent divides the imaging function into two separate imaging elements: a first imaging element for standard imaging and a second imaging element specifically for motion detection. This segmentation allows each element to be optimized for its specific function, enabling accurate motion detection even when subjects move at high speeds that would exceed the frame rate of a single imaging element
Solution Approach 2:
The patent introduces an image processing unit as an intermediary that receives images from both imaging elements and integrates the motion information. This intermediary processing enables the system to combine standard imaging data with high-speed motion detection data, achieving accurate motion detection and timing for high-speed subjects
2Loss of time
If the subject moves faster than the frame rate of the imaging element, then standard imaging cannot capture the subject at desired timing, but prediction-based capture still cannot obtain sufficient accuracy
Solution Approach 1:
The patent uses the second imaging element to preliminarily detect subject motion and predict future positions before the actual capture timing. By continuously monitoring motion trends in advance and calculating predicted positions, the system can determine optimal capture timing even for subjects moving faster than the imaging frame rate, achieving precise timing without relying solely on prediction from standard imaging
3Measurement precision
If a single imaging element is used for both standard imaging and motion detection, then the device structure remains simple, but sufficient accuracy cannot be obtained for high-speed motion detection
Solution Approach 1:
The patent segments the imaging system into specialized components: a first imaging element for standard imaging, a second imaging element for motion detection, and dedicated image processing units for each. This segmentation improves measurement precision for high-speed motion detection while organizing the increased device complexity into functional modules that work together systematically
Data Source
AI summary
A motion of a subject is detected, and an image is captured at timing desired by a user. An imaging device includes a first sensor, a position information acquiring unit, a second sensor, an acquisition condition generating unit, and a control unit. The first sensor acquires object information that is information regarding an object. The position information acquiring unit acquires position information that is information instructing the position of the object at the time of acquiring the object information. The second sensor acquires motion information that is information regarding the motion of the object. The acquisition condition generating unit generates an acquisition condition of the object information on the basis of the acquired position information and the acquired motion information. The control unit performs control to cause the first sensor to acquire the object information on the basis of the generated acquisition condition.