Optical Motion Sensing via Multi-Region Surface Texture Detection
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Solution Overview
Problem
Conventional optical sensors require multiple sensors to detect different motions of small or tiny motion objects, leading to increased circuit costs and complex arrangements.
Innovation Solution
A single image sensor array is used to capture and generate an image frame, selecting non-overlapping image regions to detect motions of surface features without object identification, enabling precise motion detection across multiple regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple optical sensors are used to detect different motions of surface textures, then motion detection accuracy is improved, but circuit cost increases and sensor arrangement becomes complex
Solution Approach 1:
The patent divides the image frame into multiple non-overlapping image regions, allowing a single optical sensor to detect motions in different regions simultaneously. This segmentation approach replaces the need for multiple sensors while maintaining the capability to detect multiple surface texture motions, thus reducing device complexity while preserving measurement precision.
2Measurement precision
If multiple optical sensors are used to detect different motions of small or tiny objects, then motion detection capability is improved, but circuit cost increases
Solution Approach 1:
The patent enables a single optical sensor to perform multiple detection functions by processing different image regions within the same frame. Instead of requiring separate sensors for each motion detection task, the system makes one sensor universal by allowing it to detect multiple surface texture motions simultaneously through region-based processing, thereby reducing the quantity of components and circuit cost.
3Measurement precision
If object identification is performed to detect surface texture motions, then detection accuracy is improved, but processing time increases
Solution Approach 1:
The patent extracts and detects only the motion information from image regions without performing full object identification. By taking out just the necessary motion detection function and separating it from the more time-consuming object identification process, the system achieves accurate motion detection while significantly reducing processing time.
Data Source
AI summary
A method of an optical sensor includes: using a single image sensor array of the optical sensor to capture and generate an image frame; selecting a plurality of image regions within the image frame, the plurality of image regions being not overlapped; detecting a plurality of motion results of the plurality of image regions respectively and individually based on images of the plurality of image regions without performing object detection; and determining a plurality of motions of surface feature images respectively within the plurality of image regions according to the plurality of motion results of the plurality of image regions.