Dual Optical Imaging Device Interference Cancellation
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Solution Overview
Problem
Existing imaging devices face challenges in accurately recognizing subject motion due to interference between signal components with different imaging characteristics, leading to increased processing costs and manufacturing loads without complete removal of interference.
Innovation Solution
An imaging device with a dual optical system and directivity sensor that calculates and extracts true movement vectors by determining probabilities based on brightness signals and feature points, allowing for accurate subject motion recognition even with interference, without the need for costly countermeasures like light shielding bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image processing is used to remove interference influence, then interference removal degree increases, but processing costs and manufacturing costs increase
Solution Approach 1:
The patent replaces physical interference mitigation methods (such as light shielding bands) with an information-processing approach. By using image processing algorithms to analyze and subtract interference patterns from the captured images, the system achieves effective interference removal without requiring additional physical components, thereby reducing manufacturing costs while maintaining or improving interference removal degree.
Solution Approach 2:
The patent changes the approach from physical parameter modification (adding physical barriers) to signal parameter processing. By adjusting image processing parameters such as interference pattern recognition thresholds, subtraction weights, and analysis algorithms, the system optimizes interference removal effectiveness without incurring additional manufacturing costs, resolving the contradiction between removal degree and cost.
2Object-affected harmful factors
If light shielding bands are used to prevent crosstalk, then interference is prevented, but manufacturing costs increase
Solution Approach 1:
The patent substitutes mechanical light shielding bands with a computational approach. The image processing unit analyzes the captured images to identify and remove crosstalk patterns through algorithmic interference subtraction, eliminating the need for physical light shielding components and thereby reducing manufacturing costs while maintaining effective crosstalk prevention.
Solution Approach 2:
The patent extracts and removes the interference components from the captured images through image processing. By identifying crosstalk patterns and subtracting them from the original images, the system achieves effective crosstalk prevention without requiring physical extraction or blocking mechanisms, thus avoiding the manufacturing costs associated with light shielding bands.
3Measurement precision
If high sensitivity motion detection is used, then motion detection accuracy improves, but false image detection increases
Solution Approach 1:
The patent introduces image processing as an intermediary step between image capture and motion detection. By first removing interference patterns through processing and then performing motion detection on the cleaned images, the system achieves high sensitivity motion detection without the false detections that would result from analyzing raw images containing interference patterns.
Solution Approach 2:
The patent performs preliminary image processing to remove interference patterns before conducting motion detection. This preliminary action of cleaning the images ensures that subsequent high-sensitivity motion detection algorithms operate on purified data, thereby improving detection accuracy while minimizing false detections caused by interference.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate recognition and tracking of subject motion while reducing costs associated with interference mitigation, effectively coping with interference in imaging systems.
Implementation Method 1
an imaging unit that includes an imaging optical system including a first optical system and a second optical system that are provided in different areas and have different imaging characteristics
Implementation Method 2
a directivity sensor including a plurality of pixels that include photoelectric conversion elements arranged in a two-dimensional shape
Data Source
AI summary
An imaging device, an imaging method, a program, and a non-transitory recording medium capable of easily coping with interference and suppressing an increase in cost due to countermeasures for preventing the interference such as providing a light shielding band are provided. In an imaging device according to an aspect of the present invention, an imaging unit includes an imaging optical system including a first optical system and a second optical system provided in a different area and having different imaging characteristics, and a directivity sensor, and first and second true movement vectors in first and second images are extracted on the basis of first and second possibilities of movement vectors calculated according to first and second movement vectors that are detected movement vectors of a subject in first and second images obtained via the first and second optical systems.