Multi-pinhole Camera Mask Pattern for Distance-Adaptive Privacy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image identification systems using multi-pinhole cameras struggle to maintain privacy protection regardless of the distance between the camera and the subject due to inadequate settings of pinhole intervals, leading to incomplete blurring and potential recognition of subject images.
Innovation Solution
A multi-pinhole camera with a mask pattern featuring pinholes at different intervals, where the interval between the first and second pinholes allows for a specific degree of superimposition at closer distances, and the interval between the second and third pinholes allows for another degree of superimposition at farther distances, ensuring the subject remains unrecognizable across varying distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single pinhole interval is used in the mask pattern, then the device structure is simple, but the degree of superimposition cannot be maintained within the predetermined range for subjects at different distances, compromising privacy protection
Solution Approach 1:
The mask pattern applies different pinhole intervals (first interval L1 and second interval L2) to different regions of the mask. The first interval L1 is designed for subjects at farther distances, while the second interval L2 is designed for subjects at closer distances. This local differentiation ensures that the degree of superimposition remains within the predetermined range for privacy protection regardless of the subject's distance from the camera.
2Reliability
If the pinhole interval is set for closer distances, then privacy is protected for nearby subjects, but the degree of superimposition falls outside the predetermined range for farther subjects, allowing them to be recognized
Solution Approach 1:
The mask pattern is segmented into multiple pinhole groups with different intervals. The first pinhole group has interval L1 optimized for farther distances, while the second pinhole group has interval L2 optimized for closer distances. This segmentation allows the system to handle multiple distance ranges effectively, ensuring privacy protection across varying subject distances.
3Reliability
If the pinhole interval is set for farther distances, then privacy is protected for distant subjects, but the degree of superimposition falls outside the predetermined range for closer subjects, allowing them to be recognized
Solution Approach 1:
Different regions of the mask pattern have different pinhole intervals tailored to specific distance ranges. The first interval L1 with larger spacing is positioned to handle farther subjects, while the second interval L2 with smaller spacing handles closer subjects. This local optimization ensures that each region of the mask contributes to privacy protection for its intended distance range.
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
This configuration ensures that the subject remains visually unrecognizable regardless of the distance from the camera, enhancing privacy protection by creating effective blurring through controlled superimposition of multiple images, even when the privacy cannot be completely protected by a single interval setting.
Implementation Method 1
a degree of superimposition of two subject images captured through the first pinhole and the second pinhole to be within a predetermined range
Data Source
AI summary
An interval between a pinhole and a pinhole is set to a first interval at which a degree of superimposition of subject images captured through the corresponding pinholes falls within a predetermined range when an image of a subject located at a distance less than a predetermined distance from the multi-pinhole camera is captured. An interval between the pinhole and a pinhole is set to a second interval narrower than the first interval at which a degree of superimposition of subject images captured through the corresponding pinholes falls within a predetermined range when an image of the subject located at a distance equal to or more than the predetermined distance from the multi-pinhole camera is captured.