Single-Eye Stereo Imaging Aperture Control
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Solution Overview
Problem
Existing single-eye stereoscopic imaging devices often fail to achieve an appropriate stereoscopic effect due to varying subject distances, leading to inconsistent parallax amounts that can result in either excessive or inadequate depth perception.
Innovation Solution
A single-eye stereoscopic imaging device that includes a single imaging optical system, an aperture with adjustable values, and a control unit that determines distance information distribution across images to adjust the parallax amount within a predetermined range, using histogram analysis and pixel-level calculations to optimize aperture settings for improved stereoscopic effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-eye stereoscopic imaging device captures images through different regions of a single imaging optical system, then a stereoscopic effect can be achieved, but the parallax amount varies with subject distance leading to inconsistent stereoscopic quality
Solution Approach 1:
The patent applies dynamics by making the aperture value adjustable and controllable based on subject distance. The control unit dynamically changes the aperture value according to the distance information of the subject, allowing the system to adapt to different shooting scenarios and maintain appropriate parallax amounts regardless of subject distance
Solution Approach 2:
The patent changes the aperture value parameter based on subject distance information. By adjusting this physical parameter, the system controls the parallax amount to fall within an appropriate range, resolving the inconsistency caused by varying subject distances
2Device complexity
If the aperture value is fixed, then the device structure is simple, but the parallax amount cannot be controlled leading to excessive or inadequate depth perception
Solution Approach 1:
The patent implements feedback by using distance information acquiring units to measure subject distance, then using this information to control the aperture value. The control unit receives distance information and adjusts the aperture accordingly, creating a closed-loop system that ensures appropriate parallax amounts
Solution Approach 2:
The system performs self-adjustment by automatically controlling the aperture value based on measured distance information without requiring manual intervention. The control unit autonomously determines the appropriate aperture setting based on the subject distance
Data Source
AI summary
After AE/AF/AWB operation, a subject distance is calculated for each pixel, and a histogram which shows the distance distribution is created based thereon. The class with the highest frequency which is the peak at the side nearer than the focus distance is searched based on the histogram and a rectangular area Ln which includes pixels which have a subject distance within the searched range is set. The average parallax amount Pn which is included in the rectangular area Ln is calculated and it is confirmed whether Pn is within a range of parallax amounts a and a−t1. In a case where Pn is not within a range of parallax amounts a and a−t1 which is set in advance, the aperture value is adjusted such that Pn is within the range of the parallax amounts a and a−t1.