Stereoscopic Camera Parallax Control via Zoom Angle Threshold
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Solution Overview
Problem
When using a zoom lens in telephoto mode, it is difficult to set the parallax in an appropriate range for stereoscopic image pickup, leading to excessive parallax and discomfort during image viewing.
Innovation Solution
A stereoscopic image pickup apparatus with two imaging sections, each equipped with a zoom lens, and a zoom controller that adjusts the angles of view and an image selection section to ensure that image signals are output within a comfortable parallax range by switching between dual-channel and single-channel outputs based on the angle of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the zoom lens is used in telephoto mode with a small angle of view, then the magnification is improved, but the parallax becomes excessively large causing viewer discomfort
Solution Approach 1:
The patent implements dynamic switching between two imaging modes based on the angle of view. When the zoom lens is in telephoto mode with angle of view below the threshold, the system automatically switches from dual-imaging-section mode to single-imaging-section mode, making the switching timing and mode adjustable to adapt to different shooting conditions and prevent excessive parallax
Solution Approach 2:
The patent changes the operational parameters of the imaging system by introducing a threshold value for the angle of view. When this parameter falls below the threshold, the system modifies its operation by using only one imaging section instead of two, thereby controlling the parallax to remain within acceptable ranges for comfortable viewing
2Shape
If the angle of view is reduced for telephoto shooting, then the magnification is improved, but the depth of field becomes shallow making it difficult to control parallax
Solution Approach 1:
The system dynamically adjusts the imaging configuration based on the angle of view. When telephoto mode with reduced angle of view is detected (below threshold), the system switches to single-imaging-section operation, making the switching timing and mode adjustable to adapt to different shooting conditions and maintain precise parallax control
Solution Approach 2:
The patent employs feedback control by monitoring the angle of view parameter and automatically adjusting the imaging mode accordingly. The system compares the current angle of view against a predetermined threshold and switches between dual-section and single-section modes to maintain optimal parallax control precision
Data Source
AI summary
A stereoscopic image pickup apparatus includes a first imaging section, a second imaging section, a zoom controller, and an image selection section. The first imaging section includes a zoom lens. The second imaging section includes a zoom lens. The zoom controller controls angles of view of the zoom lenses of the first imaging section and the second imaging section. The image selection section outputs image signals, which are output by the first imaging section and the second imaging section, as image signals of two channels constituting a stereoscopic image when the angles of view controlled by the zoom controller are equal to or greater than a predetermined value. In addition, the image selection section outputs image signals, which are based on the image signal output by either the first imaging section or the second imaging section, as the image signals of two channels constituting the stereoscopic image when the angles of view controlled by the zoom controller are less than the predetermined value.