Stereo Vision Imagery Axle Turning for Aspect Ratio Flexibility
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Solution Overview
Problem
Current image capturing devices can only produce 2D images, limiting the ability to capture 3D images with varying aspect ratios, such as switching from landscape to portrait mode, as existing stereo vision reconstruction methods are restricted by the aspect ratio of the image sensor and cannot reconstruct 3D images when the camera is turned from a horizontal to a vertical position.
Innovation Solution
The method involves turning the imagery axles of the first and second lens units in a stereo vision apparatus to a specific angle θ, allowing the capture of images with different aspect ratios, which are then processed to construct 3D images using a stereo vision reconstruction processor, enabling flexible aspect ratio changes from landscape to portrait and vice versa.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the camera uses a fixed aspect ratio image sensor for stereo vision reconstruction, then the reconstruction accuracy is maintained, but the ability to capture images in different aspect ratios (landscape to portrait) is lost
Solution Approach 1:
The patent applies the dynamics principle by enabling the imagery axle to rotate dynamically between horizontal and vertical positions. The rotation mechanism allows the lens units to change their orientation relative to the image sensor, transforming the fixed aspect ratio limitation into a dynamic adjustable system. This enables the camera to switch between capturing images in different aspect ratios while maintaining stereo vision reconstruction capability through coordinate transformation.
2Ease of operation
If the camera turns from horizontal to vertical position to capture portrait images, then the aspect ratio changes, but the stereo vision reconstruction fails due to inability to obtain two different parallaxes
Solution Approach 1:
The patent introduces coordinate transformation as an intermediary mathematical tool that bridges the gap between the rotated lens units and the fixed image sensor. This intermediary transformation allows the system to interpret images captured in vertical position (portrait mode) and convert them into the coordinate system required for stereo vision reconstruction, thereby maintaining 3D image capability while enabling vertical orientation capture.
Solution Approach 2:
The patent applies parameter changes by modifying the coordinate system parameters through rotation matrices. When the lens units rotate to vertical position, the system transforms the image coordinates using rotation parameters (angle θ) to convert them back to the horizontal reference frame. This parameter transformation enables the system to maintain consistent stereo vision reconstruction across different camera orientations.
3Adaptability or versatility
If multiple image sensors are used to capture images in different aspect ratios, then the aspect ratio flexibility is improved, but the device complexity increases
Solution Approach 1:
The patent applies universality by designing a single image sensor that serves multiple functions through the rotation mechanism. Instead of requiring separate image sensors for horizontal and vertical capture, the system uses one sensor and rotates the lens units to achieve different aspect ratios. This multi-functional approach eliminates the need for multiple sensors while maintaining the ability to capture both landscape and portrait images with stereo vision capability.
Data Source
AI summary
An imagery axle turning method for stereo vision and an apparatus thereof. The method turns an imagery axle of a stereo vision apparatus to capture images, and constructs a 3D image from the captured 2D images. The imagery axle turning method is realized by rotating the imagery axles of the first lens unit and second lens unit to an angle θ, so as to have different aspect ratios for the first image and second image. Thereby, the 3D image formed from the stereo vision reconstruction steps can achieve a user's expectation of capturing images with an appropriate aspect ratio. This invention also provides specific stereo vision apparatus corresponding to various applications by the imagery axle turning method.