Adjustable Stereoscopic Camera Spacing for Close-Range 3D Imaging
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Solution Overview
Problem
Conventional portable electronic devices with 3D image capture capabilities face challenges in forming a 3D image when the subject is close, due to significant image differences between the left and right image capture modules, which are fixed at a standard distance.
Innovation Solution
A portable electronic device with a subject distance estimator and an image difference control mechanism that adjusts the distance between the first and second image capture modules based on the subject's distance, using a mechanical structure, electric motor, and controller, allowing for dynamic spacing to control image differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the first and second image capture modules are spaced apart by a fixed distance, then the device structure is simple and stable, but the image difference becomes too significant when capturing close subjects, preventing proper 3D image formation
Solution Approach 1:
The patent applies the dynamics principle by making the distance between the first and second image capture modules adjustable rather than fixed. The image capture modules can dynamically change their spacing based on the estimated subject distance, allowing the system to adapt to different capturing scenarios while maintaining proper image difference for 3D image formation.
Solution Approach 2:
The patent applies parameter changes by modifying the inter-module distance parameter according to the subject distance. When the subject is close, the modules are positioned closer together; when the subject is far, the modules are positioned farther apart. This dynamic parameter adjustment ensures optimal image difference control for various capturing conditions.
2Measurement precision
If the distance between image capture modules is increased to capture far subjects, then the field of view is improved, but the image difference becomes insufficient for close subjects
Solution Approach 1:
The patent applies feedback by using a subject distance estimator to continuously monitor the distance to the captured subject and feed this information back to the image difference control mechanism. Based on this feedback, the system automatically adjusts the module distance to maintain optimal image difference, ensuring precise 3D image formation across varying subject distances without manual intervention.
Data Source
AI summary
A portable electronic device with 3D image capture capability and an image difference control method thereof are disclosed. The portable electronic device comprises a first and a second image capture module, a subject distance estimator and an image difference control mechanism. The first and second image capture modules are operative to capture a first image and a second image, respectively, to form a 3D image. Before image capturing, the subject distance estimator estimates a subject distance indicating how far a subject to be captured is, and the image difference control mechanism adjusts a distance between the first and second image capture modules based on the subject distance by moving at least one of the first and second image capture modules. In this manner, the image difference between the first and second images is properly controlled to perfectly form the 3D image.