Image Processing Method Correcting Perspective Deformation via Distance-Based Magnification
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Solution Overview
Problem
Current image processing technologies fail to completely eliminate perspective deformation distortion in electronic devices, such as smartphones and tablets, which affects the quality of images captured using wide-angle or telephoto lenses, and are costly due to the need for high-quality optical glass.
Innovation Solution
An image processing method that uses distance information from pixels to adjust image magnifications based on optical characteristics, allowing for pixel position adjustments to correct perspective deformation without high-quality optical glass, and modifies the perspective effect of images shot with one lens type to match another, such as changing a wide-angle lens effect to a telephoto lens effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high-quality optical glass and optimized lens group design are used to reduce perspective deformation, then image quality is improved, but manufacturing cost increases significantly
Solution Approach 1:
The patent replaces the mechanical/optical system (high-quality lens group and optical glass) with a software-based image processing system. The method acquires distance information for different pixel regions, calculates magnification values based on perspective relationships, and adjusts pixel positions through computational algorithms, thereby eliminating the need for expensive optical components while achieving perspective deformation correction
Solution Approach 2:
The patent changes the approach from physical parameter optimization (optical glass quality, lens group design) to digital parameter processing (distance information, magnification values, pixel coordinates). By transforming the correction mechanism into a computational process involving multiple parameter calculations and adjustments, the system achieves the same effect without high-cost materials
2Area of stationary object
If a wide-angle lens is used to capture a wider range at close distance, then the shooting range is improved, but perspective deformation increases causing distorted proportions
Solution Approach 1:
The patent applies different magnification values to different pixel regions based on their distance from the lens. By dividing the image into multiple regions with different distance characteristics and applying localized magnification adjustments, the system corrects proportion distortion in specific areas (such as the face) while preserving the wide shooting range capability
3Shape
If a telephoto lens with large focal length is used to reduce perspective deformation, then proportion distortion is reduced, but the shooting distance must be very far losing depth and details
Solution Approach 1:
The patent introduces dynamic adjustment of magnification values based on real-time distance information for different pixel regions. This allows the system to adaptively correct perspective deformation without requiring a fixed shooting distance, enabling close-up shots with accurate proportions by computationally adjusting the magnification of different image regions according to their spatial relationships
Data Source
AI summary
An image processing method and an electronic device are disclosed. The image processing method includes obtaining distance information of at least one portion of pixels in an image acquired by the image acquiring unit, the distance information indicating a distance from the image acquiring unit to a shot object to which each pixel among the at least one portion of pixels corresponds; determining magnifications of the at least one portion of pixels based on the distance information and optical characteristics of the image acquiring unit; and adjusting the image based on the magnifications of the at least one portion of pixels.