Image Processing Apparatus Preventing Shape Distortion via Transformation Degree Control
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Solution Overview
Problem
Existing image processing technologies face challenges in preventing images from transforming into indeterminate shapes during projection conversion, particularly due to factors like background reflections, feature point tracing errors, and parallax effects, which can lead to unnatural distortions and blurring in video correction processes.
Innovation Solution
An image processing apparatus that employs a processing unit to acquire provisional coefficients for projection conversion based on feature points, performs transformation degree analysis, and optimizes coefficients to ensure the transformation degree does not exceed a permitted threshold, thereby preventing image distortion. This involves a series of processes including provisional coefficient acquisition, polygon conversion, transformation degree calculation, and selection of optimal coefficients to maintain image integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If projection conversion is performed using provisional coefficients acquired from feature points, then blur correction in videos can be accomplished, but images may transform into indeterminate shapes due to feature point tracing errors and parallax effects
Solution Approach 1:
The patent performs preliminary projection conversion on a polygon having fixed points as vertices using provisional coefficients before actual image conversion. This preliminary action allows calculation of transformation degree and comparison with permitted values, enabling prevention of indeterminate shape transformation while maintaining blur correction effectiveness
Solution Approach 2:
The patent introduces a polygon with fixed points as vertices as an intermediary object between the original image and the final converted image. By performing projection conversion on this intermediary polygon and calculating its transformation degree, the system can determine whether to proceed with actual image conversion, thus preventing shape distortion while achieving blur correction
2Shape
If transformation degree calculation and determination processes are added to control image distortion, then image shape stability is improved, but processing complexity increases
Solution Approach 1:
The patent segments the projection conversion process into distinct stages: acquiring provisional coefficients, performing preliminary conversion on a polygon, calculating transformation degree, determining whether to proceed, and executing actual image conversion. This segmentation makes the complex process more manageable and systematic, reducing overall processing complexity while maintaining shape stability
3Shape
If multiple projection conversion attempts are made with different provisional coefficients to avoid indeterminate shapes, then image quality is improved, but processing time increases
Solution Approach 1:
The patent implements a self-service mechanism where the transformation degree calculation and determination process automatically evaluates whether provisional coefficients are appropriate. If the transformation degree exceeds permitted values, the system automatically acquires new provisional coefficients and retries, eliminating the need for manual intervention and reducing processing time through automated decision-making
Data Source
AI summary
A provisional coefficient acquirer of an image processing apparatus acquires provisional coefficients for projection conversion of an image, on the basis of feature points indicating features of the image. A polygon converter does projection conversion on a polygon having a plurality of fixed points as vertices, on the basis of the provisional coefficients acquired by the provisional coefficient acquirer. A transformation degree acquirer acquires a transformation degree indicating a magnitude of the transformation degree of the polygon from the pre-projection-conversion polygon and the post-projection-conversion polygon. A determiner determines whether the transformation degree acquired by the transformation degree acquirer exceeds a permitted transformation degree. When the determiner determines that the transformation degree does not exceed the permitted transformation degree, a projection converter does projection conversion on the image using as actual coefficients the provisional coefficients acquired by the provisional coefficient acquirer.