Virtual Viewpoint Image Generation Method Selection
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Solution Overview
Problem
Existing technologies struggle to consistently generate virtual viewpoint images with high image quality, especially when the position of the virtual viewpoint changes, due to the dependence on a single rendering method that may not always optimize image quality based on camera arrangement and viewpoint position.
Innovation Solution
An image processing apparatus and method that dynamically select the most suitable image generation method based on the installation conditions of multiple cameras and the virtual viewpoint information, allowing for stable generation of high-quality virtual viewpoint images even when the virtual viewpoint position changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single rendering method is used for virtual viewpoint image generation, then the processing system is simple and easy to implement, but the image quality cannot be consistently maintained when virtual viewpoint position changes
Solution Approach 1:
The patent implements dynamic selection of rendering methods based on the virtual viewpoint position. The image generation unit switches between different rendering methods (e.g., image-based rendering, model-based rendering) according to the captured image data and three-dimensional shape data availability, allowing the system to adapt to changing viewpoint conditions and maintain consistent image quality.
Solution Approach 2:
The patent changes the parameter of rendering method selection based on the virtual viewpoint position and available data. By evaluating the position of the virtual viewpoint and the type of captured images or three-dimensional shape data, the system selects the appropriate rendering method, effectively using parameter changes to resolve the contradiction between simplicity and quality consistency.
2Manufacturing precision
If multiple rendering methods are prepared to handle different viewpoint positions, then image quality can be maintained, but the system complexity and processing overhead increase
Solution Approach 1:
The system dynamically selects from multiple rendering methods only when necessary, based on the virtual viewpoint position and data type. This dynamic approach maintains image quality by choosing the appropriate method while avoiding the constant overhead of processing with all methods, thus preserving processing efficiency.
Solution Approach 2:
The image generation unit autonomously determines the appropriate rendering method based on the virtual viewpoint position and available data, without requiring external intervention or complex coordination. This self-service mechanism reduces processing overhead by making autonomous decisions rather than requiring systematic evaluation of all rendering methods in every case.
3Adaptability or versatility
If the rendering method is fixed, then the processing system is simple and fast, but it cannot adapt to different camera arrangements and viewpoint positions
Solution Approach 1:
The patent makes the image generation system dynamic by enabling switching between different rendering methods based on virtual viewpoint position and data type. This dynamic capability allows the system to adapt to various camera arrangements and viewpoint positions while maintaining reasonable system complexity through automated selection logic.
Solution Approach 2:
The image generation unit is designed with multi-functionality to handle different rendering methods (image-based rendering, model-based rendering) within a single system. This universal design allows the system to adapt to different camera arrangements and viewpoint positions without requiring separate specialized systems, balancing adaptability with system complexity.
Data Source
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AI summary
An image processing apparatus that generates a virtual viewpoint image: obtains information related to installation of cameras for capturing images used for generating a virtual viewpoint image and viewpoint information related to a virtual viewpoint; determines based on the information related to installation of the cameras and the viewpoint information an image processing method to be used for generating a virtual viewpoint image; and generates the virtual viewpoint image corresponding to the virtual viewpoint by using the determined image processing method.