Light Field Surface Editing via Occluded Pixel Projection
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Solution Overview
Problem
Current light field editing techniques are cumbersome and time-consuming due to the need to navigate through multiple views to select and edit surfaces, especially when dealing with occluded areas, as they are designed for 2D image editing and struggle with the multidimensional nature of light fields.
Innovation Solution
A method and apparatus that allow users to select and edit surfaces in a light field using a single reference view, projecting occluded pixels into this view for consistent editing without navigating through all views, and enabling common 2D image editing tools to be applied, such as changing color, texture, or illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If users navigate through multiple views to select and edit surfaces in light field, then editing completeness is improved, but operation complexity and time consumption increase
Solution Approach 1:
The patent projects occluded pixels from multiple views into a single reference view by synthesizing information across different spatial dimensions. This transforms the multidimensional navigation problem into a two-dimensional editing task on the reference view, where occluded regions are automatically reconstructed from other views' data, eliminating the need for users to manually navigate through multiple views while maintaining editing completeness
Solution Approach 2:
The system creates a synthesized copy of occluded pixel information by projecting data from multiple views into the reference view. This virtual copying of pixel values from different perspectives allows users to edit surfaces as if all views were visible simultaneously, achieving complete surface editing without actual multi-view navigation
2Manufacturing precision
If users navigate through multiple views to ensure consistency in light field editing, then editing accuracy is improved, but time consumption increases
Solution Approach 1:
The system performs preliminary projection of occluded pixels from multiple views into the reference view before the user begins editing. This pre-computation of pixel correspondence and value projection ensures that all necessary information is already integrated into the reference view, allowing users to edit with full accuracy knowledge without subsequent time-consuming consistency checks across multiple views
Solution Approach 2:
The reference view serves as an intermediary that integrates information from multiple views. By projecting occluded pixel data through this intermediary representation, the system automatically ensures consistency across all views during editing, eliminating the need for users to manually verify consistency across multiple views while maintaining editing accuracy
3Ease of operation
If light field editing tools are designed for 2D images, then ease of use is improved, but adaptability to light field data deteriorates
Solution Approach 1:
The system creates a two-dimensional projected representation of occluded light field data in the reference view, which can be manipulated using standard 2D image editing tools. This virtual copy preserves the multidimensional light field information while presenting it in a 2D format that existing tools can handle, bridging the gap between simple tool interfaces and complex light field data structures
Solution Approach 2:
The system transforms light field data parameters by projecting three-dimensional occluded pixel information into two-dimensional reference view coordinates. This parameter transformation allows conventional 2D editing tools to operate on light field data by changing the spatial representation parameters while maintaining the underlying light field semantics through the projection relationship
Data Source
Figure 1(a)~1(b)
Figure 2~5
Figure 3A~3C
AI summary
A method for selecting at least one surface in a light field is disclosed. Such a light field is associated with multiple views corresponding to different view points of a same scene. The method comprises: - displaying (S402) one of the multiple views as a reference view; - selecting (S403) at least one surface in the reference view; - identifying (S404) a set of pixels belonging to the selected surface, which are occluded in the reference view but visible in at least one of the multiple views; - projecting (S405) the set of pixels into the reference view, on the basis of a value of the pixels of the set in the view or views in which they are visible, in order to form an upgraded reference view; - displaying (S406) the upgraded reference view; - updating (S407) said selected surface in said upgraded reference view.