Cylindrical Projection Rendering for Tubular Organ Visualization
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Solution Overview
Problem
Current medical imaging technologies face challenges in effectively visualizing the interior of tubular organs, particularly in identifying polyps and understanding the correspondence between perspective projective images and exfoliated pictures, which hinders accurate diagnosis and treatment.
Innovation Solution
A method using cylindrical projection to generate exfoliated pictures and calculate relation information between hypothetical cylinders and cross-section images, allowing for the synthesis of images that clearly depict the internal structure and position of tubular organs, thereby enhancing visualization and diagnosis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If perspective projective method is used to view interior of tubular organ, then interior visualization is improved, but polyp detection reliability deteriorates
Solution Approach 1:
The patent segments the tubular organ visualization into two complementary views: perspective projective images for general interior overview and exfoliated pictures for detailed surface inspection. This segmentation allows each view to optimize for its specific function, with the exfoliated picture providing a flattened, comprehensive view of the entire interior surface that eliminates blind spots.
Solution Approach 2:
The patent introduces an intermediary mapping relationship between perspective projective images and exfoliated pictures. This mapping serves as a mediator that connects the two different visualization modes, allowing users to correlate features between views and improving polyp detection reliability by enabling cross-validation of findings.
2Reliability
If exfoliated picture display is used to view inner wall surface, then polyp detection is improved, but association with cross-section images deteriorates
Solution Approach 1:
The patent introduces a mapping image as an intermediary that bridges the exfoliated picture and cross-section images. This mapping image contains correspondence information that links positions in the exfoliated view to corresponding locations in cross-sectional views, enabling users to understand spatial relationships without losing polyp detection capabilities.
Solution Approach 2:
The patent adds a new dimensional layer of information through the mapping image, which provides correspondence data between different visualization modes. This additional dimension allows users to navigate and correlate information across multiple views without losing the benefits of the exfoliated picture display.
3Loss of information
If multiple images are displayed side by side for comparison, then diagnostic information is improved, but understanding of position correspondence deteriorates
Solution Approach 1:
The patent uses mapping images as intermediaries that are displayed alongside the exfoliated pictures and cross-section images. These mapping images provide visual guides that show position correspondence, making it easier for users to associate features across multiple views while maintaining access to comprehensive diagnostic information from all images.
Data Source
AI summary
A rendering method for generating relation information of image data of three or more dimensions. The rendering method includes preparing an exfoliated picture generated by projecting voxels using cylindrical projection method with a center line, preparing position data of a cross-section and a cross-section image representing the cross-section of the image data, creating a hypothetical cylinder including position data using the center line, calculating relation information associating the hypothetical cylinder and the cross-section using position data of the hypothetical cylinder and position data of the cross-section, and synthesizing the relation information with at least one of the exfoliated picture and the cross-section image to generate a synthesized image.