3D Image Surface Color Assignment via Segmented Volume Rendering
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Solution Overview
Problem
Current three-dimensional image processing techniques face challenges in displaying surface data with accurate color representation, especially when multiple objects are mixed, as they either lack color differentiation or require computationally intensive volume rendering for entire images, making it difficult to adjust colors and maintain high-speed display.
Innovation Solution
A three-dimensional image processing apparatus and method that generates surface data and performs a volume rendering process on specific sections of the image to acquire color information, allowing for color assignment and display, while enabling easy color adjustments by modifying the color template used in the volume rendering process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If volume rendering process is performed for the entire three-dimensional image, then color information and object boundaries are accurately displayed, but arithmetic processing load increases and display speed decreases
Solution Approach 1:
The patent divides the three-dimensional image into multiple two-dimensional sections corresponding to each polygon surface. Instead of performing volume rendering on the entire 3D image, the processing is segmented into separate 2D sections, each processed independently to extract color information that is then mapped to corresponding polygon surfaces.
Solution Approach 2:
The patent extracts only the necessary color information from specific two-dimensional sections of the three-dimensional image that correspond to each polygon surface. This extraction approach obtains the required color data without processing the entire volume, reducing computational load while maintaining color accuracy.
2Device complexity
If surface data is displayed with single color, then structure checking is simplified, but object boundary recognition becomes difficult and visual realism decreases
Solution Approach 1:
The patent applies different color information to different polygon surfaces based on their corresponding two-dimensional sections. Each surface receives localized color data extracted from its specific section, enabling boundary recognition and visual realism while maintaining the simplicity of surface-based rendering.
3Measurement precision
If texture is generated in advance and assigned to surface data, then visual realism is improved, but color adjustment becomes difficult
Solution Approach 1:
The patent uses a color table that can be modified to change the color parameters of the extracted color information. By adjusting the color table parameters, users can easily modify the colors assigned to polygon surfaces without regenerating textures, maintaining visual realism while enabling flexible color adjustment.
Data Source
AI summary
The three-dimensional image processing apparatus includes a surface data generation unit that extracts a display target from a three-dimensional image and generates surface data indicating a surface of the display target, a color information acquisition unit that performs a volume rendering process for the three-dimensional image of a specific section including a vertex of the surface data in a direction from the outside to the inside of a surface forming the surface data to acquire color information and assigns a color to the surface of the surface data on the basis of the color information, and a display control unit that displays the surface data having the surface, to which the color has been assigned, on a display unit.