Colored 2D Projection Images from 3D Data
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Solution Overview
Problem
Two-dimensional projection images generated from three-dimensional image scanners often lack color, making it difficult to accurately differentiate between objects based on their composition, as they are typically grayscale and colored only based on radiation attenuation, leading to confusion between objects with similar attenuation values.
Innovation Solution
A method and apparatus that use three-dimensional image data to generate colored two-dimensional projection images, where the color generator extracts RGB components from a colored synthetic image and converts them to HSV components to accurately depict properties like density and atomic number, allowing for differentiation between objects based on their composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If two-dimensional projection images are colored based on radiation attenuation, then the images can be displayed with color information, but different objects with similar attenuation values cannot be differentiated
Solution Approach 1:
The patent changes the parameter used for coloring from radiation attenuation to material composition properties (density, atomic number). This allows objects with similar attenuation values but different compositions to be differentiated by their distinct color representations based on density or atomic number values.
2Manufacturing precision
If grayscale coloring is used for two-dimensional projection images, then the images maintain high resolution and low artifacts, but the images lack color information needed for accurate object identification
Solution Approach 1:
The patent applies color mapping based on material composition parameters (density, atomic number) rather than maintaining grayscale or using attenuation-based coloring. This preserves the high resolution and low artifact characteristics while adding meaningful color information that enables accurate object identification.
3Measurement precision
If three-dimensional images are used for detailed examination, then composition information can be accurately depicted, but the examination time increases
Solution Approach 1:
The patent creates a colored two-dimensional projection image that copies the material composition information from three-dimensional data. This provides accurate composition depiction in a two-dimensional format that can be reviewed more quickly than three-dimensional images, reducing examination time while maintaining accuracy.
Solution Approach 2:
The patent transfers three-dimensional material composition data into a two-dimensional projection format with color encoding. This dimensionality change allows the benefits of 3D composition accuracy to be accessed through a 2D interface that is faster to examine.
Data Source
AI summary
A projection image of an object is colored using three-dimensional image data. This may be particularly useful in radiographic imaging applications, for example. In one embodiment, a colored synthetic image is rendered from a colored three-dimensional image of an object, and color components of pixels of the synthetic image are used to determine color components, or color values, for corresponding pixels of a projection image depicting a similar view of the object as the synthetic image. In this way, the two-dimensional projection image is colored similarly to the colored three-dimensional image. For example, the projection image may be colored based upon density (if the three-dimensional image is colored based upon density) so aspects of the object that attenuate a similar amount of radiation but have different densities may be colored differently.