Hexagonal Pixel Radiographic Imaging Device with Square Grid Conversion
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Solution Overview
Problem
Radiographic imaging devices face challenges in balancing resolution and sensitivity, particularly when reducing pixel size, which leads to decreased image quality and unnecessary enlargement of image data during pixel density conversion.
Innovation Solution
A radiographic imaging device using hexagonal shaped pixels arrayed in a honeycomb pattern, with pixel density conversion methods that ensure the maximum diagonal length of hexagonal pixels is equal to or greater than the diagonal length of the square grid after conversion, preventing signal waste and unnecessary data size increase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pixel size is reduced to increase resolution, then resolution improves, but sensitivity drops due to decreased charge collection quantity
Solution Approach 1:
The patent transitions from conventional square pixel arrangement to a hexagonal pixel arrangement, changing the geometric dimension and spatial relationship between pixels. This hexagonal configuration allows for more efficient space utilization and charge collection pathways, thereby improving sensitivity while maintaining high resolution through appropriate pixel density conversion to square grid format.
2Adaptability or versatility
If pixel density conversion is performed from hexagonal to square grid, then compatibility with output devices is improved, but image data size enlarges unnecessarily
Solution Approach 1:
The patent carefully controls the conversion parameters between hexagonal and square pixel grids by establishing specific mathematical relationships between pixel pitches and diagonal lengths. By setting the square pixel pitch within a defined range relative to the hexagonal pixel dimensions, the conversion achieves device compatibility while preventing unnecessary data expansion through optimized sampling density.
3Adaptability or versatility
If pixel density conversion is performed from hexagonal to square grid, then compatibility with output devices is improved, but processing speed decreases
Solution Approach 1:
The patent performs pixel density conversion as a preliminary processing step immediately after image acquisition from the hexagonal detector. By establishing the conversion framework in advance with pre-calculated geometric relationships and optimal sampling parameters, the system prepares the image data for efficient processing and output device compatibility without introducing excessive computational overhead during subsequent processing stages.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach maintains or improves resolution across all directions while preventing the enlargement of image data, thus enhancing sensitivity and processing speed.
Implementation Method 1
a radiation detection element, the radiation detection element including plural same sized hexagonal shaped pixels that detect radiation
Data Source
AI summary
A radiographic imaging device includes a radiation detection element including plural same sized hexagonal shaped pixels that detect radiation and are arrayed in a honeycomb pattern, and a pixel density conversion section that performs interpolation processing such that first image data obtained from the radiation detection element is converted into second image data representing an image in which plural pixels are arrayed in a square grid pattern, wherein when d1max denotes the length of the longest diagonal of the hexagonal shaped pixels, S1 denotes the surface area of the hexagonal shaped pixels, and d2max denotes the length of the diagonals of the square grid of the second image data, d1max is equal to or greater than d2max, and d2max is equal to or greater than the value of the square root of S1.