Photonic Crystal - Size Measurement
バージョン 1.0.1 (12.2 MB) 作成者:
Ngo Nguyen
Measure sizes of circular/triangular holes of photonic crystal structures
This MATLAB designer app is used to measure the diameter and period of periodic holes of photonic crystal structures.
- The image is binarized and filtered small objects (noise)
- If the air hole is circular, the function imfindcircles is used to detect circles. Center and radius are also calculated.
- If the air hole is triangular, the areas of objects are measured. Then, the effective length(l) is calculated based on the area (S), l = sqrt(4*S/sqrt(3)).
- The period is determined by measuring statistics of distances between two closet air holes on horizontal lines.
Note: The number of horizontal lines are calculated automatically using kmeans algorithm.
The reference is USAF 1951 Test Target.
引用
Ngo Nguyen (2024). Photonic Crystal - Size Measurement (https://www.mathworks.com/matlabcentral/fileexchange/135752-photonic-crystal-size-measurement), MATLAB Central File Exchange. 取得済み .
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作成:
R2023b
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