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add acf and psdf nodes

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matei jordache
2026-03-27 23:11:04 -07:00
parent ab71688e01
commit 61d7b0fdcc
8 changed files with 325 additions and 81 deletions
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4
GWYDDION_FEATURE_GAP.md
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@@ -14,8 +14,8 @@ Reference for future implementation. Grouped by value to typical SPM workflows.
| ~~4~~ | ~~Morphological Mask Ops~~ | ~~mask_morph.c~~ | ~~Erode, dilate, open, close on grain masks. Needed to clean up thresholded masks.~~ **DONE** |
| ~~5~~ | ~~1D FFT Filter~~ | ~~fft_filter_1d.c~~ | ~~Bandpass/lowpass/highpass filtering of LINE profiles.~~ **DONE** |
| ~~6~~ | ~~2D FFT Filter~~ | ~~fft_filter_2d.c~~ | ~~Frequency-domain filtering of DATA_FIELDs (remove periodic noise, etc.).~~ **DONE** |
| 7 | Autocorrelation (ACF) | acf2d.c | 2D autocorrelation function. Reveals periodic structures and correlation lengths. |
| 8 | PSDF | psdf2d.c | Radial/2D power spectral density function. Complementary to ACF for roughness characterization. |
| ~~7~~ | ~~Autocorrelation (ACF)~~ | ~~acf2d.c~~ | ~~2D autocorrelation function. Reveals periodic structures and correlation lengths.~~ **DONE** |
| ~~8~~ | ~~PSDF~~ | ~~psdf2d.c~~ | ~~Radial/2D power spectral density function. Complementary to ACF for roughness characterization.~~ **DONE** |
| 9 | Fractal Dimension | fractal.c | Multiple methods: partitioning, cube counting, triangulation, PSDF, HHCF. Quantifies surface complexity. |
| 10 | Curvature | curvature.c | Local mean/Gaussian curvature maps. Useful for feature identification. |
| 11 | Grain Distance Transform | mask_edt.c | Euclidean distance from grain boundaries. Useful for spatial distribution analysis. |