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two-threshold peak-finding algorithm in restricted region around pixel with maximal intensity. Two threshold allows to speed-up this algorithms. It is assumed that only pixels with intensity above thr_high are pretending to be peak candidate centers. Candidates are considered as a peak if their intensity is maximal in the (square) region of radius around them. Low threshold in the same region is used to account for contributing to peak pixels.
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| peak_finder_v1 |
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| peak_finder_v1 |
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peak_finder_v1| Code Block |
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peaks = alg.peak_finder_v1(nda, thr_low=10, thr_high=150, radius=5, dr=0.05) |
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define peaks for regions of connected pixels above threshold
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| peak_finder_v2 |
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| peak_finder_v2 |
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peak_finder_v2| Code Block |
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peaks = alg.peak_finder_v2(nda, thr=10, r0=5, dr=0.05) |
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define peaks in local maximums of specified rank (radius), for example rank=2 means 5x5 pixel region around central pixel.
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| peak_finder_v3 |
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| peak_finder_v3 |
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peak_finder_v3| Code Block |
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peaks = alg.peak_finder_v3(nda, rank=2, r0=5, dr=0.05) |
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alg.set_peak_selection_pars(npix_min=5, npix_max=500, amax_thr=0, atot_thr=1000, son_min=6) |
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| peak_finder_v4 |
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| peak_finder_v4 |
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peak_finder_v4| Code Block |
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peaks = alg.peak_finder_v4(nda, thr_low=10, thr_high=150, rank=2, r0=5, dr=0.05) |
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