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Add ops.py comment for nm = number of masks (#13353)

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Co-authored-by: UltralyticsAssistant <web@ultralytics.com>
Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>
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kubade-ashish 2024-06-04 18:08:52 +05:30 • committed by GitHub
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ultralytics/utils/ops.py
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@ -215,7 +215,7 @@ def non_max_suppression(
bs = prediction.shape[0] # batch size bs = prediction.shape[0] # batch size
nc = nc or (prediction.shape[1] - 4) # number of classes nc = nc or (prediction.shape[1] - 4) # number of classes
nm = prediction.shape[1] - nc - 4 nm = prediction.shape[1] - nc - 4 # number of masks
mi = 4 + nc # mask start index mi = 4 + nc # mask start index
xc = prediction[:, 4:mi].amax(1) > conf_thres # candidates xc = prediction[:, 4:mi].amax(1) > conf_thres # candidates