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image weights compatible faster random index generator v2 for mosaic augmentation (#2383)

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image weights compatible faster random index generator v2 for mosaic augmentation
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Yonghye Kwon authored and GitHub committed 2021-03-05 22:58:26 -08:00
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commit cd8ed3521d
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utils/datasets.py
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@@ -666,7 +666,7 @@ def load_mosaic(self, index):
labels4, segments4 = [], []
s = self.img_size
yc, xc = [int(random.uniform(-x, 2 * s + x)) for x in self.mosaic_border] # mosaic center x, y
indices = [index] + [self.indices[random.randint(0, self.n - 1)] for _ in range(3)] # 3 additional image indices
indices = [index] + random.choices(self.indices, k=3) # 3 additional image indices
for i, index in enumerate(indices):
# Load image
img, _, (h, w) = load_image(self, index)
@@ -721,7 +721,7 @@ def load_mosaic9(self, index):
labels9, segments9 = [], []
s = self.img_size
indices = [index] + [self.indices[random.randint(0, self.n - 1)] for _ in range(8)] # 8 additional image indices
indices = [index] + random.choices(self.indices, k=8) # 8 additional image indices
for i, index in enumerate(indices):
# Load image
img, _, (h, w) = load_image(self, index)