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更换不同的数据集需要修改pixel_mean和pixel_std吗？ #295

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Sunbees opened this issue Oct 5, 2020 · 4 comments
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更换不同的数据集需要修改pixel_mean和pixel_std吗？ #295

Sunbees opened this issue Oct 5, 2020 · 4 comments

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@Sunbees
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Sunbees commented Oct 5, 2020

你好，使用不同的数据集PIXEL_MEAN和PIXEL_STD需要根据数据集计算吗？还是只要保持原来的默认参数？
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@L1aoXingyu
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pixel_mean 和 pixel_std 都是 imagenet 数据集上的结果，如果还是使用 imagenet pretrain model，那么可以一直使用这个 pixel_mean 和 pixel_std.

@yyyyykp
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yyyyykp commented Oct 21, 2020 •
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pixel_mean 和 pixel_std 都是 imagenet 数据集上的结果，如果还是使用 imagenet pretrain model，那么可以一直使用这个 pixel_mean 和 pixel_std.

@L1aoXingyu 你好，请问如果我修改了数据集的SIZE_TRAIN和SIZE_TEST，PIXEL_MEAN和PIXEL_STD还需要重新计算吗？

@L1aoXingyu
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不用，这个和 size 没关系

@yyyyykp
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yyyyykp commented Oct 21, 2020 •
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不用，这个和 size 没关系

好的 谢谢~

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@L1aoXingyu @yyyyykp @Sunbees