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Remove useless bboxes&labels in CocoDataset#158

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ShiquanYu wants to merge 1 commit intoRangiLyu:mainfrom
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Remove useless bboxes&labels in CocoDataset#158
ShiquanYu wants to merge 1 commit intoRangiLyu:mainfrom
ShiquanYu:main

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@ShiquanYu
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使用Dataloader查看图像时发现如下现象:
nanodet_error_label

因为random crop部分框在图像之外了(比例大约在3-5%),就在dataloader中将这些框去除。

去除后又发现有些图片全是背景,没有目标,就把这些没目标的图像也一并去除了(比例大约<1%)。

接着用这些数据在之前训练好的repvgg上进行连finetuning,训练了15个epoch,较之前提升了0.005%的精度(可能只是训练时的精度波动 orz)。

大佬你看着合,具体有没有提升还不清楚0.0

@RangiLyu
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我先测试一下

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