Augmentor 使用介绍

原图

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random_distortion(probability, grid_height, grid_width, magnitude)

最终选择参数为

p.random_distortion(probability=0.8, grid_height=3, grid_width=3, magnitude=6)

<img src="https://ask.qcloudimg.com/draft/1215004/8xs7bfzt0h.jpg" style="border:5px solid black;border-radius:15px;">

</center>

其他参数效果：

magnitude和grid_width,grid_height越大，扭曲程度越大

p.random_distortion(probability=0.6, grid_height=6, grid_width=6, magnitude=5)

<img src="https://ask.qcloudimg.com/draft/1215004/xe2ch5stf6.jpg" style="border:5px solid black;border-radius:15px;">

</center>

p.random_distortion(probability=0.6, grid_height=6, grid_width=6, magnitude=9)

<img src="https://ask.qcloudimg.com/draft/1215004/v5ibn2xbip.jpg" style="border:5px solid black;border-radius:15px;">

</center>

p.random_distortion(probability=0.6, grid_height=10, grid_width=10, magnitude=5)

<img src="https://ask.qcloudimg.com/draft/1215004/pfkelfzzs9.jpg" style="border:5px solid black;border-radius:15px;">

</center>

random_erasing(probability, rectangle_area)

rectangle_area表示覆盖区域的比例，值越大比例越大。但是设置为1的时候并不是全覆盖，不知道为什么，反正也没必要弄清楚

p.random_erasing(1,1)

<img src="https://ask.qcloudimg.com/draft/1215004/nfzgashwpu.jpg" style="border:5px solid black;border-radius:15px;">

</center>

zoom_random(probability, percentage_area)

放大图片，然后按照percenta_area的比例对图片进行crop。

p.zoom_random(probability=1, percentage_area=0.2)

<img src="https://ask.qcloudimg.com/draft/1215004/z3pq0il2yv.jpg" style="border:5px solid black;border-radius:15px;">

</center>

p.zoom_random(probability=1, percentage_area=0.8)

<img src="https://ask.qcloudimg.com/draft/1215004/lgovik70gw.jpg" style="border:5px solid black;border-radius:15px;">

</center>

zoom(probability, min_factor, max_factor)

p.zoom(probability=1, min_factor=1.1, max_factor=1.5)

<img src="https://ask.qcloudimg.com/draft/1215004/4yyglvtkl8.jpg" style="border:5px solid black;border-radius:15px;">

</center>

p.zoom(probability=1, min_factor=2, max_factor=2)

<img src="https://ask.qcloudimg.com/draft/1215004/8o0d3khs3u.jpg" style="border:5px solid black;border-radius:15px;">

</center>

组合操作

p.rotate_random_90(probability=0.8)
p.random_distortion(probability=0.8, grid_height=3, grid_width=3, magnitude=6)
p.random_erasing(0.3, 0.2)
p.zoom(probability=0.4, min_factor=1.1, max_factor=1.5)
p.sample(6)

<img src="https://ask.qcloudimg.com/draft/1215004/lf5bhcbvdd.jpg" style="border:5px solid black;border-radius:15px;">

<img src="https://ask.qcloudimg.com/draft/1215004/tke9bn7k07.jpg" style="border:5px solid black;border-radius:15px;">

<img src="https://ask.qcloudimg.com/draft/1215004/cmefd4p362.jpg" style="border:5px solid black;border-radius:15px;">

<img src="https://ask.qcloudimg.com/draft/1215004/fqfg33rvxn.jpg" style="border:5px solid black;border-radius:15px;">

<img src="https://ask.qcloudimg.com/draft/1215004/ze5uk27h9p.jpg" style="border:5px solid black;border-radius:15px;">

<img src="https://ask.qcloudimg.com/draft/1215004/hrfzwy4y47.jpg" style="border:5px solid black;border-radius:15px;">

</center>