输入: 下载.png
模式: RGBA  尺寸: (320, 230)
参数: is_sig=True height_cm=1 noise=0 rotate=[0,0] dpi=96
阈值: alpha>30  亮度<210  二值化>128  白底>240
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[00] original           size=(320, 230)     alpha=  2.5%  dark=100.0%  content=  2.5%  bbox=(69, 85, 232, 166)
[01] binarized          size=(320, 230)     alpha=100.0%  dark=100.0%  content=100.0%  bbox=(0, 0, 320, 230)
[02] white_removed      size=(320, 230)     alpha=100.0%  dark=100.0%  content=100.0%  bbox=(0, 0, 320, 230)
[03] border_cropped     size=(320, 230)     alpha=100.0%  dark=100.0%  content=100.0%  bbox=(0, 0, 320, 230)
[04] scaled             size=(51, 37)       alpha=100.0%  dark=100.0%  content=100.0%  bbox=(0, 0, 51, 37)
[05] noised             SKIPPED
[06] rotated            SKIPPED
[07] final_cropped      size=(51, 37)       alpha=100.0%  dark=100.0%  content=100.0%  bbox=(0, 0, 51, 37)
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最终输出: final.png  size=(51, 37)