输入: 1.jpg
模式: RGB  尺寸: (2048, 1382)
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=(2048, 1382)   alpha=100.0%  dark=  3.2%  content=  3.2%  bbox=(0, 0, 2048, 1382)
[01] binarized          size=(2048, 1382)   alpha=100.0%  dark=  3.1%  content=  3.1%  bbox=(0, 0, 2044, 1381)
[02] white_removed      size=(2048, 1382)   alpha=  3.1%  dark=  3.1%  content=  3.1%  bbox=(0, 0, 2044, 1381)
[03] border_cropped     size=(2044, 1381)   alpha=  3.1%  dark=  3.1%  content=  3.1%  bbox=(0, 0, 2044, 1381)
[04] scaled             size=(54, 37)       alpha=  8.9%  dark=100.0%  content=  8.9%  bbox=(10, 12, 42, 32)
[05] noised             SKIPPED
[06] rotated            SKIPPED
[07] final_cropped      size=(32, 20)       alpha= 27.8%  dark=100.0%  content= 27.8%  bbox=(0, 0, 32, 20)
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最终输出: final.png  size=(32, 20)