2025-09-22 02:07:45 +00:00
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AB版本拉伸策略：
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# 判断是否为dB
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# immask = np.isfinite(im_data)
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# imvail_data = im_data[immask]
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# minvalue = np.percentile(imvail_data,30)
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# if minvalue<0 :
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# im_data=np.power(10.0,im_data/10.0)
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im_data=np.sqrt(im_data)
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immask = np.isfinite(im_data)
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imvail_data = im_data[immask]
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minvalue=np.nanmin(imvail_data)
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maxvalue=np.nanmax(imvail_data)
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minvalue_01Prec = np.percentile(imvail_data, 2) # 20250904 1%拉伸
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maxvalue_999Prec = np.percentile(imvail_data, 98)
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print('sqrt root min - max ', minvalue,maxvalue)
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if (maxvalue-minvalue)/(maxvalue_999Prec-minvalue_01Prec)>3: # 表示 拉伸之后，像素值绝大部分很有可能集中在 80
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minvalue=minvalue_01Prec
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maxvalue=maxvalue_999Prec
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print('sqrt root min(0.1) - max(99.9) ', minvalue, maxvalue)
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im_data = (im_data - minvalue) / (maxvalue - minvalue) * 254 + 1
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im_data = np.clip(im_data, 0, 255)
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2025-09-22 05:39:35 +00:00
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return im_data.astype(np.uint8)
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2025-09-22 06:09:39 +00:00
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# 常用网址
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## 清华源地址
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2025-09-22 05:39:35 +00:00
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pip install nodezator -i https://pypi.tuna.tsinghua.edu.cn/simple
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2025-09-22 06:09:39 +00:00
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conda install numpy -c https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
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## 腾讯元宝
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https://yuanbao.tencent.com/chat/naQivTmsDa
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