ImportError: libpng12.so.0: cannot open shared object file: No such file or directory

在conda环境中调用opencv报错：ImportError: libpng12.so.0: cannot open shared object file: No such file or directory
原因：动态链接库丢失或路径找不到
解决：执行下列命令即可

wget -q -O /tmp/libpng12.deb http://mirrors.kernel.org/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.54-1ubuntu1_amd64.deb \
  && sudo dpkg -i /tmp/libpng12.deb \
  && rm /tmp/libpng12.deb
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