关于semantic segment

视频逐帧截图——关于ffmpeg

ffmpeg -i ./DJI_0012.MOV -r 1 -f image2 rgb/%05d.png

• 要把视频放在一个文件夹里，
• 要创建一个名为rgb的文件来存放截取下来的图片

安装semantic-segmentation-editor

根据github上的指示安装semantic-segmentation-editor github
在执行meteor npm install的时候可能会出现如下error

npm WARN deprecated core-js@2.5.7: core-js@<2.6.8 is no longer maintained. Please, upgrade to core-js@3 or at least to actual version of core-js@2.
npm WARN deprecated core-js@1.2.7: core-js@<2.6.8 is no longer maintained. Please, upgrade to core-js@3 or at least to actual version of core-js@2.
npm ERR! path /Users/chenyaqian/.npm/_locks
npm ERR! code EISDIR
npm ERR! errno -21
npm ERR! syscall open
npm ERR! EISDIR: illegal operation on a directory, open '/Users/chenyaqian/.npm/_locks'

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/chenyaqian/.npm/_logs/2019-08-28T03_09_02_871Z-debug.log
cyqdeMacBook-Pro:semantic-segmentation-editor-master chenyaqian$ sudo chown -R $(whoami) $HOME/.npm

这个时候需要

sudo chown -R $(whoami) $HOME/.npm