①

管理员模式
npm install --global windows-build-tools

②

下载opencv 解压到一个文件夹(如：D:\opencv)
https://github.com/opencv/opencv/releases/

③

设置环境变量
OPENCV_INCLUDE_DIR
OPENCV_LIB_DIR
OPENCV_BIN_DIR
path加入%OPENCV_BIN_DIR%

④

# linux and osx:
export OPENCV4NODEJS_DISABLE_AUTOBUILD=1
# on windows:
set OPENCV4NODEJS_DISABLE_AUTOBUILD=1

⑤

npm install --global opencv4nodejs

opencv4nodejs windows 安装 install

原文：https://www.cnblogs.com/liukaigsx/p/14631789.html