Those projects uses OpenCV version 4.0.1. However, OpenCV binary isn't include in those projects. You can get OpenCV binary by following steps.
A binary version is available as it is.
- Download opencv-4.0.1-ios-framework.zip from https://github.com/opencv/opencv/releases/download/4.1.0/opencv-4.1.0-ios-framework.zip
- Unzip the file.
- Drag
opencv2.framework
into the root directory and select copy to the project.