v1.0 features：
1.Support image display and processing function, including zoom, rotation etc.
2.Screenshots function.
3.Recording video function.
4.Annotate function on real-time display image,such as underscores.
v1.0 features：
1.Support image display and processing function, including zoom, rotation etc.
2.Screenshots function.
3.Recording video function.
4.Annotate function on real-time display image,such as underscores.