interface instructions and pipeline videos

User interface hints:

1. here are some data sets.
2. go file, open... and select the tweed.xml file in the root of the unzipped data set.
3. select the layer panos, then click download to fetch the panoramas from google. watch the command line for progress. this will take up a bunch of disk space (5mb per image).
4. it will write a file .tweed_config into your home directory; this is the only state it creates outside of the data folders.
5. look at the command line for feedback (some operations like finding profiles or features are slow, and don't have progress bars)
6. use left mouse drag + W A S D keys to navigate the 3D view
7. arrow keys change brightness and camera speed, page up and page down control fov
8. right mouse button selects things in the 3D view. for example right clicking on a block with the select tool will import the corresponding 3D mesh if it exists.
9. intermediate results (meshes, rendered images, and detected features) are written to the project's data diretory. some of these (in the scratch folder) are deleted when you quit.
10. you can edit the visiblity of different layers with the layer-list check boxes

Rough videos showing various convoluted UI paths for obscure use cases:

1. introduction to the ui.
2. a pipeline to import obj files to the skeleton format so we can run FrankenGAN etc...
3. projecting a panorama onto a mesh. This shows the panorama and obj mesh pipeline for reprojecting panoramic images onto building meshes.
4. loading panormas into chordatals and rendering orthographics on facades.
5. using the an early prototype of the frankenGAN style interface.