Data
We would like to thank the 3D Warehouse[1], Wang et al.[2], and the users of SketchUp
for making these models available. Before you start, take a look at this
pre-analyzed example to see what the analyzed results look like (also, see the format description).
|
Data Format
Getting the models and the ground truth.
Downloading the 3D Warehouse models
Unfortunately, we could not obtain a permission from 3D Warehouse to re-distribute the models.
The models are still publicly available and we distribute scripts to obtain the models.
Essentially, the scripts do the following: (1) download the *.skp files,
(2) convert them to *.off. Note that the second step is complicated because we could not find
any command-line converters for *skp files.
Thus, our solution is to run a Ruby script from SketchUp, convert files to google
earth / collada format, and then convert it further to *off using open collada.
Here are the scripts:
- Step 1: Download scripts
- Step 2: Download SketchUp
- Step 3: Download models by executing DownloadSkp.py. Note that ids/*txt files contain
a map between our *_export.tgz and 3D warehouse model ids.
- Step 4: Convert SketchUp to Google Earth format with ConvertSkp2Kmz.py
(this step requires SketchUp and MacOSX)
- Step 5: Convert Google Earth format to OFF with ConvertKmz2Off.py
(this step requires 64-bit MacOSX).
Feel free to contact me if you have troubles with the steps above.
Ground Truth
- _gt.zip contains ground truth data, where each 3D model has a corresponding text file.
Only consider models where the first line says "Valid". It is followed by feature points,
one point per line, ordered consistently across all models. Each line [tid b1 b2 b3 x y z]
starts with barycentric coordinates (triangle id + 3 coordinates), and ends with 3 coordinate
positions of the feature point. Note that (x y z) is the most reliable since triangulation
might change depending on the conversion steps (e.g. we have no control over Sketchup -> Google Earth
conversion). Lines with -1 for triangle id indicate that there is no feature point.
|
Results format
Archives in the second column contain analysis results that are simplified to
make parsing easier.
_export.tgz contains analysis of ALL models.
_gt_export.tgz contains analysis of 100 models that have ground truth
correspondences.
Here is the content description for these directories.
_scores.txt Lists models along with analysis meta-data. Each line has the following
entries: model_id fitting_energy computation_time template_id 0. You can
pick models with the smallest fitting_energy to ensure that you only have positive
results (e.g. for an application).
|
|