This repository contains inference code for using a modified stacked-hourglass to detect semantic keypoints on cars.

The network outputs a likelihood of keypoint presence over every pixel of an input image (the input image is a 64 x 64 car bounding box).

Here is a 3D wireframe with reference keypoints.

This code assumes you have the following packages installed.

• Torch7
• Torch packages: nn, cunn, cudnn, image, nngraph

Download the pre-trained model here.

To perform inference on a set of images, first edit valid.txt and add paths to the images you need to run inference on. These images must only contain cropped car bounding boxes (i.e., from any image that contains a car, pick only one car bounding box and crop the region of the image contained within that bounding box). These are the only kind of images the model has been trained on.

Then, run the inference script.

inference.lua

This will write a results.txt file (you can edit the name and path of this output file in inference.lua).

You must have a valid.txt file and a model.t7 following the instructions above. All arguments must be used. If you do not you must create a absolute path dir /abosolute/path/to/ with a valid.txt file and a model.t7. The generated results.txt will also be located there

th inference.lua ./valid.txt ./model.t7 ./results.txt

lua inference.lua ./valid.txt ./model.t7 ./results.txt