Extension to equirectangular images

[ghost]

There are some modules extended for equirectangular images in the source code.
I am really interested in sfm using panoramic images.
Is there any plan to release a whole sfm system for equirectangular images in the future, or is it already possible to perform sfm for equirectangular images?

[paulinus]

The functionality is there already. It works with no changes as long as the images contain gpano information.
Things you may want to change to improve the results:

• Make sure images are detected as equirectangular. Look at the generated file camera_models.json and see if projection_type is equirectangular. If it is not, rename that file to camera_models_overrides.json and edit the projection type.
• Increase the image resolution and number of features to extract. For example set

feature_min_frames: 16000
feature_process_size: 4000

in config.yaml

[ghost]

Thank you for your quick reply.
It was thanks to your advice that I can perform sfm for equirectangular images.
(It is necessary for me to edit the projection type.)

I like this the best in many sfm libraries.
I hope further development of this project!

[salus-sage]

Hi,
I tried building using a equirectangular image, which breaks, below is the full log. After i tried yoour suggestion to rename camera_model.json to camera_models_overrides.json and run bin/run_all another camera_models.json is created with projection type "perspective"

libdc1394 error: Failed to initialize libdc1394 2016-12-28 15:02:13,127 Extracting focal lengths for image panorama.jpg libdc1394 error: Failed to initialize libdc1394 2016-12-28 15:02:13,490 Extracting ROOT_HAHOG features for image panorama.jpg 2016-12-28 15:02:22,575 Found 18584 points in 8.88563394547s libdc1394 error: Failed to initialize libdc1394 2016-12-28 15:02:24,703 Matching 0 image pairs 2016-12-28 15:02:24,737 Matching panorama.jpg - 1 / 1 libdc1394 error: Failed to initialize libdc1394 2016-12-28 15:02:25,198 reading features 2016-12-28 15:02:25,225 Merging features onto tracks 2016-12-28 15:02:25,225 Good tracks: 0 libdc1394 error: Failed to initialize libdc1394 2016-12-28 15:02:25,542 0 partial reconstructions in total. libdc1394 error: Failed to initialize libdc1394 Traceback (most recent call last): File "/source/OpenSfM/bin/opensfm", line 34, in <module> command.run(args) File "/source/OpenSfM/opensfm/commands/mesh.py", line 22, in run reconstructions = data.load_reconstruction() File "/source/OpenSfM/opensfm/dataset.py", line 305, in load_reconstruction with open(self.__reconstruction_file(filename)) as fin: IOError: [Errno 2] No such file or directory: 'data/esg2/reconstruction.json'

[paulinus]

@salus-sage You need to use more than 1 image to run OpenSfM

closing the issue since the original problem is solved