Hi all,
I want to change the focal length of the camera when launching projects in webodm, that is to say my camera has a focal length of 2.8 mm and webodm misinterprets it for me, so I would like to know if there is any specific option so that I indicate this parameter to webodm
Greetings and thank you!
Yes, take the cameras.json file from a previous run and change the focal values. Then process a new task specifying the “cameras” task option copying/pasting the contents of the modified cameras.json.
Thanks for the reply,
but I get an error when launching a project.
My modified camera.json file is as follows:
{
"unknown unknown 3840 2160 fisheye 0 rgb": {
"p2": 0.011033534397183613,
"p1": 0.004262280833526967,
"width": 3840,
"projection_type": "fisheye",
"height": 2160,
"k3": 0.0024024302227827875,
"k2": 0.01436395906890277,
"k1": 0.059447948629159746,
"focal_y": 2.8,
"focal_x": 2.8,
"c_y": -0.004050441403242289,
"c_x": -0.001988139775925176
}
}
My additional project options are these:
**Options**: rerun-from: dataset, mve-confidence: 0.2, orthophoto-resolution: 1, dem-resolution: 1, ignore-gsd: true, crop: 0, dsm: true, depthmap-resolution: 1000
And the error I get is the following:
[INFO] Initializing ODM - Tue Aug 11 03:41:36 2020
[INFO] ==============
[INFO] build_overviews: False
[INFO] camera_lens: auto
[INFO] cameras: {u'unknown unknown 3840 2160 fisheye 0 rgb': {u'p2': 0.011033534397183613, u'p1': 0.004262280833526967, u'k2': 0.01436395906890277, u'projection_type': u'fisheye', u'height': 2160, u'k3': 0.0024024302227827875, u'width': 3840, u'k1': 0.059447948629159746, u'focal_y': 2.8, u'focal_x': 2.8, u'c_y': -0.004050441403242289, u'c_x': -0.001988139775925176}}
[INFO] crop: 0.0
[INFO] debug: False
[INFO] dem_decimation: 1
[INFO] dem_euclidean_map: False
[INFO] dem_gapfill_steps: 3
[INFO] dem_resolution: 1.0
[INFO] depthmap_resolution: 1000.0
[INFO] dsm: True
[INFO] dtm: False
[INFO] end_with: odm_report
[INFO] fast_orthophoto: False
[INFO] feature_type: sift
[INFO] force_gps: False
[INFO] gcp: None
[INFO] gps_accuracy: 15
[INFO] ignore_gsd: True
[INFO] matcher_distance: 0
[INFO] matcher_neighbors: 8
[INFO] max_concurrency: 6
[INFO] merge: all
[INFO] mesh_octree_depth: 10
[INFO] mesh_point_weight: 4
[INFO] mesh_samples: 1.0
[INFO] mesh_size: 200000
[INFO] min_num_features: 8000
[INFO] mve_confidence: 0.2
[INFO] name: b8387e00-51cb-4359-bf06-e162d6015975
[INFO] opensfm_depthmap_method: PATCH_MATCH
[INFO] opensfm_depthmap_min_consistent_views: 3
[INFO] opensfm_depthmap_min_patch_sd: 1
[INFO] optimize_disk_space: False
[INFO] orthophoto_compression: DEFLATE
[INFO] orthophoto_cutline: False
[INFO] orthophoto_no_tiled: False
[INFO] orthophoto_png: False
[INFO] orthophoto_resolution: 1.0
[INFO] pc_classify: False
[INFO] pc_csv: False
[INFO] pc_ept: False
[INFO] pc_filter: 2.5
[INFO] pc_las: False
[INFO] pc_rectify: False
[INFO] pc_sample: 0
[INFO] project_path: /www/data
[INFO] radiometric_calibration: none
[INFO] rerun: None
[INFO] rerun_all: False
[INFO] rerun_from: ['dataset', 'split', 'merge', 'opensfm', 'mve', 'odm_filterpoints', 'odm_meshing', 'mvs_texturing', 'odm_georeferencing', 'odm_dem', 'odm_orthophoto', 'odm_report']
[INFO] resize_to: 2048
[INFO] skip_3dmodel: False
[INFO] sm_cluster: None
[INFO] smrf_scalar: 1.25
[INFO] smrf_slope: 0.15
[INFO] smrf_threshold: 0.5
[INFO] smrf_window: 18.0
[INFO] split: 999999
[INFO] split_multitracks: False
[INFO] split_overlap: 150
[INFO] texturing_data_term: gmi
[INFO] texturing_keep_unseen_faces: False
[INFO] texturing_nadir_weight: 16
[INFO] texturing_outlier_removal_type: gauss_clamping
[INFO] texturing_skip_global_seam_leveling: False
[INFO] texturing_skip_hole_filling: False
[INFO] texturing_skip_local_seam_leveling: False
[INFO] texturing_skip_visibility_test: False
[INFO] texturing_tone_mapping: none
[INFO] time: False
[INFO] use_3dmesh: False
[INFO] use_exif: False
[INFO] use_fixed_camera_params: False
[INFO] use_hybrid_bundle_adjustment: False
[INFO] use_opensfm_dense: False
[INFO] verbose: False
[INFO] ==============
[INFO] Running dataset stage
[INFO] Loading dataset from: /www/data/b8387e00-51cb-4359-bf06-e162d6015975/images
[INFO] Loading 6 images
[INFO] Wrote images database: /www/data/b8387e00-51cb-4359-bf06-e162d6015975/images.json
[INFO] Found 6 usable images
[INFO] Parsing SRS header: WGS84 UTM 30N
[INFO] Finished dataset stage
[INFO] Running split stage
[INFO] Normal dataset, will process all at once.
[INFO] Finished split stage
[INFO] Running merge stage
[INFO] Normal dataset, nothing to merge.
[INFO] Finished merge stage
[INFO] Running opensfm stage
[INFO] Wrote camera_models_overrides.json to OpenSfM directory
[INFO] Altitude data detected, enabling it for GPS alignment
[INFO] ['use_exif_size: no', 'feature_process_size: 2048', 'feature_min_frames: 8000', 'processes: 6', 'matching_gps_neighbors: 8', 'matching_gps_distance: 0', 'depthmap_method: PATCH_MATCH', 'depthmap_resolution: 1000.0', 'depthmap_min_patch_sd: 1', 'depthmap_min_consistent_views: 3', 'optimize_camera_parameters: no', 'undistorted_image_format: tif', 'bundle_outlier_filtering_type: AUTO', 'align_orientation_prior: vertical', 'triangulation_type: ROBUST', 'bundle_common_position_constraints: no', 'feature_type: SIFT', 'use_altitude_tag: yes', 'align_method: auto', 'local_bundle_radius: 0']
[INFO] running /usr/bin/env python2 /code/SuperBuild/src/opensfm/bin/opensfm extract_metadata "/www/data/b8387e00-51cb-4359-bf06-e162d6015975/opensfm"
2020-08-11 03:41:37,729 INFO: Extracting EXIF for f6.jpg
2020-08-11 03:41:37,740 INFO: Extracting EXIF for f5.jpg
2020-08-11 03:41:37,746 INFO: Extracting EXIF for f3.jpg
2020-08-11 03:41:37,750 INFO: Extracting EXIF for f2.jpg
2020-08-11 03:41:37,753 INFO: Extracting EXIF for f4.jpg
2020-08-11 03:41:37,756 INFO: Extracting EXIF for f1.jpg
Traceback (most recent call last):
File "/code/SuperBuild/src/opensfm/bin/opensfm", line 34, in <module>
command.run(args)
File "/code/SuperBuild/src/opensfm/opensfm/commands/extract_metadata.py", line 48, in run
overrides = data.load_camera_models_overrides()
File "/code/SuperBuild/src/opensfm/opensfm/dataset.py", line 479, in load_camera_models_overrides
return io.cameras_from_json(obj)
File "/code/SuperBuild/src/opensfm/opensfm/io.py", line 196, in cameras_from_json
cameras[key] = camera_from_json(key, value)
File "/code/SuperBuild/src/opensfm/opensfm/io.py", line 68, in camera_from_json
camera.focal = obj['focal']
KeyError
:
u'focal'
Traceback (most recent call last):
File "/code/run.py", line 61, in <module>
app.execute()
File "/code/stages/odm_app.py", line 95, in execute
self.first_stage.run()
File "/code/opendm/types.py", line 350, in run
self.next_stage.run(outputs)
File "/code/opendm/types.py", line 350, in run
self.next_stage.run(outputs)
File "/code/opendm/types.py", line 350, in run
self.next_stage.run(outputs)
File "/code/opendm/types.py", line 331, in run
self.process(self.args, outputs)
File "/code/stages/run_opensfm.py", line 28, in process
octx.extract_metadata(self.rerun())
File "/code/opendm/osfm.py", line 221, in extract_metadata
self.run('extract_metadata')
File "/code/opendm/osfm.py", line 23, in run
(context.opensfm_path, command, self.opensfm_project_path))
File "/code/opendm/system.py", line 76, in run
raise Exception("Child returned {}".format(retcode))
Exception: Child returned 1
Any idea what may be going on?
The fisheye model does not have focal_x and focal_y, just focal (which is missing?)
okay thank you very much.
Is there any tutorial or guide on how to change the camera settings? something that is more specific, I’m a bit lost on this issue.
Anyway thank you very much!