Missing Portion of Orthomosaic Tile Set After Processing

Hello,

I flew a 40 acre project for a surveyor friend of mine last week. The flight was flown at 200 Ft AGL using Drone Deploy app with terrain following feature since there was some undulation on the western side of the project. After processing the resulting ortho is missing a portion of the flown project as shown below. Has anyone experienced this before and if so are there some corrective measures that can be taken in the settings? 6 GCP’s were used in this project. Here are the processing parameters:

[INFO] DTM is turned on, automatically turning on point cloud classification
[INFO] Initializing ODM - Wed Mar 25 13:32:44 2020
[INFO] ==============
[INFO] build_overviews: False
[INFO] camera_lens: brown
[INFO] cameras: {}
[INFO] crop: 3
[INFO] debug: False
[INFO] dem_decimation: 1
[INFO] dem_euclidean_map: False
[INFO] dem_gapfill_steps: 3
[INFO] dem_resolution: 100.0
[INFO] depthmap_resolution: 1000.0
[INFO] dsm: True
[INFO] dtm: True
[INFO] end_with: odm_orthophoto
[INFO] fast_orthophoto: False
[INFO] feature_type: sift
[INFO] force_gps: False
[INFO] gcp: /var/www/data/dabe0eb0-3dd7-4fd4-945b-5cee2c8eabeb/gcp/gcp_file_1584982174976.txt
[INFO] ignore_gsd: True
[INFO] matcher_distance: 0
[INFO] matcher_neighbors: 8
[INFO] max_concurrency: 10
[INFO] merge: all
[INFO] mesh_octree_depth: 12
[INFO] mesh_point_weight: 4
[INFO] mesh_samples: 1.0
[INFO] mesh_size: 200000
[INFO] min_num_features: 8000
[INFO] mve_confidence: 0.6
[INFO] name: dabe0eb0-3dd7-4fd4-945b-5cee2c8eabeb
[INFO] opensfm_depthmap_method: PATCH_MATCH
[INFO] opensfm_depthmap_min_consistent_views: 3
[INFO] opensfm_depthmap_min_patch_sd: 1
[INFO] orthophoto_compression: DEFLATE
[INFO] orthophoto_cutline: False
[INFO] orthophoto_no_tiled: False
[INFO] orthophoto_png: True
[INFO] orthophoto_resolution: 2.0
[INFO] pc_classify: True
[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: /var/www/data
[INFO] radiometric_calibration: none
[INFO] rerun: None
[INFO] rerun_all: False
[INFO] rerun_from: None
[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_overlap: 150
[INFO] texturing_data_term: gmi
[INFO] texturing_keep_unseen_faces: False
[INFO] texturing_nadir_weight: 28
[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: gamma
[INFO] time: False
[INFO] use_3dmesh: True
[INFO] use_exif: False
[INFO] use_fixed_camera_params: False
[INFO] use_hybrid_bundle_adjustment: False
[INFO] use_opensfm_dense: False
[INFO] verbose: False

Drone Deploy Flight Plan
Capture

Actual ortho produce from WebODM after the process discarded approximately 100 images that would have been in the red circled area below.
InkedMissing Tiles_LI

Try increasing --min-num-features (double the default value).

That worked! I don’t know why I didn’t think of that! Thank you again.

So now the next question s now that I have this processed I am performing a check on my ground control and noticed a mis-alignment of about 2 decimeters. I was diligent with locating them in the GCP editor.
Any ideas?

GCP Misalignment

1 Like