Package index • fly

Estimate footprints

The ground a photo covers, from its catalogue record, optionally with an elevation model.

fly_footprint(): Estimate photo footprint polygons from centroids and scale
fly_camera_patb(): Read the camera a frame's PAT-B file names
fly_summary(): Summarize photo footprint sizes and date ranges by scale

Choose photos for an area

Which photos cover an area of interest, how much, and a small set that covers it.

fly_filter(): Filter photos by spatial relationship with an AOI
fly_select(): Select photos covering an AOI
fly_coverage(): Check photo coverage of an AOI by group
fly_overlap(): Compute pairwise overlap between photo footprints

Download

fly_fetch(): Download airphoto files from BC Data Catalogue URLs

Georeference

Warp a scan onto its estimated footprint, with the black border masked.

fly_georef(): Georeference airphoto images to footprint polygons
fly_bearing(): Compute flight line bearing from consecutive airphoto centroids
fly_mask(): Mask the black frame border of an airphoto scan
fly_rotation_calibrate(): Measure a film roll's corner mapping from its own overlapping frames