uavimg_info: Extract info from UAV Images
In UCANR-IGIS/uavimg: Drone Image Utilities
Description
Usage
Arguments
Details
Value
See Also
Description
Extracts info from geotagged images taken from a drone
Usage
1
2
Arguments
img_dirs
Directory(s) where the image files reside
exiftool
The path to the exiftool command line tool (omit if on the OS path)
csv
The file name of a new csv file where the exif data will be saved (omit to make a temp one)
alt_agl
The elevation above ground level in meters (optional for images with the relevative altitude saved)
fwd_overlap
Whether or not to compute the amount of overlap between one image and the next, T/F
cameras
Location of the cameras.csv file. Is NULL the package csv file will be used.
quiet
Don't show messages
Details
This will read the EXIF header data from a directory of image files, and put out the centroids and image footprints on the ground. Mapping image locations requires that the images have geostamps. In addition, mapping the image footprints requires that the camera parameters are known, and the flight elevation about ground level is either saved in the EXIF info, or provided in the alt_agl argument (in meters). If alt_agl is passed, it will override any elevation data in the EXIF info.
Camera parameters are saved in a csv file called cameras.csv. To see where this is saved, type system.file("cameras/cameras.csv", package="uavimg"). If your camera is not detected, please contact the package author or create an issue on GitHub.
This function uses a free command line tool called EXIFtool to read the EXIF data, which can be downloaded
from http://www.sno.phy.queensu.ca/~phil/exiftool/. After you download it, rename the executable file,
'exiftool(-k).exe' to 'exiftool.exe', and save it somewhere on your system's PATH (e.g., c:\Windows).
Value
A named list with three elements: 1) SpatialPointsDataFrame with the image centroids, and 2) a SpatialPolygonsDataFrame of the image footprints, and 3) the image directory. An HTML report of the images can be created with uavimg_report.
See Also
uavimg_report, uavimg_exp
UCANR-IGIS/uavimg documentation built on July 13, 2020, 9:35 p.m.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Description Usage Arguments Details Value See Also
Description
Extracts info from geotagged images taken from a drone
Usage
1 2 |
Arguments
img_dirs |
Directory(s) where the image files reside |
exiftool |
The path to the exiftool command line tool (omit if on the OS path) |
csv |
The file name of a new csv file where the exif data will be saved (omit to make a temp one) |
alt_agl |
The elevation above ground level in meters (optional for images with the relevative altitude saved) |
fwd_overlap |
Whether or not to compute the amount of overlap between one image and the next, T/F |
cameras |
Location of the cameras.csv file. Is NULL the package csv file will be used. |
quiet |
Don't show messages |
Details
This will read the EXIF header data from a directory of image files, and put out the centroids and image footprints on the ground. Mapping image locations requires that the images have geostamps. In addition, mapping the image footprints requires that the camera parameters are known, and the flight elevation about ground level is either saved in the EXIF info, or provided in the alt_agl argument (in meters). If alt_agl is passed, it will override any elevation data in the EXIF info.
Camera parameters are saved in a csv file called cameras.csv. To see where this is saved, type system.file("cameras/cameras.csv", package="uavimg"). If your camera is not detected, please contact the package author or create an issue on GitHub.
This function uses a free command line tool called EXIFtool to read the EXIF data, which can be downloaded from http://www.sno.phy.queensu.ca/~phil/exiftool/. After you download it, rename the executable file, 'exiftool(-k).exe' to 'exiftool.exe', and save it somewhere on your system's PATH (e.g., c:\Windows).
Value
A named list with three elements: 1) SpatialPointsDataFrame with the image centroids, and 2) a SpatialPolygonsDataFrame of the image footprints, and 3) the image directory. An HTML report of the images can be created with uavimg_report.
See Also
uavimg_report, uavimg_exp
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Embedding an R snippet on your website
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.