auto_chg_detect: Perform change detection for two Landsat CDR surface...
In azvoleff/teamlucc: TEAM land use and cover change data processing toolkit

Description Usage Arguments Value References

This image automates the change detection process using the Change Vector Analysis in Posterior Probability Space (CVAPS) algorithm. The threshold for change/no-change mapping is determined using Huang's algorithm (see threshold or can be specified manually. First the images should be classified using the auto_classify function (or any other classification approach that yields per-pixel probabilities of class membership).

1 2	auto_chg_detect(t1_classes, t1_probs, t2_probs, output_path, output_basename, ext = "tif", overwrite = FALSE, chg_threshold = NULL, notify = print)

`t1_classes`	cover classes as output from `auto_classify_image` for time 1 image
`t1_probs`	per class probabilities as output from `auto_classify_image` for time 1 image
`t2_probs`	per class probabilities as output from `auto_classify_image` for time 2 image
`output_path`	the path to use for the output
`output_basename`	the base filename for output files from `auto_chg_detect` (without an extension)
`ext`	file extension to use when saving output rasters (determines output file format).
`overwrite`	whether to overwrite existing files (otherwise an error will be raised)
`chg_threshold`	the threshold to use determining change and no-change areas from the change magnitude image (see `chg_mag`. If `NULL`, then `threshold` will be used to dermine this threshold value automatically. A threshold in the range of .75-1 is recommended as a starting point.
`notify`	notifier to use (defaults to `print` function). See the `notifyR` package for one way of sending notifications from R. The `notify` function should accept a string as the only argument.

nothing - used for the side effect of performing change detection

Chen, J., X. Chen, X. Cui, and J. Chen. 2011. Change vector analysis in posterior probability space: a new method for land cover change detection. IEEE Geoscience and Remote Sensing Letters 8:317-321.

azvoleff/teamlucc documentation built on May 11, 2019, 5:19 p.m.