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Vegetation Change Tracker, an automated approach for reconstructing recent forest disturbance history using dense Landsat time series stacks.
The output is a 2D array per pixel containing 6 rows x N years. The output rows contain: input years, VCT landcover mask, magnitude in term of the UD composite, magnitude of distubance in B4, magnitude of distubance in NDVI, magnitude of distubance in dNBR.
See: Huang, C., Goward, S.N., Masek, J.G., Thomas, N., Zhu, Z. and Vogelmann, J.E., 2010. An automated approach for reconstructing recent forest disturbance history using dense Landsat time series stacks. Remote Sensing of Environment, 114(1), pp.183-198.
Collection from which to extract VCT disturbances, containing the bands: B3, B4, B5, B7, thermal, NDVI, DNBR, and COMP. This collection is expected to contain 1 image for each year, sorted by time.
landCover
ImageCollection
Collection from which to extract VCT masks. This collection is expected to contain 1 image for each image in the timeSeries, sorted by time.
maxUd
Float, default: 4
Maximum Z-score composite value for detecting forest.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-07-13 UTC."],[[["The Vegetation Change Tracker (VCT) automatically reconstructs forest disturbance history using dense Landsat time series stacks."],["VCT identifies disturbances by analyzing changes in spectral indices like NDVI, dNBR, and UD composite over time."],["The output provides a per-pixel disturbance magnitude for each year within the analyzed Landsat time series."],["Users can customize parameters like maximum UD composite value and minimum NDVI for forest detection."],["VCT requires input Landsat time series collections with specific bands, including B3, B4, B5, B7, thermal, NDVI, DNBR, and COMP."]]],[]]