问题描述
我想做变化检测。现在,我正在尝试使用 GEE 中的 Sentinel-2 时间序列运行 ccdc(连续变化检测和分类)。>
但是,控制台显示警告说:
**Error: Internal error**
这是我的代码:
var studyRegion = roi;
Map.centerObject(studyRegion,13);
// First load the API file
var utils = require('users/parevalo_bu/gee-ccdc-tools:ccdcUtilities/api');
// Change detection parameters
var changeDetection = {
breakpointBands: ['GREEN','RED','NIR','SWIR1','SWIR2','NDVI'],tmaskBands: ['GREEN','SWIR2'],minObservations: 6,chiSquareProbability: .99,minNumOfYeaRSScaler: 1.33,dateFormat: 2,lambda: 20/10000,maxIterations: 25000
};
var params = {
start: '2016-01-01',end: '2020-12-31',ChangeDetection: changeDetection,StudyRegion: studyRegion
};
////// Filter by date and a location
var filteredSentinel = utils.Inputs.getS2()
.filterBounds(params.StudyRegion)
.filterDate(params.start,params.end)
.map(function(img){
return img.addBands(img.normalizedDifference(['NIR','RED']).rename('NDVI'))
});
params.ChangeDetection['collection'] = filteredSentinel;
//ccdc
var results = ee.Algorithms.TemporalSegmentation.Ccdc(params.ChangeDetection);
print(filteredLandsat.size());
print('CCDCRESULTS',results);
//export
Export.image.toAsset({
image: results,description: "CCDC_sentinel_2",assetId: "CCDC_sentinel_2",scale: 10,region: studyRegion,maxPixels: 1e13
});
非常感谢!
解决方法
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