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parevalo / gee-ccdc-tools

Tools and Earth Engine apps to interact with the outputs from the CCDC algorithm
MIT License
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Question about CCDC：when using Landsat and sentinel-2 data to implement the change detection，I got very different result. #4

Closed cdgaccount closed 2 years ago

cdgaccount commented 3 years ago

hi, I used the code that is from gee-ccdc-tools . I just change "getLandsat" to "getS2" for the change detection.I got very different result, like this: 屏幕截图 2021-09-10 224907

the landsat code: link the sentinel-2 code:link

Please give me advice on any aspect of this. thank you very much！

cdgaccount commented 3 years ago

Now I know the actual time of change. And the result of change detection using Landsat data is right, the result of change detection using sentintl-2 data is wrong.They are about a year apart. Why?

parevalo commented 2 years ago

CCDC will detect breaks for input datasets of different kinds, but there is never a guarantee that the same breaks will be detected, or that they will be detected at the same time.