EXTRACTION OF CLOUD HEIGHTS FROM SENTINEL-2 MULTISPECTRAL IMAGES

Abstract. Investigation of the focal plane assembly Sentinel-2 satellites show slight delays in acquisition time different bands on CCD lines about 0.5 to 1 second. This effect was already exploited detection moving objects very high resolution imagery as from WorldView-2 or -3 and also for imagery. In our study we use four 10-m-bands 2, 3, 4 8 (blue, green, red near infrared) Sentinel-2. level 1C processing each spectral band gets orthorectified separately same digital elevation model. So one hand ground experience a shift between bands. On other not depending height object above ground. this work second effect. Analysis cloudy scenes small shifts only two pixels clouds new method based algorithms deriving dense models stereo developed derive cloud heights images parallax 10-m-bands. After detailed description it is applied results are cross-checked using shadows together with position sun at time.