TY - JOUR
T1 - Automatic cloud-free image generation from high-resolution multitemporal imagery
AU - Han, Youkyung
AU - Bovolo, Francesca
AU - Lee, Won Hee
N1 - Publisher Copyright:
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).
PY - 2017/4/1
Y1 - 2017/4/1
N2 - The aim of this paper is to document the automatic reconstruction of clouds and their cast shadows for the generation of spontaneous cloud-free images from high-resolution multitemporal images. To apply the proposed technique, a cloud-free reference image, which has the same position as a target image acquired at a different time, is required. First, the cloud region in the target image is detected based on integration of thick and peripheral cloud candidate regions. Next, the detected cloud region is restored using the pixel values of the target image by considering their location relative to the reference images. Finally, the pixel values of the restored image are separately normalized to the values of the reference image to generate a natural-looking cloud-free image. Multitemporal KOMPSAT-2 high-resolution images are used to construct study sites for evaluation of the proposed method in diverse cloud-cover cases. The experimental results show that the proposed method can automatically generate cloud-free images from high-resolution multitemporal images with reasonable qualitative and quantitative performance.
AB - The aim of this paper is to document the automatic reconstruction of clouds and their cast shadows for the generation of spontaneous cloud-free images from high-resolution multitemporal images. To apply the proposed technique, a cloud-free reference image, which has the same position as a target image acquired at a different time, is required. First, the cloud region in the target image is detected based on integration of thick and peripheral cloud candidate regions. Next, the detected cloud region is restored using the pixel values of the target image by considering their location relative to the reference images. Finally, the pixel values of the restored image are separately normalized to the values of the reference image to generate a natural-looking cloud-free image. Multitemporal KOMPSAT-2 high-resolution images are used to construct study sites for evaluation of the proposed method in diverse cloud-cover cases. The experimental results show that the proposed method can automatically generate cloud-free images from high-resolution multitemporal images with reasonable qualitative and quantitative performance.
KW - cloud-free image
KW - high-resolution multitemporal images
KW - KOMPSAT-2
UR - http://www.scopus.com/inward/record.url?scp=85018787689&partnerID=8YFLogxK
U2 - 10.1117/1.JRS.11.025005
DO - 10.1117/1.JRS.11.025005
M3 - Article
AN - SCOPUS:85018787689
SN - 1931-3195
VL - 11
JO - Journal of Applied Remote Sensing
JF - Journal of Applied Remote Sensing
IS - 2
M1 - 025005
ER -