Cloud shadow removal for optical satellite data

A procedure for the detection and removal of cloud shadow from AVHRR data over land

Although the accurate detection of cloud shadow in AVHRR scenes is important for many atmospheric and terrestrial applications, relatively little work in this area has appeared in the literature. This paper presents a new multispectral algorithm for cloud shadow detection and removal in daytime AVHRR scenes over land. It uses a combination of geometric and optical constraints, derived from the ...

Thin cloud removal from single satellite images.

A novel method for removing thin clouds from single satellite image is presented based on a cloud physical model. Given the unevenness of clouds, the cloud background is first estimated in the frequency domain and an adjustment function is used to suppress the areas with greater gray values and enhance the dark objects. An image, mainly influenced by transmission, is obtained by subtracting the...

Intrinsic Images for Shadow Removal

The purpose of this report is to summarize the work done by a number of researchers over the course of a number of years related to creating illumination invariant images for the purpose of shadow removal. We will also discuss the experiments that were implemented in order to test the algorithm on consumer-grade digital cameras, and the results of these experiments.

Automated Production of Cloud-free and Cloud Shadow-free Image Mosaics from Cloudy Satellite Imagery

The humid tropical region is always under partial or complete cloud covers. As a result, optical remote sensing images of this region always encounter the problem of cloud covers and associated shadows. In this paper, an operational system for producing cloud-free and cloud shadow-free image mosaics from cloudy optical satellite imagery is presented. The inputs are several cloudy images of the ...

Cloud Extraction and Removal in Aerial and Satellite Images