Timely and efficient monitoring of crop phenology at a high spatial resolution are crucial for the precise and effective management of agriculture. Recently, satellite-derived vegetation indices (VIs), such as the Normalized Difference Vegetation Index (NDVI), have been widely used for the phenology detection of terrestrial ecosystems. In this paper, a framework is proposed to detect crop pheno...

This paper shows the potential of LIDAR for extracting buildings and other objects from medium resolution satellite imagery. To that end, the study integrated multispectral and LIDAR elevation data in a single imagery file and then classified it using the Support Vector Machine. To determine the method’s potential, the study used a SPOT5 satellite from an area situated southeast of Madrid, Spai...

Traditional techniques to map vegetation communities are by aerial photography interpretation and intensive field sampling. Semi-automated methods, including pixel and object-based image classification, demonstrate potential to accurately map vegetation communities, however, there is a lack of comparative research. This study is a component of a broader research project that compares several te...

One layer of global geographic database Reference3D® is an image mosaic (5m resolution) made exclusively from panchromatic SPOT5-HRS images. In order to improve Reference3D® production line, in particular SPOT5 HRS images mosaicking step, a new strategy of radiometric block adjustment of satellite images was developed, implemented and tested at French mapping agency IGN. By analogy with “geomet...

The lacking of 1:50000 topographic maps in western China is inconvenient to the national economic development. The rapid development of space technology, computer technology and information technology provides technological support for the remote sensing application. In addition, the enhancement of ability of obtaining hyper-resolution data provides data for feature extraction of ground objects...

The purpose of this project is to test High Resolution Stereoscopic (HRS) data of SPOT5. This project is done in the framework of the “HRS study Team” international test, supported by ISPRS-CNES. The Digital Elevation Model (DEM) was derived from the HRS data and was evaluated by using a 3D reference data set. The study site for HRS data is located in Manosque, France. It is a countryside lands...

سپیدایی از ﭘﺎراﻣﺘﺮﻫﺎی ﻣﻮرد ﻧﻴﺎز در ﻣﻄﺎﻟﻌﺎت زﻳﺴﺖ‌ﻣﺤﻴﻄﻲ و آب‌و‌ﻫﻮاﻳﻲ به‌شمار می‌رود؛ ازاین‌رو، بررسی رفتار زمانی مکانی آن می‌تواند ابزاری برای شناخت تغییرات محیطی باشد. ﺳﻨﺠﻨﺪة مودیس ﺳﻄﺢ زﻣﻴﻦ را به‌طور ﻣﺴﺘﻤﺮ، ﻣﻘﻴﺎﺳﻲ ﺟﻬﺎﻧﻲ ﺑﺎ ﻗﺪرت ﺗﻔﻜﻴﻚ ﻣﻜﺎﻧﻲ مناسب ﺗﻮﻟﻴﺪ دسترس پژوهشگران ﻗﺮار داده است. این پژوهش، واکاوی موانع برداشت/ دیدبانی ایران‌زمین، نخست داده‌های روزانة سنجندة محدودة ایران، بازة 1/1/1379 تا 10/1...

Although they correspond to an important fraction of the total area of mountain glaciers (33000 km out of 546000 km), Himalayan glaciers and their mass balance are poorly sampled. For example, between 1977 and 1999, the average area surveyed each year on the field was 6.8 km only. No direct mass balance measurement is available after 1999. To contribute to fill this gap, we use remote sensing d...

Russian Doll Search (RDS) is a well-known algorithm for combinatorial optimization. In this paper we extend it from mono-objective to multi-objective optimization. We demonstrate its practical applicability in the challenging multipleorbit SPOT5 instances. Besides being much more efficient than any other alternatives, multi-objective RDS can solve an instance which could not have been solved pr...