• Title/Summary/Keyword: Sensing Remote

Search Result 5,829, Processing Time 0.049 seconds

Pasture estimating with climate change over Mongolia using climate and NOAA/NDVI data

  • Erdenetuya, M.;Khudulmur, S.;Bolortsetseg, B.;Natsagdorj, L.;Batima, P.
    • Proceedings of the KSRS Conference
    • /
    • 2003.11a
    • /
    • pp.120-122
    • /
    • 2003
  • Geographical position and associated climatic influences can be a negative environmental condition that affects sustainable use of land resources, especially pastoral livestock production. Vegetation condition of the country is sensitively changes upon climate changes and human impacts. Within last 60 years data the annual air temperature has increased in 1.66 degrees in average and the total precipitation amount had almost no change. The main goal of this work is to relate climate change within last 20 years with pasture condition, estimated by NOAA/NDVI data set.

  • PDF

Regional Scale Rice Yield Estimation by Using a Time-series of RADARSAT ScanSAR Images

  • Li, Yan;Liao, Qifang;Liao, Shengdong;Chi, Guobin;Peng, Shaolin
    • Proceedings of the KSRS Conference
    • /
    • 2003.11a
    • /
    • pp.917-919
    • /
    • 2003
  • This paper demonstrates that RADARSAT ScanSAR data can be an important data source of radar remote sensing for monitoring crop systems and estimation of rice yield for large areas in tropic and sub-tropical regions. Experiments were carried out to show the effectiveness of RADARSAT ScanSAR data for rice yield estimation in whole province of Guangdong, South China. A methodology was developed to deal with a series of issues in extracting rice information from the ScanSAR data, such as topographic influences, levels of agro-management, irregular distribution of paddy fields and different rice cropping systems. A model was provided for rice yield estimation based on the relationship between the backscatter coefficient of multi-temporal SAR data and the biomass of rice.

  • PDF

Video Image Tracking Technique Based On Shape-Based Matching Algorithm

  • Chen, Min-Hsin;Chen, Chi-Farn
    • Proceedings of the KSRS Conference
    • /
    • 2003.11a
    • /
    • pp.882-884
    • /
    • 2003
  • We present an application of digital video images for object tracking. In order to track a fixed object, which was shoot on a moving vehicle, this study develops a shape-based matching algorithm to implement the tracking task. Because the shape-based matching algorithm has scale and rotation invariant characteristics, therefore it can be used to calculate the similarity between two variant shapes. An experiment is performed to track the ship object in the open sea. The result shows that the proposed method can track the object in the video images even the shape change largely.

  • PDF

FOREST MONITORING PROTOTYPE SYSTEM USING WEB MAPPING TECHNOLOGY

  • Kawahito, Shinobu;Kuroiwa, Kaori;Sobue, Shin-ichi;Ochiai, Osamu
    • Proceedings of the KSRS Conference
    • /
    • 2003.11a
    • /
    • pp.793-794
    • /
    • 2003
  • Forest fire monitoring prototype system was developed by National Development Agency of Japan (NASDA) and the Ministry of Agriculture, Forestry and Fisheries of Japan (MAFF) to verify the usefulness of interoperabile system to study new services of Earth observation satellite data distribution for a practical application. In this system, a standard interface of Web based GIS technology, OpenGIS Consortium (OGC) technology, was adopted. This system is also expected to encourage data sharing activities in Digital Asia Network (DAN) as a demonstration system.

  • PDF

Applicability Assessment of the Expanded Waste Glass Material as Planting Basis Using Ground-Based Remote Sensing

  • Hamamoto, R.;Gotoh, K.;Ikio, D.
    • Proceedings of the KSRS Conference
    • /
    • 2003.11a
    • /
    • pp.546-548
    • /
    • 2003
  • The expanded waste glass material is one of the recycling materials. We investigated whether the expanded waste glass material is useful as planting basis and effective as heat insulation. We examined the difference of the materials by using vegetation index and temperature. The combination of the improved soils and the improved glasses marked higher vegetation index than other mixture materials. Moreover, this combination material is excellent than other ones to heat insulation. Therefore, it suggests that the expanded waste glass material has high potential to be used as a material for planting basis.

  • PDF

On-Board Satellite MSS Image Compression

  • Ghassemian, Hassan;Amidian, Asghar
    • Proceedings of the KSRS Conference
    • /
    • 2003.11a
    • /
    • pp.645-647
    • /
    • 2003
  • In this work a new method for on-line scene segmentation is developed. In remote sensing a scene is represented by the pixel-oriented features. It is possible to reduce data redundancy by an unsupervised segment-feature extraction process, where the segment-features, rather than the pixelfeatures, are used for multispectral scene representation. The algorithm partitions the observation space into exhaustive set of disjoint segments. Then, pixels belonging to each segment are characterized by segment features. Illustrative examples are presented, and the performance of features is investigated. Results show an average compression more than 25, the classification performance is improved for all classes, and the CPU time required for classification is reduced by the same factor.

  • PDF

Hydrogeological Survey and Satellite Remote Sensing in the Dunhuang Area

  • Piao, Chunze;Tanimoto, Chikaosa;Koizumi, Keigo;Li, Zuixiong;Wang, Xudong;Guo, Qinglin
    • Proceedings of the KSRS Conference
    • /
    • 2003.11a
    • /
    • pp.444-446
    • /
    • 2003
  • Mogao Grottos are located at the eastern foot of the Mingsha Mountain, 25km southeast of Dunhuang City. The caves were excavated into the cliff on the west bank of the Daquan River. The wall paintings in the caves are subject to the severe deterioration generated by recrystallization of salt. It relates with the movement of water/moisture in rock formation. Through the satellite image analysis and geological survey it has been clarified that the movement of ground water is governed by the fault system. The geographical nature is specified by the aggressive tectonic movement from the south.

  • PDF

Effects of Spectral Transformations on Leaf C:N Ratio Inversion with Hyperspectral Data

  • Run-he, SHI;Da-fang, ZHUANG;Qiao-jing, QIAN;Zheng, NIU
    • Proceedings of the KSRS Conference
    • /
    • 2003.11a
    • /
    • pp.322-324
    • /
    • 2003
  • Leaf C:N ratio is a new factor in the field of biochemical inversion with hyperspectral data. Effects of common-used spectral transformations including log(R), log(1/R), 1/R, etc. from 400nm to 2490nm on its inversion are compared. Results show that their effects on statistical modeling are not apparent. Continuum removal is used on original reflectance in the range of 2030nm to 2220nm, in which exists an apparent absorption peak due to cellulose, lignin, protein, etc. The effect is distinctive and tends to improve the precision of C:N ratio inversion. Further, it is a robust and physically based transformation.

  • PDF

DETECTION OF FILLED RICE PADDY FIELDS IN SOUTHEAST ASIA

  • ISHITSUKA, Naoki;OHNO, Hiroyuki;SAKAMOTO, Toshihiro;OGAWA, Shigeo;SAITO, Genya;Magsud, Mehdiyev;Ugsang, Donald M.;YOKOYAMA, Ryuzo
    • Proceedings of the KSRS Conference
    • /
    • 2003.11a
    • /
    • pp.757-759
    • /
    • 2003
  • Understanding the area of the rice paddy fields is important, and suitable for it the remote sensing. SAR is effective to the monitor in Southeast Asia with the rainy season. The detection of the filled rice paddy fields by RADARSAT was tried in the north part of Bangkok Thailand, and in the Mekong river valley Cambodia, which ware the main rice production country in Southeast Asia. We get observation data by RADARSAT and fields all through a year around Bangkok. However, because the flood had occurred on the study area in 2002 observed, the detection only of the rice fields ware difficult.

  • PDF

Geometric analysis of mobile mapping images sequence

  • Kang, Zhizhong;Zhang, Zuxun
    • Proceedings of the KSRS Conference
    • /
    • 2003.11a
    • /
    • pp.183-185
    • /
    • 2003
  • Spatially referenced mobile mapping (MM) images contain rich information of man-made objects , e.g. road centerlines, buildings, light poles, traffic signs ,billboards and line trees etc. Therefore, the applications in transportation, urban 3D reconstruction, utility management are implemented increasingly. It’s a fundamental issue lies in MM image process that how to orient this image in the object space including interior orientation of camera and the exterior orientation of image. In this paper, the algorithm of automatic acquirement of DC (Digital Camera) parameters based on MM images is illustrated. And then, the mapping between image space and object space for MM images is described.

  • PDF