Journal of Remote Sensing & GIS
Volume 4, Issue 2 (2013)
Published
Table of contents
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Color Image Compression (Lossy) Through Selective Component Technique and Block Truncation Compression Technique
Abstract: This is a lossy image compression technique, where image is compressed by combination of two individual lossy compression techniques. The first technique is the selective component technique, where any one of the 3 components (R, G, B) is taken in a particular order preserving the colour information of the pixels in lossy manner; and the second technique is the block truncation technique (BTC) applied to the output of the previous …
Published in Journal of Remote Sensing & GIS · Vol. 4, Issue 2, 2013 · pp. 1–3 Read article
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Effect of Image Band Number and Band Multicollinearity on Mapping Accuracy of Tree Diversity and Evenness
Abstract: 800x600 Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Satellite imageries are increasingly being used in the studies of plant diversity due to cost effective wider spatial coverage. Multispectral or hyperspectral imageries consist of different spectral bands where some bands might be multicollineared among them and deemed redundant to use in the classification/analysis. This study investigates how the accuracies of maps of tree diversity and evenness of an area …
Published in Journal of Remote Sensing & GIS · Vol. 4, Issue 2, 2013 · pp. 14–22 Read article
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Extraction of High Resolution DEM from Cartosat-1 Stereo Imagery using Rational Math Model and Its Accuracy Assessment for a Part of Snow Covered NW-Himalaya
Abstract: This paper reports the experiments carried out for extraction of DEMs from Cartosat-1 stereo imagery using stereo correlation technique for Manali region. The focus of this paper was to assess the accuracy of extracted DEM with respect to DGPS observations, DEM generated from digitized contours of Survey of India (SoI), 1:50,000 scale topographic map(converted to ellipsoidal height using egm2008 geoid model) as well as well-known freely available DEMs ASTER GDEM …
Published in Journal of Remote Sensing & GIS · Vol. 4, Issue 2, 2013 · pp. 23–34 Read article
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Glacier Volume Changes and Their Climatic Causes in Tirungkhad Basin Located in Western Himalaya
Abstract: Normal 0 false false false EN-IN X-NONE X-NONE In the Himalaya, a significant number of glaciers are shrinking due to climatic variations. Monitoring of these glaciers is important to assess future availability of water resources. However, Himalayan glaciers are normally difficult to monitor due to the rugged, mountainous terrain. Therefore, in the present study, Survey of India (SOI) topographical maps (1966) and Landsat datasets as ETM+ (2000, 2006) and TM …
Published in Journal of Remote Sensing & GIS · Vol. 4, Issue 2, 2013 · pp. 35–46 Read article
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DTM Generation and Avalanche Hazard Mapping using Large Format Digital Photogrammetric Data and Geomatics Technique
Abstract: The main objective of the study is Digital Terrain Model (DTM) generation from aerial photogrammetric data and identify and map the potential avalanche prone zones in Manali region. Avalanche is a dynamic hazardous phenomenon in the snow-bound mountainous terrain. Mapping of avalanche prone terrain is crucial to minimize the avalanche hazard. Nowadays, airborne data capturing technology, such as large-format Photogrammetry, has opened new vistas for the mapping of complex and …
Published in Journal of Remote Sensing & GIS · Vol. 4, Issue 2, 2013 · pp. 4–13 Read article
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Japanese encephalitis risk zone mapping using remote sensing data: A case study of Mid and Far- Western part of Nepal
Abstract: This study explores the usability of remotely sensed data and GIS technology to identify the impact of climatic/environmental variables and land use to Japanese Encephalitis (JE). JE is still a major health concern of Nepal. Since the first outbreak in 1978, its cases are reported in 54 districts out of 75. The climatic and environmental variables such as temperature, precipitation and land use (mainly paddy field) etc. are the main …
Published in Journal of Remote Sensing & GIS · Vol. 4, Issue 2, 2013 · pp. 47–55 Read article
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Regional Rice Yield Estimation by Integration of Spatial Technologies and Crop model
Abstract: This study investigates how spatial technologies like remote sensing and GIS (Geographic Information System) integrated with a crop growth model to estimate paddy rice yields. Two approaches were used to estimate rice yield one is from remote sensing images and another from soil, climate layers of GIS, linked to the crop model. Oryza2000 model was used as a crop model to link with these technologies. Results show that yield estimated …
Published in Journal of Remote Sensing & GIS · Vol. 4, Issue 2, 2013 · pp. 56–66 Read article