نتایج جستجو برای: envi
تعداد نتایج: 946 فیلتر نتایج به سال:
sample is a serpentine conglomerate in a carbonate matrix. A) False color image highlighting spectral diversity; polygons define the regions averaged for endmember spectra. B) Result of minimum distance supervised classification in ENVI. C) Averaged endmember spectra from (A), with USGS reference spectra. IDENTIFICATION AND QUANTIFICATION OF MINERAL ABUNDANCE FROM VSWIR REFLECTANCE SPECTRA IN C...
A solid-phase extraction (SPE) method, coupled with HPLC/DAD and GC/FID analysis has been developed for the simultaneous determination of simazine, atrazine and propazine in water samples. The compounds of interest were enriched on Envi-carb SPE tubes. The recoveries for simazine, atrazine and propazine from spiked Nanopure water were 101 5.6 %, 99 4.9 % and 96 5.7 %, respectively. The detectio...
In this paper, a Zernike moments-based descriptor is used as a measure of shape information for the detection of buildings from Very High Spatial Resolution (VHSR) satellite images. The proposed approach comprises three steps. First, the image is segmented into homogeneous objects based on the spectral and spatial information. MeanShift segmentation method is used for this end. Second, a Zernik...
Individual tree mapping in the forest is usually done by several techniques such as the sequential target and point origin mapping. Generally, the estimation of standing timber volume operation is considered a difficult task as ground survey is expensive. Most of this task is being done on the ground and takes a lot of time to be accomplished. However, the use of airborne remote sensing such as...
growing tendency for urbanization and rapid development of the cities has resulted in urban neighborhoods obstructing the access of each other to the natural sources e.g. solar energy, natural ventilation. sunlight as the main part of input energy in urban energy balance equation and natural lighting is of vital importance. this paper attempts to achieve an optimum morphology for residential bl...
درحالحاضر،تغییراتکاربریاراضی بهیکمشکلعمده زیست محیطیتبدیلشدهزیرابدون برنامهریزی اصولی وباتوجهاندکبهاثرات مخربزیست محیطیآنهاصورتمیگیرد. ازآنجاکهتغییراتدرکاربریاراضیدرسطوح وسیعوگستردهصورتمیگیرد،بنابراینتکنولوژیسنجشازراهدورابزاریضروری برایارزیابیوسعتومیزانتغییراتپوششاراضیاست. در تحقیق حاضر تغییرات کاربری اراضی منطقه بم در یک دوره زمانی 18 ساله مورد ارزیابی قرار گرفت. برای انجام تحقیق از تصاوی...
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