Unmanned aerial vehicle (UAV) imaging provides the ability to obtain high-resolution images at a lower cost than satellite imagery and photography. However, multiple UAV need be mosaicked of large areas, resulting multispectral image mosaics typically contain seam lines. To address this problem, we applied irradiance, vignette, bidirectional reflectance distribution function (BRDF) filters performed field work using DJI Mavic 3 Multispectral (M3M) camera collect data. We installed calibrated...

Accurate measurement of the tree height and canopy cover density is important for forest biomass management. Recently, Light Detection Ranging (LIDAR) Unmanned Aerial Vehicle (UAV) images have been used to estimate a stands. More so, UAV systems with autopilot functions, affordable Global Navigation Satellite System (GNSS) Inertial Measurement Unit (IMU) created new possibilities, aided by available photogrammetric programs. In this study, we investigated possibility data collection methods...

The bidirectional reflectance distribution function (BRDF) is important for estimating the physical properties of a surface in remote sensing. In laboratory, BRDF can be estimated quickly and accurately using goniometer, but it very difficult to operate field. purpose this study was evaluate whether with reasonable accuracy an unmanned aerial vehicle (UAV) multispectral camera possible Hemispherical created from images taken UAV camera. ground targets were four calibrated reference tarps...

A radiometric characterization of the Korea Multi-Purpose Satellite (KOMPSAT) Series multispectral imagery was performed by Aerospace Research Institute (KARI) and Pukyong National University Remote Sensing Group (PKNU RSG). This paper presents a vicarious calibration KARI PKNU RSG in 2012 2014. Correlations between top-of-atmosphere (TOA) radiances spectral band responses KOMPSAT-3 sensors at Zuunmod, Mongolia Goheung, South Korea, were significant for bands. coefficients all bands...

Kim, J.; Choi, C., and Hwang, 2017. Forecasting the potential effects of climatic land-use changes on shoreline variation in relation to watershed sediment supply transport.This study investigated future shorelines Hoeya River estuary, Korea. Historical variations were determined along Jinha Solgae Beaches for period 1975–2013 using Digital Shoreline Analysis System. Sediments during periods simulated this under Representative Concentration Pathways 4.5 8.5 scenarios soil water assessment...

In order to address issues related agricultural productivity and sustainability caused by climate change, the importance of observation monitoring is increasing.Remote sensing data at field, county, national levels are being collected using various remote platforms.In particular, drone imagery becoming an attractive platform with high resolution compared existing satellite aerial imagery, allowing for desired regions specific times, thus enabling immediate responses environmental...

Abstract. Smartphone can not only be operated under 3G network environment anytime and anyplace but also cost less than the existing photogrammetric UAV since it provides high-resolution image, 3D location attitude data on a real-time basis from variety of built-in sensors. This study is aimed to assess possibility smartphone as payload for system. Prior such assessment, smartphone-based system application was developed, through which obtained using both static dynamic conditions....

Many countries are increasing their research on monitoring technology to identify and systematically manage various domestic changes. In particular, the need for remote is in response climatic disasters, such as flooding, storms, rising tides caused by global warming. We developed a smartphone-based environmental system that enables any place at time. The overall composed of 24-hour imaging system, information management receive information, stereo image rectification software provides lens...

This paper presents absolute radiometric calibration coefficients (gains) that explain the relationship between digital number (DN) and at-sensor radiance for multispectral camera (MSC) on Korea's first high-resolution satellite (KOMPSAT-2). Absolute was performed using a reflectance-based method. In addition, suitability of vicarious results from radiance- validations analyzed with reference to IKONOS QuickBird images. The latter are spectrally similar KOMPSAT-2 images have been validated...

The aim of this study was to analyze the effect a policy aimed at removal greenbelt on future urban growth. SLEUTH model applied Seoul Metropolitan Area, South Korea, predict growth under three different scenarios. accuracy verified using historical data with ROC and Kappa statistics 82.6 76.3%, indicating reasonable accuracy. In scenarios, suburban development grew in proportion degree reduction greenbelt. two cities inner part were integrated into metropolitan area. scenario 3, complete...

Radiometric calibration of satellite imaging sensors should be performed periodically to account for the effect sensor degradation in space environment on image accuracy. In this study, we vicarious radiometric calibrations (relying situ data) multispectral Korea multi-purpose satellite-3 and -3A (KOMPSAT-3 -3A) adjust existing conversion coefficients according time delay integration (TDI) adjustments over time. The Second Simulation a Satellite Signal Solar Spectrum (6S) radiative transfer...

Soil moisture (SM) is a crucial hydrologic factor that affects the global cycle of energy, carbon, and water, as well plant growth crop yield; therefore, an accurate estimate SM important for both environment agriculture. Satellite-based data have been provided by National Aeronautics Space Administration (NASA)’s Moisture Active Passive (SMAP) European Agency (ESA)’s Ocean Salinity (SMOS) satellite missions, but these are based on passive microwave sensors, which limited spatial resolution....

In precision agriculture, vegetation and soil are monitored by multispectral sensors that can observe outside the visible bands. contrast to satellites manned aircraft, unmanned aerial vehicles (UAVs) allow anyone easily acquire near-real time data at a reasonable price. However, UAV images do not account for anisotropic reflectance solar irradiance from ground surface, so extracting of is difficult. To solve this problem, study developed bidirectional distribution function (BRDF) expresses...