English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The article presents a set of initial results of a quality assessment study of 2 different types of sensors mounted on an unmannedaerial vehicle, carried out over an especially designed and constructed test field. The PIQuAT (Portable Imagery Quality AssessmentTest Field) field had been designed especially for the purposes of determining the quality parameters of UAV sensors, especially interms of the spatial, spectral and radiometric resolutions and chosen geometric aspects. The sensor used include a multispectralframing camera and a high-resolution RGB sensor. The flights were conducted from a number of altitudes ranging from 10 m to 200m above the test field. Acquiring data at a number of different altitudes allowed the authors to evaluate the obtained results andcheck for possible linearity of the calculated quality assessment parameters. The radiometric properties of the sensors were evaluatedfrom images of the grayscale target section of the PIQuAT field. The spectral resolution of the imagery was determined based on anumber of test samples with known spectral reflectance curves. These reference spectral reflectance curves were then compared withspectral reflectance coefficients at the wavelengths registered by the miniMCA camera. Before conducting all of these experimentsin field conditions, the interior orientation parameters were calculated for the MiniMCA and RGB sensor in laboratory conditions.These parameters include: the actual pixel size on the detector, distortion parameters, calibrated focal length (CFL) and thecoordinates of the principal point of autocollimation (miniMCA - for each of the six channels separately

the international archives of the photogrammetry, remote sensing and spatial information sciences/international archives of the photogrammetry, remote sensing and spatial information sciences

PRELIMINARY RESULTS FROM THE PORTABLE IMAGERY QUALITY ASSESSMENT TEST FIELD (PIQuAT) OF UAV IMAGERY FOR IMAGERY RECONNAISSANCE PURPOSES