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

A number of works using Unmanned Aerial Vehicles (UAV) have been taking advantage of the ADC Lite multispectral camera by Tetracam. The images acquired by the camera have been qualitatively and quantitatively analyzed by many authors without previously correcting radiometric distortions, which is mandatory for practical and academic purposes. In this paper we made it clear that distortions such as the read noise, pixels non-uniform response to the incoming radiance and the vignetting effect are present in the ADC images. Beside these distortions, the weighting values in the Color Processing File (CPF), provided by Tetracam and used to interpolate the Bayer filter, delivers wrong bright values in a number of situations, causing information loss, particularly in the Red band, producing very high frequencies (~105) of black saturated pixels. The correction of these effects and remaining noise artifacts in the image frame (caused by the color interpolation) is mandatory when working with them, which is clearly demonstrated in this paper when we calculated a normalized band ratio from the raw and corrected images.

ANÁLISE DE DISTORÇÕES RADIOMÉTRICAS DE IMAGENS DA CÂMERA TETRACAM ADC LITE