Smooths thermal data

tuav_smooth() smooths the thermal dataset to avoid large fluctuations. Two methods are possible: (i) based on a provided high temporal resolution air temperature dataset or (ii) empirical smoothing using the temperatures of the images.

Usage

tuav_smooth(thermal_uav, method = "image", T_air = NA, smooth_length = NA)

Arguments

thermal_uav

ThermalUAV object retrieved by previous functions (e.g.: tuav_create()). Note in order to smooth the thermal data, tuav_correct should be ran at first

method

One of the two methods: (i) "T_air" the dataset is smoothed based on a high resolution air temperature dataset or (ii) "image" smoothing is done based on the average image temperature, default is "image"

T_air

For method "T_air": the air temperature in deg C during the flight. Can be a vector of same length as the number of images or a data.frame containing temperature data ("T_air") and datetime ("datetime") in UTC ("%d.%m.%Y %H:%M:%OS" format). If already provided in tuav_correct(), you can leave it black here. Default is NA

smooth_length

(numerical) is the amount of images that will be taken into account to smooth the temperature. Default is NA where the smooth length is the number of overlapping images. The smooth length is ignored for method "T_air".

Value

This function returns an updated ThermalUAV object with smoothed ThermalData