# Thermal Image Analysis

## Documentation for package ‘Thermimage’ version 4.1.3

- DESCRIPTION file.

## Help Pages

Thermimage-package | Handles thermal image data input and conversion to temperature using established physical equations.
airdensity | Returns the density of air for a given air temperature.
airspecificheat | Specific heat capacity of air
airtconductivity | Thermal conductivity of air.
airviscosity | Returns air viscosity for a given air temperature.
areacone | Provides the surface are of a cone
areacylinder | Provides the surface area of a cylinder.
areasphere | Provides the surface area of a sphere.
convertflirJPG | Convert FLIR jpg into 16 bit grayscale file using shell commands.
convertflirVID | Convert FLIR CSQ or SEQ into PNG or AVI, using shell commands.
cumulDiff | Cumulative difference sum function for use with frame by frame difference dataframe
diffFrame | A frame difference function for subtracting adjacent frames from an imported thermal image sequence.
ffmpegcall | A simplified wrapper function calling ffmpeg
flip.matrix | Flips a matrix 'left-right'. Used in re-arranging image data for plotting properly in R.
flirpal | Colour palette extracted from FLIR thermal camera files
flirsettings | Extracts meta tag information from a FLIR JPG image
forcedparameters | Parameters required for forced convection equation.
frameLocates | Find the frame read start positions in a FLIR SEQ video file.
freeparameters | Parameters required for free convection equation.
getFrames | Extract raw binary thermal from thermal image file.
getTimes | Extracts time values from binary imported thermal video file
glowbowpal | Colour palette extracted from FLIR thermal camera files
Grashof | Determines the Grashof number for an object
grey10pal | Colour palette extracted from FLIR thermal camera files
grey120pal | Colour palette extracted from FLIR thermal camera files
greyredpal | Colour palette extracted from FLIR thermal camera files
hconv | Convective heat coefficient (W/m2/oC)
hotironpal | Colour palette extracted from FLIR thermal camera files
ironbowpal | Colour palette extracted from FLIR thermal camera files
Ld | Estimates downward facing longwave radiation (W/m2)
locate.fid | Returns the index locations that match vector fid within data vector.
Lu | Estimates upward facing ground radiation (W/m2)
Lw | Estimates downward facing longwave radiation (W/m2)
meanEveryN | Calculate the mean every nth data point.
medicalpal | Colour palette extracted from FLIR thermal camera files
midgreenpal | Colour palette extracted from FLIR thermal camera files
midgreypal | Colour palette extracted from FLIR thermal camera files
mikronprismpal | Colour palette extracted from Mikron thermal camera files
mikroscanpal | Colour palette extracted from FLIR thermal camera files
mirror.matrix | Mirrors a matrix upside-down. Used in re-arranging image data for plotting properly in R.
nameleadzero | Add leading zeros to character for easy sequential naming of filenames.
Nusseltforced | Nusselt number for forced convection.
Nusseltfree | Nusselt number for free convection.
palette.choose | Choose a colour palette for gradient filling thermal image files.
plotTherm | Plot thermal image data for visualisation purposes.
Prandtl | Returns the Prandtl number
qabs | Estimates the absorbed solar and infrared radiation (W/m2)
qcond | Estimates the area specific heat transfer by conduction (W/m2)
qconv | Estimates the area specific heat transfer by convection (W/m2)
qrad | Estimates the area specific heat transfer by radiation (W/m2)
rainbow1234pal | Colour palette extracted from FLIR thermal camera files
rainbowpal | Colour palette extracted from FLIR thermal camera files
raw2temp | Converts raw thermal data into temperature (oC)
readflirJPG | Reads an image from a FLIR JPG file into an integer array.
Reynolds | Calculates the Reynolds number.
rotate180.matrix | Rotate a matrix by 180 degrees. Used for adjusting image plotting in R.
rotate270.matrix | Rotate a matrix by 270 degrees counterclockwise (or 90 degree clockwise). Used for adjusting image plotting in R.
rotate90.matrix | Rotate a matrix by 90 degrees counterclockwise (270 degrees clockwise). Used for adjusting image plotting in R.
samp.image | A sample thermal image to demonstrate thermal colour palette use.
slopebypoint | Returns the slope from linear regression with x values as equally spaced 1:length
slopeEveryN | Calculate the slope every nth data point.
StephBoltz | The Stephan Boltzman constant.
Te | Operative temperature estimate.
temp2raw | Converts temperature (oC) to raw thermal data
Teq | Estimates equivalent temperature.
Tground | Estimates ground temperature from ambient temperature and solar radiation.
Thermimage | Handles thermal image data input and conversion to temperature using established physical equations.
thermsum | Return summary of thermal image data.
thermsumcent | Summary thermal calculations on a centrally located region of interest from a thermal image dataset
writeFlirBin | Saves thermal image data to a binary file
yellowpal | Colour palette extracted from FLIR thermal camera files