imtools - imtools tools section

These tools deal only with FITS format images. See Byte-Ordering, FITS and Imcat regarding imcat's handling of FITS images.

acf - calculates 2-D autocorrelation function of a fits image

album - paste fits images into a larger image

asciitofits - converts an ascii image to fits format

boxavg - boxcar smooth FITS image of arbitrary dimensionality

bscale - set or check BSCALE, BZERO header values in FITS file

changesex - switch byte order of a FITS file

colorbox - generate example color image

colorize - convert gray fits file to rgb colormapped version

combineimages - create mean, median, avsigclip of a stack of images

combinestamps - take mean, median etc of a stack of images

complex - perform operations on complex images

convolve - convolve one fits file with another

cycleimage - translate a FITS image

fft - take the fast fourier transform of a fits image

fillcores - patch up holes in stellar cores

fitstoascii - convert a fits image to ascii format

fitstocat - make lc format list of fits image values

fitstomovie - convert a 3 dimensional FITS file to a movie file

flatten - convert 3-D fits to 2_D

flip - reflect or rotate a fits image

getplane - extracts an image plane from multi-dimensional fits image

getplanes - extracts a set of planes from multi-dimensional fits image

grad - take the gradient of a fits image

growmagic - expand MAGIC regions of an image

helicalscan - generate a helical scan of a 2D FITS image

ic_stream - apply simple arithmetic to a stream of images

imhead - extract fits header

invgrad - take the inverse gradient of a FITS image

kappa2stuff - generate shear etc from surface density

lensmap - map a source image to a target image

linesmode - calculate mode of rows/cols of a fits file

logscaleimage - scale image for printing

make_image - generates a mock CCD image

makecolourimage - combines 2 or 3 images into a color fits image

makesubimage - extracts a subimage from a fits file

mapbynumericdef - map image using numerical deflection func

mask - set abnormal pixels in sky-flat to MAGIC

maskfits - set pixels in rectangles to MAGIC

overscancorr - dark subtraction using overscan region

pixdist - compute histogram of pixel values in a FITS image

projectfits - average over rows, cols etc of a FITS file

scrunch - demagnify image by factor 2

simulate - generate mock fits image

sliceimage - cut a 2-D FITS image into a grid of sub-sections

smooth - spatially filter a fits image

spinflip - apply 90 degree rotations or parity flips to FITS image

stackplanes - concatenate a set of fits files to multidimensional image

stats - calculate simple statistics for an image

statstocat - convert stats output to lc cat format

transformimage - apply spatial linear transformation to a FITS image

translate_fft - translate an image using 'sinc-interpolation'

transposebits - swap order of bits and numbers in a FITS file

unpackextensions - extract extensions from multi-part FITS file

unscrunch - expand a FITS image by a factor 2

warpimage - apply spatial transformation to a FITS image

Nick Kaiser -- kaiser@hawaii.edu