套件：stiff（2.4.0-7 以及其他的）

convert scientific FITS images to the TIFF format

STIFF is a program that converts scientific FITS images to the TIFF format for illustration purposes. The main features of STIFF are:

 * Accurate reproduction of the original surface brightnesses and colours
 * Automatic or manual contrast and brightness adjustments
 * Automatic sky background intensity and colour balance
 * Adjustable colour saturation
 * Colour-friendly gamma correction capabilities
 * One or three input channels: gray-scale or true colour output
 * Output with 8 or 16 bits per component
 * Pixel rebinning and x/y flip options
 * Support for arbitrarily large input and output images on standard
   hardware (BigTIFF support)
 * Support for tiled, multiresolution pyramids
 * Support for lossless and lossy compression methods
 * Multi-threaded code with load-balancing to take advantage of multiple
   cores and processors.
 * XML VOTable-compliant output of meta-data.

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