Quantization Class Reference

#include <Quantization.h>

Detailed Description

Quantization parameters.

As opposed to CFITSIO, EleFits creates lossless algorithms by default, including for floating point values. Lossy compression has to be manually enabled by setting a non-null quantization level. The level can be set either globally, as a double, or tile-wise, relative to the noise level:

Quantization disabled;
Quantization absolute(1);
Quantization relative(Tile::rms / 4);

When quantization is enabled, dithering is applied by default to all pixels.

Public Types
enum class	Dithering {   None ,   NonZeroPixel ,   EveryPixel }
	Quantization dithering methods. More...

Public Member Functions
	Quantization ()
	Default, lossless compression constructor.
	Quantization (Scaling level)
	Level-based constructor. More...
	Quantization (Scaling level, Dithering method)
	Full constructor.
Dithering	dithering () const
	Get the dithering method for the quantization.
Quantization &	dithering (Dithering method)
	Set the dithering method.
const Scaling &	level () const
	Get the quantization level.
Quantization &	level (Scaling level)
	Set the quantization level.
	operator bool () const
	Check whether quantization is enabled.
bool	operator!= (const Quantization &rhs) const
	Check whether two quatizations are different.
bool	operator== (const Quantization &rhs) const
	Check whether two quatizations are equal.

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The documentation for this class was generated from the following file:

• EleFitsData/EleFitsData/Quantization.h