Image Enhance Utilities in Lua [Image Processing]

Collaboration diagram for Image Enhance Utilities in Lua:

Defines
#define	imImageGamma(_image, _gamma)   { double params[1]; params[0] = _gamma; imProcessToneGamut(_image, _image, IM_GAMUT_POW, params); }
#define	imImageBrightnessContrast(_image, _bright_shift, _contrast_factor)   { double _params[2]; _params[0] = bright_shift; _params[1] = contrast_factor; imProcessToneGamut(_image, _image, IM_GAMUT_BRIGHTCONT, _params); }
#define	imImageLevel(_image, _start, _end)   { double _params[2]; _params[0] = _start; _params[1] = _end; imProcessToneGamut(_image, _image, IM_GAMUT_EXPAND, _params); }
#define	imImageEqualize(_image)   imProcessEqualizeHistogram(_image, _image)
#define	imImageNegative(_image)   imProcessNegative(_image, _image)
#define	imImageAutoLevel(_image, _percent)   imProcessExpandHistogram(_image, _image, _percent)

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Detailed Description

Operations are done in-place. Limitations are the same of the original functions.

See im_process_pnt.h

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Define Documentation

#define imImageGamma	(		_image,
			_gamma
	)			{ double params[1]; params[0] = _gamma; imProcessToneGamut(_image, _image, IM_GAMUT_POW, params); }

Same as imProcessToneGamut using IM_GAMUT_POW.

image:Gamma(gamma) [in Lua 5] 

#define imImageBrightnessContrast	(		_image,
			_bright_shift,
			_contrast_factor
	)			{ double _params[2]; _params[0] = bright_shift; _params[1] = contrast_factor; imProcessToneGamut(_image, _image, IM_GAMUT_BRIGHTCONT, _params); }

Same as imProcessToneGamut using IM_GAMUT_BRIGHTCONT.

image:BrightnessContrast(bright_shift, contrast_factor: number)   [in Lua 5] 

#define imImageLevel	(		_image,
			_start,
			_end
	)			{ double _params[2]; _params[0] = _start; _params[1] = _end; imProcessToneGamut(_image, _image, IM_GAMUT_EXPAND, _params); }

Same as imProcessToneGamut using IM_GAMUT_EXPAND.

image:Level(start, end)  [in Lua 5] 

#define imImageEqualize

(

_image

)

imProcessEqualizeHistogram(_image, _image)

Same as imProcessEqualizeHistogram.

image:Equalize()  [in Lua 5] 

#define imImageNegative

(

_image

)

imProcessNegative(_image, _image)

Same as imProcessNegative. Also same as imProcessToneGamut using IM_GAMUT_INVERT.

image:Negative()  [in Lua 5] 

#define imImageAutoLevel	(		_image,
			_percent
	)			imProcessExpandHistogram(_image, _image, _percent)

Same as imProcessExpandHistogram.

image:AutoLevel(percent)  [in Lua 5]