Image Processing

Image Processing algorithms. More...

Enumerations
enum	threshold_direction { regular, inverse }
enum	threshold_optimal_value { otsu }
	Method of optimal threshold value calculation. More...
enum	threshold_truncate_mode { threshold, zero }
	TODO. More...
enum	threshold_adaptive_method { mean, gaussian }

Functions
template<typename SrcView , typename DstView >
void	threshold_binary (SrcView const &src_view, DstView const &dst_view, typename channel_type< DstView >::type threshold_value, typename channel_type< DstView >::type max_value, threshold_direction direction=threshold_direction::regular)
	Applies fixed threshold to each pixel of image view. Performs image binarization by thresholding channel value of each pixel of given image view. More...
template<typename SrcView , typename DstView >
void	threshold_binary (SrcView const &src_view, DstView const &dst_view, typename channel_type< DstView >::type threshold_value, threshold_direction direction=threshold_direction::regular)
	Applies fixed threshold to each pixel of image view. Performs image binarization by thresholding channel value of each pixel of given image view. This variant of threshold_binary automatically deduces maximum value for each channel of pixel based on channel type. If direction is regular, values greater than threshold_value will be set to maximum numeric limit of channel else 0. If direction is inverse, values greater than threshold_value will be set to 0 else maximum numeric limit of channel.
template<typename SrcView , typename DstView >
void	threshold_truncate (SrcView const &src_view, DstView const &dst_view, typename channel_type< DstView >::type threshold_value, threshold_truncate_mode mode=threshold_truncate_mode::threshold, threshold_direction direction=threshold_direction::regular)
	Applies truncating threshold to each pixel of image view. Takes an image view and performs truncating threshold operation on each chennel. If mode is threshold and direction is regular: values greater than threshold_value will be set to threshold_value else no change If mode is threshold and direction is inverse: values less than or equal to threshold_value will be set to threshold_value else no change If mode is zero and direction is regular: values less than or equal to threshold_value will be set to 0 else no change If mode is zero and direction is inverse: values more than threshold_value will be set to 0 else no change.
template<typename SrcView , typename DstView >
void	threshold_optimal (SrcView const &src_view, DstView const &dst_view, threshold_optimal_value mode=threshold_optimal_value::otsu, threshold_direction direction=threshold_direction::regular)
template<typename SrcView , typename DstView >
void	threshold_adaptive (SrcView const &src_view, DstView const &dst_view, typename channel_type< DstView >::type max_value, std::size_t kernel_size, threshold_adaptive_method method=threshold_adaptive_method::mean, threshold_direction direction=threshold_direction::regular, typename channel_type< DstView >::type constant=0)
template<typename SrcView , typename DstView >
void	threshold_adaptive (SrcView const &src_view, DstView const &dst_view, std::size_t kernel_size, threshold_adaptive_method method=threshold_adaptive_method::mean, threshold_direction direction=threshold_direction::regular, int constant=0)

Detailed Description

Image Processing algorithms.

Direction of image segmentation. The direction specifies which pixels are considered as corresponding to object and which pixels correspond to background.

Collection of image processing algorithms currently implemented by GIL.

Enumeration Type Documentation

threshold_direction

enum threshold_direction

strong

Enumerator
regular	Consider values greater than threshold value.
inverse	Consider values less than or equal to threshold value.

threshold_optimal_value

enum threshold_optimal_value

strong

Method of optimal threshold value calculation.

Enumerator
otsu	Todo: TODO

threshold_truncate_mode

enum threshold_truncate_mode

strong

TODO.

Enumerator
threshold	Todo: TODO
zero	Todo: TODO

Function Documentation

threshold_binary()

void boost::gil::threshold_binary	(	SrcView const &	src_view,
		DstView const &	dst_view,
		typename channel_type< DstView >::type	threshold_value,
		typename channel_type< DstView >::type	max_value,
		threshold_direction	direction = threshold_direction::regular
	)

Applies fixed threshold to each pixel of image view. Performs image binarization by thresholding channel value of each pixel of given image view.

Parameters

src_view	- TODO
dst_view	- TODO
threshold_value	- TODO
max_value	- TODO
threshold_direction	- if regular, values greater than threshold_value are set to max_value else set to 0; if inverse, values greater than threshold_value are set to 0 else set to max_value.