#include "MagickCore/studio.h"
#include "MagickCore/animate.h"
#include "MagickCore/artifact.h"
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/cache.h"
#include "MagickCore/cache-private.h"
#include "MagickCore/cache-view.h"
#include "MagickCore/channel.h"
#include "MagickCore/client.h"
#include "MagickCore/color.h"
#include "MagickCore/color-private.h"
#include "MagickCore/colorspace.h"
#include "MagickCore/colorspace-private.h"
#include "MagickCore/composite.h"
#include "MagickCore/composite-private.h"
#include "MagickCore/compress.h"
#include "MagickCore/constitute.h"
#include "MagickCore/display.h"
#include "MagickCore/draw.h"
#include "MagickCore/enhance.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/feature.h"
#include "MagickCore/gem.h"
#include "MagickCore/geometry.h"
#include "MagickCore/list.h"
#include "MagickCore/image-private.h"
#include "MagickCore/magic.h"
#include "MagickCore/magick.h"
#include "MagickCore/matrix.h"
#include "MagickCore/memory_.h"
#include "MagickCore/module.h"
#include "MagickCore/monitor.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/morphology-private.h"
#include "MagickCore/option.h"
#include "MagickCore/paint.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/profile.h"
#include "MagickCore/property.h"
#include "MagickCore/quantize.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/random_.h"
#include "MagickCore/resource_.h"
#include "MagickCore/segment.h"
#include "MagickCore/semaphore.h"
#include "MagickCore/signature-private.h"
#include "MagickCore/string_.h"
#include "MagickCore/thread-private.h"
#include "MagickCore/timer.h"
#include "MagickCore/utility.h"
#include "MagickCore/version.h"

Include dependency graph for feature.c:

Data Structures
struct	_CannyInfo

Macros
#define	CannyEdgeImageTag "CannyEdge/Image"

#define	Log10Epsilon (1.0e-11)

#define	BoundingBox "viewbox"

#define	HoughLineImageTag "HoughLine/Image"

#define	MaxMeanShiftIterations 100

#define	MeanShiftImageTag "MeanShift/Image"

Typedefs
typedef struct _CannyInfo	CannyInfo

Functions
static MagickBooleanType	IsAuthenticPixel (const Image *image, const ssize_t x, const ssize_t y)

static MagickBooleanType	TraceEdges (Image edge_image, CacheView edge_view, MatrixInfo canny_cache, const ssize_t x, const ssize_t y, const double lower_threshold, ExceptionInfo exception)

MagickExport Image *	CannyEdgeImage (const Image image, const double radius, const double sigma, const double lower_percent, const double upper_percent, ExceptionInfo exception)

static double	MagickLog10 (const double x)

MagickExport ChannelFeatures *	GetImageFeatures (const Image image, const size_t distance, ExceptionInfo exception)

static double	MagickRound (double x)

static Image *	RenderHoughLines (const ImageInfo image_info, const size_t columns, const size_t rows, ExceptionInfo exception)

MagickExport Image *	HoughLineImage (const Image image, const size_t width, const size_t height, const size_t threshold, ExceptionInfo exception)

MagickExport Image *	MeanShiftImage (const Image image, const size_t width, const size_t height, const double color_distance, ExceptionInfo exception)

Macro Definition Documentation

◆ BoundingBox

#define BoundingBox "viewbox"

◆ CannyEdgeImageTag

#define CannyEdgeImageTag "CannyEdge/Image"

◆ HoughLineImageTag

#define HoughLineImageTag "HoughLine/Image"

◆ Log10Epsilon

#define Log10Epsilon (1.0e-11)

◆ MaxMeanShiftIterations

#define MaxMeanShiftIterations 100

◆ MeanShiftImageTag

#define MeanShiftImageTag "MeanShift/Image"

Typedef Documentation

◆ CannyInfo

typedef struct _CannyInfo CannyInfo

Function Documentation

◆ CannyEdgeImage()

MagickExport Image * CannyEdgeImage	(	const Image *	image,
		const double	radius,
		const double	sigma,
		const double	lower_percent,
		const double	upper_percent,
		ExceptionInfo *	exception
	)

Definition at line 237 of file feature.c.

References AcquireAuthenticCacheView(), AcquireKernelInfo(), AcquireMatrixInfo(), AcquireVirtualCacheView(), CannyEdgeImageTag, _Image::columns, ConvolveMorphology, DestroyCacheView(), DestroyImage(), DestroyKernelInfo(), DestroyMatrixInfo(), _Image::filename, FormatLocaleString(), GetCacheViewAuthenticPixels(), GetCacheViewVirtualPixels(), GetMagickModule, GetMatrixElement(), GetPixelChannels(), GetPixelIntensity(), GRAYColorspace, _CannyInfo::intensity, IsEventLogging(), LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickEpsilon, MagickFalse, MagickPathExtent, MagickTrue, _CannyInfo::magnitude, MorphologyImage(), OffAlphaChannel, _CannyInfo::orientation, _Image::progress_monitor, ResourceLimitError, _Image::rows, SetImageAlphaChannel(), SetImageProgress(), SetMatrixElement(), _ExceptionInfo::signature, _Image::signature, SyncCacheViewAuthenticPixels(), ThrowImageException, TraceEdges(), TraceEvent, and TransformImageColorspace().

◆ GetImageFeatures()

MagickExport ChannelFeatures * GetImageFeatures	(	const Image *	image,
		const size_t	distance,
		ExceptionInfo *	exception
	)

Definition at line 623 of file feature.c.

References AcquireQuantumMemory(), AcquireVirtualCacheView(), _PixelPacket::alpha, _Image::alpha_trait, AlphaPixelChannel, _ChannelFeatures::angular_second_moment, _PixelPacket::black, BlackPixelChannel, _PixelPacket::blue, BluePixelChannel, CMYKColorspace, _Image::colorspace, _Image::columns, _ChannelFeatures::contrast, _ChannelFeatures::correlation, DestroyCacheView(), _ChannelFeatures::difference_entropy, _ChannelFeatures::difference_variance, _ChannelFeatures::entropy, _Image::filename, GetCacheViewVirtualPixels(), GetMagickModule, GetPixelAlpha(), GetPixelBlack(), GetPixelBlue(), GetPixelChannels(), GetPixelGreen(), GetPixelRed(), _PixelPacket::green, GreenPixelChannel, _ChannelFeatures::inverse_difference_moment, IsEventLogging(), LogMagickEvent(), magick_restrict, MagickAbsoluteValue, MagickCoreSignature, MagickEpsilon, MagickFalse, MagickLog10(), MagickTrue, _ChannelFeatures::maximum_correlation_coefficient, MaxMap, MaxPixelChannels, _ChannelFeatures::measure_of_correlation_1, _ChannelFeatures::measure_of_correlation_2, PerceptibleReciprocal(), _PixelPacket::red, RedPixelChannel, RelinquishMagickMemory(), ResourceLimitError, ResourceLimitFatalError, _Image::rows, _Image::signature, _ChannelFeatures::sum_average, _ChannelFeatures::sum_entropy, _ChannelFeatures::sum_variance, ThrowFatalException, ThrowMagickException(), TraceEvent, UndefinedPixelTrait, and _ChannelFeatures::variance_sum_of_squares.

Referenced by IdentifyImage().

◆ HoughLineImage()

MagickExport Image * HoughLineImage	(	const Image *	image,
		const size_t	width,
		const size_t	height,
		const size_t	threshold,
		ExceptionInfo *	exception
	)

Definition at line 1838 of file feature.c.

References AcquireImageInfo(), AcquireMatrixInfo(), AcquireUniqueFileResource(), AcquireVirtualCacheView(), AppendImageToList(), _Image::background_color, _ImageInfo::background_color, CannyEdgeImageTag, _Image::columns, DegreesToRadians(), DestroyCacheView(), DestroyImageInfo(), DestroyMatrixInfo(), _Image::filename, _ImageInfo::filename, FormatLocaleString(), GetCacheViewVirtualPixels(), GetFirstImageInList(), GetImageArtifact(), GetMagickModule, GetMatrixElement(), GetPixelChannels(), GetPixelIntensity(), IsEventLogging(), IsStringTrue(), LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickPathExtent, MagickRound(), MagickTrue, MatrixToImage(), NullMatrix(), _Image::progress_monitor, QuantumRange, RelinquishUniqueFileResource(), RenderHoughLines(), ResourceLimitError, _Image::rows, SetImageOption(), SetImageProgress(), SetMatrixElement(), _ExceptionInfo::signature, _Image::signature, ThrowImageException, TraceEvent, _PointInfo::x, _SegmentInfo::x1, _SegmentInfo::x2, _PointInfo::y, _SegmentInfo::y1, and _SegmentInfo::y2.

◆ IsAuthenticPixel()

static MagickBooleanType IsAuthenticPixel	(	const Image *	image,
		const ssize_t	x,
		const ssize_t	y
	)

inlinestatic

Definition at line 147 of file feature.c.

References _Image::columns, MagickFalse, MagickTrue, and _Image::rows.

Referenced by TraceEdges().

◆ MagickLog10()

static double MagickLog10 ( const double x )

inlinestatic

Definition at line 614 of file feature.c.

References Log10Epsilon.

Referenced by GetImageFeatures().

◆ MagickRound()

static double MagickRound ( double x )

inlinestatic

Definition at line 1765 of file feature.c.

Referenced by HoughLineImage(), and MeanShiftImage().

◆ MeanShiftImage()

MagickExport Image * MeanShiftImage	(	const Image *	image,
		const size_t	width,
		const size_t	height,
		const double	color_distance,
		ExceptionInfo *	exception
	)

Definition at line 2165 of file feature.c.

References AcquireAuthenticCacheView(), AcquireVirtualCacheView(), _PixelInfo::alpha, _PixelInfo::blue, ClampToQuantum(), CloneImage(), _Image::columns, DestroyCacheView(), DestroyImage(), DirectClass, _Image::filename, GetCacheViewAuthenticPixels(), GetCacheViewVirtualPixels(), GetMagickModule, GetOneCacheViewVirtualPixelInfo(), GetPixelChannels(), GetPixelInfo(), GetPixelInfoPixel(), _PixelInfo::green, IsEventLogging(), LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickRound(), MagickTrue, MaxMeanShiftIterations, MeanShiftImageTag, PerceptibleReciprocal(), _Image::progress_monitor, QuantumScale, _PixelInfo::red, _Image::rows, SetImageProgress(), SetImageStorageClass(), SetPixelAlpha(), SetPixelBlue(), SetPixelGreen(), SetPixelRed(), _ExceptionInfo::signature, _Image::signature, SyncCacheViewAuthenticPixels(), TraceEvent, _PointInfo::x, and _PointInfo::y.

◆ RenderHoughLines()

static Image * RenderHoughLines	(	const ImageInfo *	image_info,
		const size_t	columns,
		const size_t	rows,
		ExceptionInfo *	exception
	)

static

Definition at line 1775 of file feature.c.

References AcquireImage(), AcquireQuantumMemory(), _DrawInfo::affine, CloneDrawInfo(), CloseBlob(), _Image::columns, DefaultResolution, DestroyDrawInfo(), DestroyImageList(), DrawImage(), _Image::filename, FileToString(), GetBlobSize(), GetBlobStreamData(), GetFirstImageInList(), MagickFalse, OpenBlob(), _DrawInfo::primitive, ReadBinaryBlobMode, _Image::resolution, _Image::rows, SetImageBackgroundColor(), SetImageExtent(), _AffineMatrix::sx, _AffineMatrix::sy, _PointInfo::x, and _PointInfo::y.

Referenced by HoughLineImage().

◆ TraceEdges()

static MagickBooleanType TraceEdges	(	Image *	edge_image,
		CacheView *	edge_view,
		MatrixInfo *	canny_cache,
		const ssize_t	x,
		const ssize_t	y,
		const double	lower_threshold,
		ExceptionInfo *	exception
	)

static

Definition at line 157 of file feature.c.

References GetCacheViewAuthenticPixels(), GetMatrixElement(), GetPixelIntensity(), _CannyInfo::intensity, IsAuthenticPixel(), MagickFalse, MagickTrue, QuantumRange, SetMatrixElement(), SyncCacheViewAuthenticPixels(), _CannyInfo::x, and _CannyInfo::y.

Referenced by CannyEdgeImage().

Data Structures

Macros

Typedefs

Functions

Macro Definition Documentation

◆ BoundingBox

◆ CannyEdgeImageTag

◆ HoughLineImageTag

◆ Log10Epsilon

◆ MaxMeanShiftIterations

◆ MeanShiftImageTag

Typedef Documentation

◆ CannyInfo

Function Documentation

◆ CannyEdgeImage()

◆ GetImageFeatures()

◆ HoughLineImage()

◆ IsAuthenticPixel()

◆ MagickLog10()

◆ MagickRound()

◆ MeanShiftImage()

◆ RenderHoughLines()

◆ TraceEdges()