org.bytedeco.opencv.opencv_ximgproc

Class FastLineDetector

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.opencv.opencv_core.Algorithm

org.bytedeco.opencv.opencv_ximgproc.FastLineDetector

All Implemented Interfaces:

AutoCloseable

@Namespace(value="cv::ximgproc")
 @Properties(inherit=opencv_ximgproc.class)
public class FastLineDetector
extends Algorithm

\include samples/fld_lines.cpp

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator, Pointer.ReferenceCounter

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
FastLineDetector(Pointer p) Pointer cast constructor.

Method Summary

Modifier and Type	Method and Description
void	detect(GpuMat image, GpuMat lines)
void	detect(Mat image, Mat lines) \brief Finds lines in the input image.
void	detect(UMat image, UMat lines)
void	drawSegments(GpuMat image, GpuMat lines)
void	drawSegments(GpuMat image, GpuMat lines, boolean draw_arrow, Scalar linecolor, int linethickness)
void	drawSegments(Mat image, Mat lines)
void	drawSegments(Mat image, Mat lines, boolean draw_arrow, Scalar linecolor, int linethickness) \brief Draws the line segments on a given image.
void	drawSegments(UMat image, UMat lines)
void	drawSegments(UMat image, UMat lines, boolean draw_arrow, Scalar linecolor, int linethickness)

Methods inherited from class org.bytedeco.opencv.opencv_core.Algorithm

clear, empty, getDefaultName, getPointer, position, read, save, save, write, write, write

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, availablePhysicalBytes, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, getPointer, getPointer, getPointer, hashCode, isNull, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetAddress, offsetof, offsetof, parseBytes, physicalBytes, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, sizeof, toString, totalBytes, totalCount, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

FastLineDetector

public FastLineDetector(Pointer p)

Pointer cast constructor. Invokes Pointer(Pointer).

Method Detail

detect

public void detect(@ByVal
                   Mat image,
                   @ByVal
                   Mat lines)

\brief Finds lines in the input image. This is the output of the default parameters of the algorithm on the above shown image.


Parameters:

image - A grayscale (CV_8UC1) input image. If only a roi needs to be selected, use: fld_ptr-\>detect(image(roi), lines, ...); lines += Scalar(roi.x, roi.y, roi.x, roi.y);

lines - A vector of Vec4f elements specifying the beginning and ending point of a line. Where Vec4f is (x1, y1, x2, y2), point 1 is the start, point 2 - end. Returned lines are directed so that the brighter side is on their left.

detect

public void detect(@ByVal
                   UMat image,
                   @ByVal
                   UMat lines)

detect

public void detect(@ByVal
                   GpuMat image,
                   @ByVal
                   GpuMat lines)

drawSegments

public void drawSegments(@ByVal
                         Mat image,
                         @ByVal
                         Mat lines,
                         @Cast(value="bool")
                         boolean draw_arrow,
                         @ByVal(nullValue="cv::Scalar(0, 0, 255)")
                         Scalar linecolor,
                         int linethickness)

\brief Draws the line segments on a given image.

Parameters:

image - The image, where the lines will be drawn. Should be bigger or equal to the image, where the lines were found.

lines - A vector of the lines that needed to be drawn.

draw_arrow - If true, arrow heads will be drawn.

linecolor - Line color.

linethickness - Line thickness.

drawSegments

public void drawSegments(@ByVal
                         Mat image,
                         @ByVal
                         Mat lines)

drawSegments

public void drawSegments(@ByVal
                         UMat image,
                         @ByVal
                         UMat lines,
                         @Cast(value="bool")
                         boolean draw_arrow,
                         @ByVal(nullValue="cv::Scalar(0, 0, 255)")
                         Scalar linecolor,
                         int linethickness)

drawSegments

public void drawSegments(@ByVal
                         UMat image,
                         @ByVal
                         UMat lines)

drawSegments

public void drawSegments(@ByVal
                         GpuMat image,
                         @ByVal
                         GpuMat lines,
                         @Cast(value="bool")
                         boolean draw_arrow,
                         @ByVal(nullValue="cv::Scalar(0, 0, 255)")
                         Scalar linecolor,
                         int linethickness)

drawSegments

public void drawSegments(@ByVal
                         GpuMat image,
                         @ByVal
                         GpuMat lines)