public class LineSegmentDetector extends Algorithm
Modifier | Constructor and Description |
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protected |
LineSegmentDetector(long addr) |
Modifier and Type | Method and Description |
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static LineSegmentDetector |
__fromPtr__(long addr) |
int |
compareSegments(Size size,
Mat lines1,
Mat lines2)
Draws two groups of lines in blue and red, counting the non overlapping (mismatching) pixels.
|
int |
compareSegments(Size size,
Mat lines1,
Mat lines2,
Mat _image)
Draws two groups of lines in blue and red, counting the non overlapping (mismatching) pixels.
|
void |
detect(Mat _image,
Mat _lines)
Finds lines in the input image.
|
void |
detect(Mat _image,
Mat _lines,
Mat width)
Finds lines in the input image.
|
void |
detect(Mat _image,
Mat _lines,
Mat width,
Mat prec)
Finds lines in the input image.
|
void |
detect(Mat _image,
Mat _lines,
Mat width,
Mat prec,
Mat nfa)
Finds lines in the input image.
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void |
drawSegments(Mat _image,
Mat lines)
Draws the line segments on a given image.
|
protected void |
finalize() |
clear, empty, getDefaultName, getNativeObjAddr, save
public static LineSegmentDetector __fromPtr__(long addr)
public int compareSegments(Size size, Mat lines1, Mat lines2, Mat _image)
size
- The size of the image, where lines1 and lines2 were found.lines1
- The first group of lines that needs to be drawn. It is visualized in blue color.lines2
- The second group of lines. They visualized in red color._image
- Optional image, where the lines will be drawn. The image should be color(3-channel)
in order for lines1 and lines2 to be drawn in the above mentioned colors.public int compareSegments(Size size, Mat lines1, Mat lines2)
size
- The size of the image, where lines1 and lines2 were found.lines1
- The first group of lines that needs to be drawn. It is visualized in blue color.lines2
- The second group of lines. They visualized in red color.
in order for lines1 and lines2 to be drawn in the above mentioned colors.public void detect(Mat _image, Mat _lines, Mat width, Mat prec, Mat nfa)
_image
- A grayscale (CV_8UC1) input image. If only a roi needs to be selected, use:
lsd_ptr->detect(image(roi), lines, ...); lines += Scalar(roi.x, roi.y, roi.x, roi.y);
_lines
- A vector of Vec4i or Vec4f elements specifying the beginning and ending point of a line. Where
Vec4i/Vec4f is (x1, y1, x2, y2), point 1 is the start, point 2 - end. Returned lines are strictly
oriented depending on the gradient.width
- Vector of widths of the regions, where the lines are found. E.g. Width of line.prec
- Vector of precisions with which the lines are found.nfa
- Vector containing number of false alarms in the line region, with precision of 10%. The
bigger the value, logarithmically better the detection.
public void detect(Mat _image, Mat _lines, Mat width, Mat prec)
_image
- A grayscale (CV_8UC1) input image. If only a roi needs to be selected, use:
lsd_ptr->detect(image(roi), lines, ...); lines += Scalar(roi.x, roi.y, roi.x, roi.y);
_lines
- A vector of Vec4i or Vec4f elements specifying the beginning and ending point of a line. Where
Vec4i/Vec4f is (x1, y1, x2, y2), point 1 is the start, point 2 - end. Returned lines are strictly
oriented depending on the gradient.width
- Vector of widths of the regions, where the lines are found. E.g. Width of line.prec
- Vector of precisions with which the lines are found.
bigger the value, logarithmically better the detection.
public void detect(Mat _image, Mat _lines, Mat width)
_image
- A grayscale (CV_8UC1) input image. If only a roi needs to be selected, use:
lsd_ptr->detect(image(roi), lines, ...); lines += Scalar(roi.x, roi.y, roi.x, roi.y);
_lines
- A vector of Vec4i or Vec4f elements specifying the beginning and ending point of a line. Where
Vec4i/Vec4f is (x1, y1, x2, y2), point 1 is the start, point 2 - end. Returned lines are strictly
oriented depending on the gradient.width
- Vector of widths of the regions, where the lines are found. E.g. Width of line.
bigger the value, logarithmically better the detection.
public void detect(Mat _image, Mat _lines)
_image
- A grayscale (CV_8UC1) input image. If only a roi needs to be selected, use:
lsd_ptr->detect(image(roi), lines, ...); lines += Scalar(roi.x, roi.y, roi.x, roi.y);
_lines
- A vector of Vec4i or Vec4f elements specifying the beginning and ending point of a line. Where
Vec4i/Vec4f is (x1, y1, x2, y2), point 1 is the start, point 2 - end. Returned lines are strictly
oriented depending on the gradient.
bigger the value, logarithmically better the detection.
public void drawSegments(Mat _image, Mat lines)
_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.Generated on Wed Oct 9 2019 23:24:43 UTC / OpenCV 4.1.2