| OpenCV 3.4.8 Open Source Computer Vision

Classes | Functions
Fast line detector
Extended Image Processing

## Classes
class | cv::ximgproc::FastLineDetector
| Class implementing the FLD (Fast Line Detector) algorithm described in [114] . More...

## Functions
Ptr< FastLineDetector > | cv::ximgproc::createFastLineDetector (int _length_threshold=10, float _distance_threshold=1.414213562f, double _canny_th1=50.0, double _canny_th2=50.0, int _canny_aperture_size=3, bool _do_merge=false)
| Creates a smart pointer to a FastLineDetector object and initializes it. More...

## Detailed Description

## Function Documentation

## § createFastLineDetector()

Ptr<FastLineDetector> cv::ximgproc::createFastLineDetector | ( | int | _length_threshold = `10`,
|  | float | _distance_threshold = `1.414213562f`,
|  | double | _canny_th1 = `50.0`,
|  | double | _canny_th2 = `50.0`,
|  | int | _canny_aperture_size = `3`,
|  | bool | _do_merge = `false`
| ) |  |

Python:
| retval | = | cv.ximgproc.createFastLineDetector( | [, _length_threshold[, _distance_threshold[, _canny_th1[, _canny_th2[, _canny_aperture_size[, _do_merge]]]]]] | )

`#include <opencv2/ximgproc/fast_line_detector.hpp>`

Creates a smart pointer to a FastLineDetector object and initializes it.

Parameters

  _length_threshold | 10 - Segment shorter than this will be discarded
  _distance_threshold | 1.41421356 - A point placed from a hypothesis line segment farther than this will be regarded as an outlier
  _canny_th1 | 50 - First threshold for hysteresis procedure in Canny()
  _canny_th2 | 50 - Second threshold for hysteresis procedure in Canny()
  _canny_aperture_size | 3 - Aperturesize for the sobel operator in Canny()
  _do_merge | false - If true, incremental merging of segments will be perfomred

Examples:
  fld_lines.cpp.