Enum AngleRangeOption

Namespace

OpenCvSharp.XImgProc

Assembly

OpenCvSharp.dll

Specifies the part of Hough space to calculate

public enum AngleRangeOption

Fields

ARO_0_45 = 0

Vertical primarily direction and clockwise angle changes

ARO_315_0 = 3

Vertical primarily direction and counterclockwise angle changes

ARO_315_135 = 6

Full set of directions

ARO_315_45 = 4

Vertical primarily direction

ARO_45_135 = 5

Horizontal primarily direction

ARO_45_90 = 1

Horizontal primarily direction and counterclockwise angle changes

ARO_90_135 = 2

Horizontal primarily direction and clockwise angle changes

ARO_CTR_HOR = 7

90 +/- atan(0.5), interval approximately from 64.5 to 116.5 degrees. It is used for calculating Fast Hough Transform for images skewed by atan(0.5).

ARO_CTR_VER = 8

+/- atan(0.5), interval approximately from 333.5(-26.5) to 26.5 degrees It is used for calculating Fast Hough Transform for images skewed by atan(0.5).

Remarks

The enum specifies the part of Hough space to calculate. Each member specifies primarily direction of lines(horizontal or vertical) and the direction of angle changes. Direction of angle changes is from multiples of 90 to odd multiples of 45. The image considered to be written top-down and left-to-right. Angles are started from vertical line and go clockwise. Separate quarters and halves are written in orientation they should be in full Hough space.