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Diffstat (limited to 'macros/lineToBorderPoints.sci')
| -rw-r--r-- | macros/lineToBorderPoints.sci | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/macros/lineToBorderPoints.sci b/macros/lineToBorderPoints.sci new file mode 100644 index 0000000..eab84ef --- /dev/null +++ b/macros/lineToBorderPoints.sci @@ -0,0 +1,29 @@ +function [points] = lineToBorderPoints(lines,isize) + +// Points of intersection of line(s) with the image border +// +// Calling Sequence +// points = lineToBorderPoints(lines,isize) +// +// Parameters +// lines : It is a MX3 matrix. If a line is represented by A*x + B*y + C = 0, then each row is of the form [A B C] and M is the number of lines. +// isize : It is the size of the image. It is of the form as that returned by the function size. +// points : It is a MX4 matrix. It returns the points of intersection of the line with the image border. Each row is of the form [x1,y1,x2,y2] where (x1,y1) and (x2,y2) are the two points of intersection. If a given line does not intersect the image border, the function returns [-1 -1 -1 -1]. +// +// Description +// The function calculates the points of intersection of one or more lines with the image border. +// +// Examples +// // Load an image +// I = imread('rice.png'); +// // Define a line : 2*x + y = 300 +// line = [2 1 -300]; +// // Calculate the points of intersection +// points = lineToBorderPoints(line,size(I(1))) +// +// Authors +// Asmita Bhar +// + + points = opencv_lineToBorderPoints(lines,isize) +endfunction |