# i need help to find intersection point of 2 lines in image

#### payam1363

##### Member
we need to a code for image processing in c#
we need help to find intersection point of 2 lines in image
you can see my image as below we need to use from Emgu library in c# for find this points
we have a code but we don't know how to use it
if you can write this code for me that find intersection point of lines in my image thanks
i think the answer is here : find intersection point of two lines drawn using houghlines opencv
but it code need to change to use in c#

C#:
``````public static Vector3 Intersect(Vector3 line1V1, Vector3 line1V2, Vector3 line2V1, Vector3 line2V2)
{
//Line1
float A1 = line1V2.Y - line1V1.Y;
float B1 = line1V1.X - line1V2.X;
float C1 = A1*line1V1.X + B1*line1V1.Y;

//Line2
float A2 = line2V2.Y - line2V1.Y;
float B2 = line2V1.X - line2V2.X;
float C2 = A2 * line2V1.X + B2 * line2V1.Y;

float det = A1*B2 - A2*B1;
if (det == 0)
{
return null;//parallel lines
}
else
{
float x = (B2*C1 - B1*C2)/det;
float y = (A1 * C2 - A2 * C1) / det;
return new Vector3(x,y,0);
}
}``````

Last edited:

Staff member

#### payam1363

##### Member
We are not a code writing service.

i knew that . thanks so so much for your help

Last edited by a moderator:

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