How to draw a line on an image in matlab?

Question

I have two points lets say:

• P(x,y) [point lies at the top of image]
• P\'(x\',y\') [point lies at bottom of image]

Now i want to draw a l

Answer 1

If you have the Computer Vision toolbox. You can simply use shapeInserter.

Check out http://www.mathworks.com/help/vision/ref/vision.shapeinserter-class.html

To specify lines, you have to use the line below. Otherwise, you may get a rectangle

Example:

%draw a line from point (100,100) to (200,200) on an image saved as nextFrame

line = int32([100 100  200 200]);
shapeInserter = vision.ShapeInserter('Shape', 'Lines');
nextFrame = step(shapeInserter, nextFrame, line);

Take a look at the properties to see what you can edit.