Area of a irregular shape

Question

I have set of points which lies on the image. These set of points form a irregular closed shape. I need to find the area of this shape. Does any body which is the normal algorit

Answer 1

Without modesty, I refer you to my answer to another question Combined area of overlapping circles. Monte Carlo is robust, easy-to-parallelise and will, eventually, give you an answer to the accuracy you require.