2D Shape recognition algorithm - looking for guidance [closed]

Answer 1

The other way is you can use math with this problem using the average of each point that are smallest distance from the one your'e comparing it from, first you must resize shape with the ones in your library of shapes and then:

      function shortestDistanceSum( subject, test_subject ) {

         var sum = 0;

         operate( subject, function( shape ){

            var smallest_distance = 9999;

            operate( test_subject, function( test_shape ){
                var distance = dist( shape.x, shape.y, test_shape.x, test_shape.y );

                smallest_distance = Math.min( smallest_distance, distance );
            });

            sum += smallest_distance;

        });

            var average = sum/subject.length;

            return average;
       }

       function operate( array, callback ) {
          $.each(array, function(){
              callback( this );
          });
       }

       function dist( x, y, x1, y1 ) {
            return Math.sqrt( Math.pow( x1 - x, 2) + Math.pow( y1 - y, 2) );
        }

        var square_shape = Array; // collection of vertices in a square shape
        var triangle_shape = Array; // collection of vertices in a triangle
        var unknown_shape = Array; // collection of vertices in the shape your'e comparing from

        square_sum = shortestDistanceSum( square_shape, unknown_shape );
        triangle_sum = shortestDistanceSum( triangle_shape, unknown_shape );

Where the lowest sum is the closest shape.