Bilinear Interpolation Calculator

Bilinear Interpolation is a method for interpolating functions of two variables (e.g., x and y) using repeated linear interpolation. It is usually applied to functions sampled on a 2D rectilinear grid, though it can be generalized to functions defined on the vertices of (a mesh of) arbitrary convex quadrilaterals and is represented as V_x,y = A*X+B*Y+C*X*Y+D or Bilinear Interpolation = Coefficient a*X Co-ordinate+Coefficient b*Y Co-ordinate+Coefficient c*X Co-ordinate*Y Co-ordinate+Coefficient d. Coefficient a is one of the four coefficients determined from the four equations in four unknowns that can be written using the four nearest neighbors of point (x,y), X Co-ordinate of the location to which we want to assign an intensity value, Coefficient b is one of the four coefficients determined from the four equations in four unknowns that can be written using the four nearest neighbors of point, Y Co-ordinate of the location to which we want to assign an intensity value, Coefficient c is one of the four coefficients determined from the four equations in four unknowns that can be written using the four nearest neighbors of point (x,y) & Coefficient d is one of the four coefficients determined from the four equations in four unknowns that can be written using the four nearest neighbors of point (x,y).