1. A computer implemented method for calculating a blur artifact in a motion picture, the motion picture comprising one or more frames defined at a predefined interval of time, each of the one or more frames comprising one or more pixels, the computer implemented method comprising: determining a set of pixels in a set of frames, wherein the set of pixels comprises one or more pixels having a Sum of Modified Laplacian value that exceeds a second predefined threshold, and wherein a set of edge pixels is determined in the set of pixels, the set of pixels being a focus area of the motion picture; calculating an edge spread of the set of edge pixels; determining a set of blurred edge pixels in the set of edge pixels, wherein the set of blurred edge pixels comprises the one or more edge pixels of the set of edge pixels for which the edge spread exceeds a third predefined threshold; and calculating the blur artifact as a ratio of a number of the blurred edge pixels in the set of the blurred edge pixels and a number of the edge pixels in the set of edge pixels, wherein calculating the blur artifact comprises: calculating a perception threshold based on a user input; and comparing the calculated blur artifact with the perception threshold.