Edge model based fusion of multi-focus images using matting method

A new fusion scheme which generates high quality all-in-focus images is proposed. Most existing fusion schemes use block-based focus measures which do not have high precision. The proposed scheme employs a parametric edge model to develop a new focus measure which expresses the sharpness of a pixel with high precision. Then a focus map is generated to express the sharpness of every pixel in an image according to the content using a matting propagation method. Our proposed method is robust and doesn´t suffer from blocking and ringing artifacts, which performs better than most multi-focus fusion algorithms.