In normal cut and paste algorithms,naive methods like feathering are used which do not completely hide the boundaries betweenthe merged images.Also the saliency of the composite image also gets affected.The algorithms used try minimize the integral of the difference between thegradient of the source Image and a guidance vector field with boundary conditions.The solution to the obtained equation is a poisson equation.# How to useReplace source and destination images in each of the file you are using with the required src and dest images.