is the first and important step of the proposed method. The Fine-tune Forgery Detection uses the outcome of this step as an input. Though, CFD is capable enough to detect the forged regions; we do not take this as the final results. In this step the block size was chosen is very large. Here we can make a choice about the horizontal and vertical step size to select the blocks from an image. Choosing the step size is very important.If the step size chosen is more; then the processing will be fast but the forgery detection gets affected drastically. On the contrary, if the step size is chosen to be small then the block processing will take more time, but it will also increase the precision of forgery detection. The same is true for the block size as well. Coarse regions of the forgeries are detected based on the computation of the correlation matrix. The steps of the algorithm are as follows.