https://www.researchgate.net/publication/235662494_On_separating_overlapped_fingerprints [Paper name-"On separating overlapped fingerprint", author-Fanglin Chen,Jianjiang Feng,Jie Zhou] I am unable to understand the process of local fourier analysis in the initial orientation field estimation. I have tried searching over the internet but in vain.
The sentence I am unable to understand has been marked in the paper. What is this 16 x 16 and then again from where do i get this 64 x 64? I can apply a gaussian filter by taking each pixel as centre. But how can i do that taking a 16 x 16 block as centre? The meaning of that sentence is absolutely unclear to me. I have looked at the original paper from where this has been taken and also this paper (https://www.researchgate.net/publication/261469993_Automatic_segmentation_of_latent_fingerprints) [Paper-Automatic Segmentation of Latent Fingerprint author-Anil K.Jain] but things are very unclear to me. Please, I would request the community to kindly help me. I am stuck at this for the last 2 weeks. Thanks in advance to anyone who will help me