小编sid*_*rth的帖子

每个LL(1)语法也是LR(1)吗？

为什么在彩色图像上不能进行傅立叶变换(dft)？为什么只能在灰度图像上进行傅里叶变换？

我正在研究逆过滤,我试图编码它,我从网上找到了一些参考.每个人都考虑过光学传递功能,这在我所指的Gonzalez Book中无处可见.

% Inverse_Filter_Demo-


clc
clear all
close all


original_image=imread('cameraman.jpg'); %loading the original (un-blurred) image
original_image=double(original_image);

%The  blur function (PSF- Point Spread Function) that will be added  to the original image
PSF=fspecial('motion',20,45);

%Adding blur to the original image
degraded_image = imfilter(original_image,PSF,'circular','conv');

OTF= psf2otf(PSF,[size(degraded_image,1) size(degraded_image,2)]);%Getting OTF from PSF
Inverse_Filter=conj(OTF)./((abs(OTF)).^2); %The inverse filter

%Preforming Fourier Transform to the degraded image
FT_degraded_image=fftn(degraded_image);

%Preforming the restoration itself
restored_image=abs(ifftn(FT_degraded_image.*Inverse_Filter));

%Presenting the restoration results:

figure;
set(gca,'Fontsize',14);
colormap(gray);
imagesc(original_image,[0 255]);
truesize;    
title('Original image');


figure;
set(gca,'Fontsize',14);
colormap(gray);
imagesc(degraded_image,[0 …

为什么Rabin Cryptosystem比RSA更安全？

在"C"中的套接字编程中,如何找到连接到服务器的客户端的IP地址？服务器如何获取客户端的IP地址？