MATLAB中的双边滤波答案

【问题标题】：Bilateral filtering in MATLABMATLAB中的双边滤波
【发布时间】：2022-06-15 18:29:56
【问题描述】：

完成“patch process.m”函数，实现双边过滤。

在“lenna med.png”上使用 7 × 7 内核执行双边过滤，其中 σk = 2，σi = 0.05。给定以下所需的输出

请找到以下补丁过程的功能：

function y = patch_process(patch, gaussian, sigma)

% Obtain the input pixel size
[m, n] = size(patch);
% Obtain the center pixel indices
hm = floor(m/2);
hn = floor(n/2);

% Obtain the central pixel intensity
center_intensity = patch(hm+1, hn+1);
% Define the intensity weights for the bilateral filter
int_weights =

% Calculate the filter weights as the multiplication of the Gaussian kernel

% and the intensity kernel
weights =

% Normalize the filter weights
weights = weights / sum(weights(:));

% Conducting linearing filtering
% (1) Location-wise multiplication
patch_weights = patch .* weights;
% (2) Summation to obtain the output pixel value for the patch
y = sum(patch_weights(:));

这是主要代码：

clear all;

I = imread('lenna_med.png');
I = im2double(I);

% Define the Gaussian kernel
gaussian =

% Conducitng bilateral filtering
BI =

% Conducting gaussian filtering
GI =

subplot(1,3,1);
imshow(I);
subplot(1,3,2);
imshow(GI);
subplot(1,3,3);
imshow(BI);

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标签： matlab image-processing filter