clc clear all %% img_in = imread('0066.jpg'); m = size(img_in,1); n = size(img_in,2); img_lab = rgb2lab(img_in); img_L_mean = mean(mean(img_lab(:,:,1))); img_a_mean = mean(mean(img_lab(:,:,2))); img_b_mean = mean(mean(img_lab(:,:,3))); %% %高斯滤波 img_R = img_in(:,:,1); img_G = img_in(:,:,2); img_B = img_in(:,:,3); w = fspecial('gaussian',[7 7]); img_R_blur = imfilter(img_R,w); img_G_blur = imfilter(img_G,w); img_B_blur = imfilter(img_B,w); img_blur = cat(3,img_R_blur,img_G_blur,img_B_blur); figure('name','滤波') imshow(img_blur) img_lab_blur = rgb2lab(img_blur); %% %计算显著图 Sd = zeros(m,n); for i = 1:m for j = 1:n Sd(i,j) = sqrt((img_L_mean - img_lab_blur(i,j,1))^2 + (img_a_mean - img_lab_blur(i,j,2))^2 + (img_b_mean - img_lab_blur(i,j,3))^2); end end %归一化 Sd_normalized = figure_normalize(Sd); imwrite(Sd_normalized,'FT_saliency.jpg') figure imshow(Sd_normalized) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% end运行代码时报错错误: 非法使用保留关键字 "end"。改进代码

arima_test.zip_ARIMA代码_arima.test_arima预测_stationary test_平稳性检验

arima代码具体实现包括平稳性检验差分以及预测数据不在压缩包中使用者可根据自身情况使用

QAM16_mod_and_demod.rar_MOD_QAM16_qam16 调制解调

LDPC-PEG算法构造H矩阵.rar_All Clear_Density Evolution_LDPC_PEG法构造H矩阵_密

LDPC-PEG算法构造H矩阵源码程序，matlab源码程序 clear all; clc; %输入编码参数,m:校验节点数目，n:变量节点数目(注意码率R不一定为1/2) %构造任意码率的LDPC校验矩阵 m=input('The number of check nodes:'); n=...

clc clear all %% img_in = imread('ILSVRC2017_test_00000237.jpg'); m = size(img_in,1); n = size(img_in,2); img_lab = rgb2lab(img_in); img_L_mean = mean(mean(img_lab(:,:,1))); img_a_mean = mean(mean(img_lab(:,:,2))); img_b_mean = mean(mean(img_lab(:,:,3))); %% %高斯滤波 img_R = img_in(:,:,1); img_G = img_in(:,:,2); img_B = img_in(:,:,3); w = fspecial('gaussian',[7 7]); img_R_blur = imfilter(img_R,w); img_G_blur = imfilter(img_G,w); img_B_blur = imfilter(img_B,w); img_blur = cat(3,img_R_blur,img_G_blur,img_B_blur); figure('name','滤波') imshow(img_blur) img_lab_blur = rgb2lab(img_blur); %% %计算显著图 Sd = zeros(m,n); for i = 1:m for j = 1:n Sd(i,j) = sqrt((img_L_mean - img_lab_blur(i,j,1))^2 + (img_a_mean - img_lab_blur(i,j,2))^2 + (img_b_mean - img_lab_blur(i,j,3))^2); end end %归一化 Sd_normalized = figure_normalize(Sd); imwrite(Sd_normalized,'FT_saliency.jpg') figure imshow(Sd_normalized) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% function Out_image = figure_normalize(In_image) % 归一化至0-1 o_max_image = max(max(In_image)); o_min_image = min(min(In_image)); Out_image = double(In_image - o_min_image)/double(o_max_image - o_min_image); end改进该代码使其能在matlab上运行

m = size(img_in,1); n = size(img_in,2); img_lab = rgb2lab(img_in); img_L_mean = mean(mean(img_lab(:,:,1))); img_a_mean = mean(mean(img_lab(:,:,2))); img_b_mean = mean(mean(img_lab(:,:,3))); %高斯...

clc; clear all; img_in = imread('ILSVRC2017_test_00000237.jpg'); m = size(img_in,1); n = size(img_in,2); img_lab = rgb2lab(img_in); img_L_mean = mean(mean(img_lab(:,:,1))); img_a_mean = mean(mean(img_lab(:,:,2))); img_b_mean = mean(mean(img_lab(:,:,3))); %高斯滤波 img_R = img_in(:,:,1); img_G = img_in(:,:,2); img_B = img_in(:,:,3); w = fspecial('gaussian',[7 7]); img_R_blur = imfilter(img_R,w); img_G_blur = imfilter(img_G,w); img_B_blur = imfilter(img_B,w); img_blur = cat(3,img_R_blur,img_G_blur,img_B_blur); figure('Name','滤波'); imshow(img_blur); img_lab_blur = rgb2lab(img_blur); %计算显著图 Sd = zeros(m,n); for i = 1:m for j = 1:n Sd(i,j) = sqrt((img_L_mean - img_lab_blur(i,j,1))^2 + (img_a_mean - img_lab_blur(i,j,2))^2 + (img_b_mean - img_lab_blur(i,j,3))^2); end end %归一化 Sd_normalized = figure_normalize(Sd); imwrite(Sd_normalized,'FT_saliency.jpg'); figure; imshow(Sd_normalized); %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% function Out_image = figure_normalize(In_image) o_max_image = max(max(In_image)); o_min_image = min(min(In_image)); Out_image = double(In_image - o_min_image)/double(o_max_image - o_min_image); end运行该代码报错未定义函数或变量 'figure_normalize'。

function Out_image = figure_normalize(In_image) o_max_image = max(max(In_image)); o_min_image = min(min(In_image)); Out_image = double(In_image - o_min_image)/double(o_max_image - o_min_image); end ...

这段代码优化巡行时间：clc;clear; tic %遍历循环读取所有tiff文件 file_path = 'D:\JIANGXiaoYu\5_20230709_24dpf\';% 图像文件夹路径 img_path_list = dir(strcat(file_path,'.tiff'));%获取该文件夹中所有TIFF格式的图像 img_num = length(img_path_list);%获取图像总数量 Output_path='D:\JIANGXiaoYu\5_20230709_24dpf_tif\';%文件夹的路径 for jj = 1:img_num image_name = img_path_list(jj).name; % 图像名 image=imread(strcat(file_path,img_path_list(jj).name)); Info=imfinfo(image_name); Slice=size(Info,1); %%获取图片z向帧数 Width=Info.Width; Height=Info.Height; Image=zeros(Height,Width,Slice); for i=1:Slice Image(:,:,i)=imread(strcat(file_path,img_path_list(jj).name),i); %%一层一层的读入图像 J=uint8(Image(:,:,i)); %%一层一层写出图像 imwrite(J,[Output_path,num2str(209(jj-1)+i,'%04d'),'.tif']);%2G209/4G419 end fprintf(' %d %s\n',jj,strcat(file_path,image_name));% 显示正在处理的图像名 end toc disp(['运行时间: ',num2str(toc)]); %遍历循环读取所有tiff文件

slice = size(Info, 1); width = Info.Width; height = Info.Height; temp_images = zeros(height, width, slice); for i = 1:slice temp_images(:, :, i) = imread(fullfile(file_path, image_name), i); ...

clear clc pathname = uigetdir; name_list=dir(pathname); for i=3:22 name_list(i).引用了不存在的字段 'num'。出错 LoadData (line 33)num=zeros(20,1); name_list(i).num(i-2)=1; end %pathname = uigetdir; img_name1=importdata('E:\\train.txt'); img_train_num=size(img_name1,1); num=0; for i=1:img_train_num img_name_char=cell2mat(img_name1(i)); label_1(i).name=extractBefore(cell2mat(img_name1(i)),'_'); imgPath = [pathname,'\',label_1(i).name,'\',cell2mat(img_name1(i))]; temp = imread(imgPath); train_x(:,:,i)=temp; % temp = double(temp(:)); % num=num+1; % imagedata1(:,num)=temp; end for i=1:img_train_num for j=1:20 if strcmp(name_list(j+2).name,label_1(i).name) label_1(i).num=name_list(j+2).num; end end train_y(:,i)=uint8(label_1(i).num); end %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %pathname = uigetdir; img_name1=importdata('E\\test.txt'); img_test_num=size(img_name1,1); num=0; for i=1:img_test_num img_name_char=cell2mat(img_name1(i)); label_2(i).name=extractBefore(cell2mat(img_name1(i)),'_'); imgPath = [pathname,'\',label_2(i).name,'\',cell2mat(img_name1(i))]; temp = imread(imgPath); test_x(:,:,i)=temp; % temp = double(temp(:)); % num=num+1; % imagedata2(:,num)=temp; end for i=1:img_test_num for j=1:20 if strcmp(name_list(j+2).name,label_2(i).name) label_2(i).num=name_list(j+2).num; end end test_y(:,i)=uint8(label_2(i).num); end save('E\\imgdata_uint8.mat', 'train_x','train_y','test_x','test_y');

2. img_name1=importdata('E:\\train.txt'); 和 img_name1=importdata('E\\test.txt'); 这两行代码中的路径分隔符不一致，应该都使用反斜杠\。 3. save('E\\imgdata_uint8.mat', 'train_x','train_y','test_...

clear all close all clc %addpath('./two') %addpath('./groundtruth') %rmpath('./two') %rmpath('./groundtruth') I_Out = imread('3.bmp'); I_Mask = imread('img3.jpg'); I_Mask = I_Mask(:,:,1) I_Mask = I_Mask>0; cross_region = I_Out & I_Mask; numerator = sum(sum(cross_region)); denominator = sum(sum(I_Out)) + sum(sum(I_Mask)); DC_rate = 2*numerator/denominator

DC是用来衡量分割结果与真实标注之间重合度的指标，其取值范围在[0,1]之间，值越大代表分割结果与真实标注越相似。代码中，首先读取了原图和二值化标注图，然后将标注图的像素值二值化为0和1，接着利用位运算AND操作...

clear clc pathname = uigetdir; name_list=dir(pathname); for i=3:22 name_list(i).num=zeros(20,1); name_list(i).num(i-2)=1; end %pathname = uigetdir; img_name1=importdata('train_30_32.txt'); img_train_num=size(img_name1,1); num=0; for i=1:img_train_num img_name_char=cell2mat(img_name1(i)); label_1(i).name=extractBefore(cell2mat(img_name1(i)),'_'); imgPath = [pathname,'\',label_1(i).name,'\',cell2mat(img_name1(i))]; temp = imread(imgPath); train_x(:,:,i)=temp; % temp = double(temp(:)); % num=num+1; % imagedata1(:,num)=temp; end for i=1:img_train_num for j=1:20 if strcmp(name_list(j+2).name,label_1(i).name) label_1(i).num=name_list(j+2).num; end end train_y(:,i)=uint8(label_1(i).num); end %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %pathname = uigetdir; img_name1=importdata('test_30_32.txt'); img_test_num=size(img_name1,1); num=0; for i=1:img_test_num img_name_char=cell2mat(img_name1(i)); label_2(i).name=extractBefore(cell2mat(img_name1(i)),'_'); imgPath = [pathname,'\',label_2(i).name,'\',cell2mat(img_name1(i))]; temp = imread(imgPath); test_x(:,:,i)=temp; % temp = double(temp(:)); % num=num+1; % imagedata2(:,num)=temp; end for i=1:img_test_num for j=1:20 if strcmp(name_list(j+2).name,label_2(i).name) label_2(i).num=name_list(j+2).num; end end test_y(:,i)=uint8(label_2(i).num); end save('E:\\imgdata_uint8.mat', 'train_x','train_y','test_x','test_y');逐行解释

接着，使用循环遍历前 20 个文件夹（name_list 中的前两个元素为 . 和 ..），并为每个文件夹创建一个标签向量 num，其中第 i-2 个元素为 1，其余为 0，表示该文件夹对应的标签。接下来，读取训练集图像...

分析程序作用close all; %关闭当前所有图形窗口 clear all; %清空工作空间变量 clc; %清屏 function nearest_neighbor = nearest_neighbor(lena.png,2); % 初始化，读入图像，图像数据为mncolor img = imread(lena.png); % 变化后图像 [row,col,color] = size(img); % 获得图像的行列数及色板数 row = round(rowR); % 新图像行 col = round(colR); % 新图像列 % 新图像初始化 % 使用class获得原图像的数据类型，使得新图像数据类型与原图像保持一致 img_new = zeros(row,col,color,class(img)); % 对新图像的行、列、色板赋值 for i = 1:row for j = 1:col for n = 1:color x = round(i/R); y = round(j/R); % 为了避免x和y等于0而报错，采取+1处理即可 if x == 0 x = x+1; end if y == 0 y = y+1; end img_new(i,j,n) = img(x,y,n); end end end

第二行代码 "clear all;" 清空 MATLAB 的工作空间，以便删除之前的变量和数据。第三行代码 "clc;" 清空 MATLAB 命令窗口，以便清除之前的输出信息。第四行代码是一个函数调用，将文件 "lena.png" 读入到 MATLAB ...

%% close all; clc; clear all; % img = imread('GZY.jpg'); imshow(img); title('original image'); % 计算傅里叶变换 img_F = fft2(img); [M, N] = size(img); s = sum(abs(img_F(1:M, 1:N))); % 行求和 s = sum(s); % 列求和 ave = s / (M * N); disp(['average value of image is: ',num2str(ave)]); S = log(1 + abs(img_F)); figure; imshow(S); title('二维图像显示幅度谱'); x = 0:1:255; y = 0:1:255; [x, y] = meshgrid(x, y); figure; mesh(S); title('三维图像显示幅度谱'); img_Q = angle(img_F); figure; plot(img_Q); title('二维图像显示相位谱'); x = 0:1:255; y = 0:1:255; [x, y] = meshgrid(x, y); figure; mesh(img_Q); title('三维图像显示相位谱');这是我的代码，帮我修改这个问题average value of image is: 7772.7855 错误使用 matlab.graphics.chart.primitive.Surface 值必须是数值类型的标量、向量或数组。出错 mesh (第 98 行) hh = matlab.graphics.chart.primitive.Surface('ZData',z,'FaceColor',fc,'EdgeColor','flat', ... 出错 untitled (第 29 行) mesh(S);

[M, N] = size(img); s = sum(abs(img_F(1:M, 1:N))); % 行求和 s = sum(s); % 列求和 ave = s / (M * N); disp(['average value of image is: ',num2str(ave)]); S = log(1 + abs(img_F)); figure; imshow(S); ...

clc; clear,close; I = imread('flower.tif'); %使用fspecial函数创建一个运动模糊退化函数。假设我们想要一个方向为45度，长度为11像素的模糊核 motion_kernel = fspecial('motion', 11, 45); %应用运动模糊和高斯噪声 blurred = imfilter(I, motion_kernel, 'conv', 'circular'); blurred = imnoise(blurred, 'gaussian', 0, 0.01); % 添加均值为0，方差为0.01的高斯噪声 estimated_nsr = 0; % 估计信噪比 restored = deconvwnr(blurred, motion_kernel, estimated_nsr); % 维纳滤波 estimated_nsr = 0.001; % 估计信噪比 restored_wnr = deconvwnr(blurred, motion_kernel, estimated_nsr); % 自相关函数滤波 corr_img = xcorr2(blurred); % 计算自相关函数 corr_kernel = xcorr2(motion_kernel); % 计算模糊核的自相关函数 restored_wiener = deconvwnr(blurred, motion_kernel, corr_kernel, corr_img);这个程序改一下错

1. 在使用imfilter函数进行卷积时，可以指定边缘处理方式，如'conv'表示用0填充边缘，'replicate'表示用边缘像素填充，'symmetric'表示用图像对称的方式填充，等等。 2. 在添加高斯噪声时，可以根据需要调整均值和...

解释代码clc;clear all;close all; img = imread('tire.tif'); figure,imshow(img); img3 = imrotate(img,90); figure,imshow(img3); imwrite(img3,'a3.jpg');

这段代码的作用是： ...7. 将 img3 图像保存为名为 'a3.jpg' 的 JPEG 格式文件其中，imread() 函数用于读取图像文件，imrotate() 函数用于旋转图像，imshow() 函数用于显示图像，imwrite() 函数用于保存图像。

clc;clear all; img = imread('‪C:\Users\210\Desktop\123\mouse.jpg'); figure; imshow(img),title("原图像"); [ROW,COL] = size(img); img = double(img); new_img = zeros(ROW,COL); %新建画布 %定义robert算子 roberts_x = [1,0;0,-1]; roberts_y = [0,-1;1,0]; for i = 1:ROW - 1 for j = 1:COL - 1 funBox = img(i:i+1,j:j+1); G_x = roberts_x .* funBox; G_x = abs(sum(G_x(:))); G_y = roberts_y .* funBox; G_y = abs(sum(G_y(:))); roberts_xy = G_x * 0.5 + G_y * 0.5; new_img(i,j) = roberts_xy; end end figure(2); imshow(new_img/255),title("robert算子的图像"); % 定义laplace算子 laplace = [0,1,0;1,-4,1;0,1,0]; for i = 1:ROW - 2 for j = 1:COL - 2 funBox = img(i:i+2,j:j+2); G = laplace .* funBox; G = abs(sum(G(:))); new_img(i+1,j+1) = G; end end figure(3) imshow(new_img/255),title("laplace算子的图像"); %定义sobel算子 sobel_x = [-1,0,1;-2,0,2;-1,0,1]; sobel_y = [-1,-2,-1;0,0,0;1,2,1]; for i = 1:ROW - 2 for j = 1:COL - 2 funBox = img(i:i+2,j:j+2); G_x = sobel_x .* funBox; G_x = abs(sum(G_x(:))); G_y = sobel_y .* funBox; G_y = abs(sum(G_y(:))); sobelxy = G_x * 0.5 + G_y * 0.5; new_img(i+1,j+1) = sobelxy; end end figure(4); imshow(new_img/255),title("sobel的图像"); %定义Prewitt算子 sobel_x = [-1,0,1;-1,0,1;-1,0,1]; sobel_y = [-1,-1,-1;0,0,0;1,1,1]; for i = 1:ROW - 2 for j = 1:COL - 2 funBox = img(i:i+2,j:j+2); G_x = sobel_x .* funBox; G_x = abs(sum(G_x(:))); G_y = sobel_y .* funBox; G_y = abs(sum(G_y(:))); sobelxy = G_x * 0.5 + G_y * 0.5; new_img(i+1,j+1) = sobelxy; end end figure(5); imshow(new_img/255),title("Prewitt的图像");

这段代码中有一行 img = imread('‪C:\Users\210\Desktop\123\mouse.jpg');，你需要注意到这行代码中的路径字符串包含一个隐藏字符，可能导致 imread 函数无法正确读取图像文件。你可以尝试重新输入路径字符串，...

clear;clc;close all; img=imread('flower.tif'); gray=rgbimage2gray(img); %灰度化 %加入噪声 gray_noise=imnoise(gray,'salt & pepper',0.2); % 自适应中值滤波 f1 = adaptive_median_filter(gray_noise,11); if(size(img, 3) == 3) % Check if the image is a truecolor image f1 = gray2rgb(f1,img); end figure('color',[1,1,1]); subplot(221) imshow(img) title("原图") subplot(222) imshow(gray_noise) title("gray with noise") subplot(224) imshow(f1); title("自适应中值滤波") function f = adaptive_median_filter (g, Smax) % 判断邻域是否合理 if (Smax <= 1) || (Smax/2 == round(Smax/2)) || (Smax ~= round(Smax)) error ('SMAX must be an odd integer > 1.') end % f = g; f(:) = 0; % 标记是否已处理过 alreadyProcessed = false (size(g)); % 开始自适应滤波 for k = 3:2:Smax zmin = ordfilt2(g, 1, ones(k, k),'symmetric'); zmax = ordfilt2(g, k * k, ones(k, k), 'symmetric'); zmed = medfilt2(g, [k k], 'symmetric'); % 判断是否进入进程B processUsingLevelB = (zmed > zmin) & (zmax > zmed) & ~alreadyProcessed; % 若g不是脉冲，保留原值 zB = (g > zmin) & (zmax > g); outputZxy = processUsingLevelB & zB; %若是脉冲，用Zmed替换 outputZmed = processUsingLevelB & ~zB; f (outputZxy) = g(outputZxy); f (outputZmed) = zmed(outputZmed); % 已处理记录 alreadyProcessed = alreadyProcessed | processUsingLevelB; % 是否退出 if all (alreadyProcessed (:)) break; end end % 大于窗口尺寸后，Zxy替换成Zmed输出 f (~alreadyProcessed) = zmed (~alreadyProcessed); end function img_gray=rgbimage2gray(img) % 灰度变换,公式：f(x,y)=0.2989R+ 0.5870G + 0.1140B img_gray = img(:,:,1)0.2989+ img(:,:,2)0.5870+ img(:,:,3)*0.1140; end function img_rgb=gray2rgb(img_gray,img) % 将灰度图像转化为RGB图像 img_rgb = zeros(size(img)); img_rgb(:,:,1) = img_gray; img_rgb(:,:,2) = img_gray; img_rgb(:,:,3) = img_gray; end带有下标的赋值维度不匹配。出错 Untitled13>gray2rgb (line 75) img_rgb(:,:,1) = img_gray; 出错 Untitled13 (line 10) f1 = gray2rgb(f1,img);

这段代码中出现了错误，原因在于在函数gray2rgb中进行了赋值操作时，维度不匹配。...img_rgb = zeros(size(img)); img_rgb(:,:,1) = img_gray; img_rgb(:,:,2) = img_gray; img_rgb(:,:,3) = img_gray; end

补全代码：clear;clc % 读取图像文件 img = imread('Lena01.bmp'); img =imresize(img,0.2); % 显示原始图像 subplot(2, 2, 1); imshow(img); title('Original Image'); % 计算傅里叶变换 f = double(img); F = zeros(size(f)); [M, N] = size(f); for u = 0:M-1 for v = 0:N-1 for x = 0:M-1 for y = 0:N-1 end end end end % 显示傅里叶变换后的图像 subplot(2, 2, 2); imshow(log(1+abs(F)), []); title('Fourier Transform'); % 计算傅里叶逆变换 f2 = zeros(size(f)); for x = 0:M-1 for y = 0:N-1 for u = 0:M-1 for v = 0:N-1 end end end end

f2(x+1, y+1) = f2(x+1, y+1) + F(u+1, v+1) * exp(2j*pi*((u*x/M)+(v*y/N))); end end end end % 显示傅里叶逆变换后的图像 subplot(2, 2, 3); imshow(uint8(f2)); title('Inverse Fourier Transform'...

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