function [ ] = BUPT_subsample( path,fh,fv ) %This function subsamples an image %input path is the path of image to be processed %input fh is the horizontal sample factor; %input fv is the vertical sample factor; original_data=imread(path); [row,line,z]=size(original_data); sampled_data=original_data(1:fh:row,1:fv:line,:);%subsmaple according to input factors imwrite(sampled_data,'sampled.tif');%save the output imshow(original_data),figure,imshow('sampled.tif'); end当我通过path = './test_images/Lena512_ASCII2014.pgm'; % image path fh = 2; % Horizontal sampling factor fv = 0; % Vertical sampling factor BUPT_subsample(path, fh, fv); % Call the subsampling function调用这个函数时,出现了报错,请帮我修改代码
时间: 2024-03-03 07:48:29 浏览: 125
根据你提供的信息,出现错误的原因是垂直采样因子fv设置为0,导致sampled_data变量为空,无法使用imwrite函数保存。建议将fv设置为1或者其他正整数,例如:
```
function [] = BUPT_subsample( path, fh, fv )
%This function subsamples an image
%input path is the path of image to be processed
%input fh is the horizontal sample factor;
%input fv is the vertical sample factor;
original_data = imread(path);
[row, line, z] = size(original_data);
sampled_data = original_data(1:fh:row, 1:fv:line, :); %subsmaple according to input factors
imwrite(sampled_data, 'sampled.tif'); %save the output
imshow(original_data), figure, imshow('sampled.tif');
end
```
这样修改之后,再次调用BUPT_subsample函数就不会出现报错了。
相关问题
image1 = BUPT_readPPM('Baboon512C_ASCII2014.ppm', 'P3'); image2 = BUPT_readPPM('Baboon512C_Binary.ppm', 'P6');
这个代码段中,第一行和第二行分别调用了`BUPT_readPPM`函数,将读取的图像数据保存到了`image1`和`image2`两个变量中。其中,第一个参数是待读取图像的文件名,第二个参数是图像的类型(这里都是PPM格式的图像,类型分别为P3和P6)。
值得注意的是,这里的`BUPT_readPPM`函数是一个自定义函数,它可能与您所使用的MATLAB版本或工具箱不兼容。如果您在运行代码时遇到了错误,请检查该函数是否存在或者是否正确安装,并查看其用法说明。
function [ output_args ] = BUPT_histo_mod( patho,pathm) %UNTITLED Summary of this function goes here % Detailed explanation goes here Io=imread(patho); Im=imread(pathm); Iohist= imhist(Io); New=histeq(Im,Iohist); figure,imshow(New),title('modelled_image'); figure,imhist(New),title('modelled_hist'); imwrite(New,'lena_modeled_peppers.jpg'); end请为这段代码添加注释
% 这是一个函数,函数名为 BUPT_histo_mod,输入参数为 patho 和 pathm
% patho 为原始图像的路径,pathm 为要模拟的图像的路径
function [ output_args ] = BUPT_histo_mod( patho,pathm)
% 读取原始图像
Io=imread(patho);
% 读取要模拟的图像
Im=imread(pathm);
% 计算原始图像的直方图
Iohist= imhist(Io);
% 对要模拟的图像进行直方图均衡化,并使用原始图像的直方图进行模拟
New=histeq(Im,Iohist);
% 显示模拟后的图像,并设置标题为 'modelled_image'
figure,imshow(New),title('modelled_image');
% 显示模拟后的图像的直方图,并设置标题为 'modelled_hist'
figure,imhist(New),title('modelled_hist');
% 将模拟后的图像保存为 'lena_modeled_peppers.jpg'
imwrite(New,'lena_modeled_peppers.jpg');
% 函数结束
end
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