将文件夹中的所有图像RGB转灰,以原名保存到其他文件夹
RGB to gray conversion of all image in a folder, save them to other folder with original names
我有将图像转换为灰色并将其保存在当前文件夹中的代码:
directory = dir('AM01AFS.jpg');
for i = 1 : size(directory,1)
filename = directory(i).name;
img = rgb2gray(imread(filename));
imwrite(img, ['Gr_' filename]);
end
我需要将文件夹(图像)从 RGB 转换为灰色,并将它们保存在 Output
文件夹中,并具有相同的原始名称。
您的代码看起来不错。
我希望您需要将 RGB 转换为 Gary,而不是将 GRB 转换为 Gary...
- 修改
directory = dir('AM01AFS.jpg');
为directory = dir('*.jpg');
创建新的输出目录,如果您不想覆盖现有图像。
%Assume jpg images are in the same directory as the m file.
indir = cd; %Modify the indir to location of the jpg files.
outdir = 'Gray'; %Name or output directory.
directory = dir([indir, '\', '*.jpg']);
if ((~exist(outdir, 'dir') && length(directory) > 0))
%Create new directory named outdir if directory not exist.
mkdir(outdir);
end
for i = 1 : length(directory)
filename = directory(i).name;
rgb_img = imread([indir, '\', filename]);
if (ndims(rgb_img) == 3) %Make sure img is RGB (not gray).
img = rgb2gray(rgb_img);
%Save gray image to outdir (keep original name).
imwrite(img, [outdir, '\', filename]);
end
end
如果您想打开文件夹选择对话框,可以使用以下示例:
%Open folder selection dialog box, for selecting input and output folders.
indir = uigetdir(cd, 'Select input folder');
outdir = uigetdir(cd, 'Select output folder');
directory = dir([indir, '\', '*.jpg']);
for i = 1 : length(directory)
filename = directory(i).name;
rgb_img = imread([indir, '\', filename]);
if (ndims(rgb_img) == 3) %Make sure img is RGB (not gray).
img = rgb2gray(rgb_img);
%Save gray image to outdir (keep original name).
imwrite(img, [outdir, '\', filename]);
end
end
我有将图像转换为灰色并将其保存在当前文件夹中的代码:
directory = dir('AM01AFS.jpg');
for i = 1 : size(directory,1)
filename = directory(i).name;
img = rgb2gray(imread(filename));
imwrite(img, ['Gr_' filename]);
end
我需要将文件夹(图像)从 RGB 转换为灰色,并将它们保存在 Output
文件夹中,并具有相同的原始名称。
您的代码看起来不错。
我希望您需要将 RGB 转换为 Gary,而不是将 GRB 转换为 Gary...
- 修改
directory = dir('AM01AFS.jpg');
为directory = dir('*.jpg');
创建新的输出目录,如果您不想覆盖现有图像。
%Assume jpg images are in the same directory as the m file. indir = cd; %Modify the indir to location of the jpg files. outdir = 'Gray'; %Name or output directory. directory = dir([indir, '\', '*.jpg']); if ((~exist(outdir, 'dir') && length(directory) > 0)) %Create new directory named outdir if directory not exist. mkdir(outdir); end for i = 1 : length(directory) filename = directory(i).name; rgb_img = imread([indir, '\', filename]); if (ndims(rgb_img) == 3) %Make sure img is RGB (not gray). img = rgb2gray(rgb_img); %Save gray image to outdir (keep original name). imwrite(img, [outdir, '\', filename]); end end
如果您想打开文件夹选择对话框,可以使用以下示例:
%Open folder selection dialog box, for selecting input and output folders.
indir = uigetdir(cd, 'Select input folder');
outdir = uigetdir(cd, 'Select output folder');
directory = dir([indir, '\', '*.jpg']);
for i = 1 : length(directory)
filename = directory(i).name;
rgb_img = imread([indir, '\', filename]);
if (ndims(rgb_img) == 3) %Make sure img is RGB (not gray).
img = rgb2gray(rgb_img);
%Save gray image to outdir (keep original name).
imwrite(img, [outdir, '\', filename]);
end
end