[英]Read multiple images on a folder in Matlab
I have a problem reading multiple images in Matlab from a folder. 我在从一个文件夹中读取Matlab中的多个图像时遇到问题。 I want to read with their original name (with the command imread because are multiband). 我想用他们的原始名称阅读(使用命令imread因为是多频段)。 The names of the images are like '2001_01', '2001_02'. 图像的名称类似于“2001_01”,“2001_02”。 This is my code: 这是我的代码:
myPath= 'C:\images\'; %'
a=dir(fullfile(myPath,'*.tif'));
fileNames={a.name};
And then... 然后...
for k = 1:length(fileNames)
filename = [fileNames(k).name];
I = imread(filename);
end
But it doesn't work and I don't know how to save and imread each one individually. 但它不起作用,我不知道如何单独保存和imread每一个。 Does somebody know how can I do it? 有人知道我该怎么办? Really thanks in advance, 非常感谢提前,
Regarding the first problem: 关于第一个问题:
But it doesn't work... 但它不起作用......
Just assign the output of dir
directly into fileNames
(without brackets): 只需将dir
的输出直接分配到fileNames
(不带括号):
fileNames = dir(fullfile(myPath, '*.tif'));
Regarding the second problem: 关于第二个问题:
... I don't know how to save and
imread
each one individually. ......我不知道如何保存和单独imread
每一个。
it seems that you need a cell array to store all images in a single collection. 您似乎需要一个单元格数组来存储单个集合中的所有图像。 First, define the cell array to have the right size: 首先,将单元格数组定义为具有正确的大小:
C = cell(length(fileNames), 1);
and then store each image into a different cell: 然后将每个图像存储到不同的单元格中:
for k = 1:length(fileNames) filename = fileNames(k).name; C{k} = imread(filename); end
To access any image in the cell array C
later, use curly braces ( {}
). 要稍后访问单元格数组C
中的任何图像,请使用花括号( {}
)。 For instance, the second image is accessed as follows: C{2}
. 例如,第二个图像的访问方式如下: C{2}
。
Instead of 代替
fileNames={a.name};
Try 尝试
fileNames = arrayfun( @(x) fullfile( myPath, x.name ), a, 'UniformOutput', false );
Then, in the loop you can access the k
-th file name as 然后,在循环中,您可以访问第k
个文件名
I = imread( filenames{k} );
Does it return the full file path? 它是否返回完整的文件路径? fileNames(k).name ? fileNames(k).name? or just the actual file name? 或只是实际的文件名? You might need to append myPath with filename taking care of slashes as well 您可能需要使用带有文件名的myPath附加myoff来处理斜杠
fileName = strcat(myPath, fileName)
Then do the imread, make sure you have looked at the slashes once contactenated 然后做imread,确保你看过斜线一旦接触
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