How to save an image using its URL

I did this steps and it didn't worked!

url_img =

http://satelite.cptec.inpe.br/repositorio7/goes13_met10/goes13_met10_web/ams_afc_alta_jpg/2014/10/S11185873_201410150000.jpg

name_file_img =

20141015-00:00.jpg

>> urlwrite(url_img, name_file_img); Error using urlreadwrite>getFileOutputStream (line 245) Could not open output file "C:\Users\Albm\Documents\MATLAB\2014\10\15\2014\10\15\2014\10\15\2014\10\15\20141015-00:00.jpg".

Error in urlreadwrite (line 69) [file,outputStream] = getFileOutputStream(inputs.filename);

Error in urlwrite (line 38) [f,status] = urlreadwrite(mfilename,catchErrors,url,filename,varargin{:});

Answer 1

[matt dash]

You just can't have a colon in a file name, that's all.

[Star Strider]

Good pick-up!

I completely overlooked that.

[Arthur Melo]

Thanks everybody and sorry, but matt dash gave me the perfect answer, some times we forget too basics things. I don't know why. Thank you matt, now I have no problem.

Answer 2

[Image Analyst]

You need to use imwrite() if you want to save an image, not urlwrite().

[Image Analyst]

This code saves the image to my computer just fine for me. Does it work for you?

% Specify the filename (URL).
filename = 'http://satelite.cptec.inpe.br/repositorio7/goes13_met10/goes13_met10_web/ams_afc_alta_jpg/2014/10/S11185873_201410150000.jpg';
% Read it in to a variable in my m-file.
rgbImage = imread(filename);
% Display the image.
imshow(rgbImage);
% Save the image to a file on my local hard drive.
imwrite(rgbImage, 'satellite image.jpg');

[Mykola Ponomarenko]

In this example rgbImage is saved with additional lossess (with a re-compression). To save the original JPEG file one needs to use urlwrite function.

[Image Analyst]

@Mykola Ponomarenko

To get no additional losses, use PNG format

imwrite(rgbImage, 'satellite image.png');

Can you show an example of how you'd save your image array with urlwrite()? The documentation only shows how to save web pages as HTML format, not how to save image data in PNG format.

[Augusto Gabriel da Costa Pereira]

This code is perfect. Thanks @Image Analyst