I have a pattern recognition problem in which I am trying to convert a PRdatafile containing set of images as its objects, into individual image files. Anybody that knows how to do that?

this is a part of my code:

a = prnist([0:9],[1]); % Taking the NIST dataset and displaying 10 digits obj = a(1); % Taking first object of the dataset

Now how do I convert this object( which is an image) into an image file. I have to perform certain image processing operations on this image file.

Thanks!

Answer 1

[Image Analyst]

If (the badly-named) a is an image array, you can create a file by creating a filename string and then using imwrite:

imwrite(a, fullFileName);

[Gaurav]

Thanks, but imwrite function does not work with prdatafiles. I have tried using it.

[Image Analyst]

Sorry - a was your dataset. Use obj, the image that you pulled out of the data set. I didn't notice it because you didn't properly format your code like this shows you: http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup. So, now assuming obj is the image, as you seemed to say:

imwrite(obj, fullFileName);