Reading and showing multiple .png format pictures from a folder

2011 12 25
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heyyy i am stuck in reading multiple .png format files from a folder and then i want to show it as well... i am using imread and imshow functions as well but its not working.. any idea? please help soon as i want it urgent :(

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Jan
Jan 2011-12-25
I have removed the "urgent help --->". The term "urgent" does not encourage users to help you.

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Image Analyst
Image Analyst 2011-12-25

1 个投票

Have you seen the FAQ? http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F
Beyond that, if your code doesn't work and the FAQ code doesn't work, you're going to have to post your exact code for us to figure out what is going wrong. Can you view a single one of your images with imread() and imshow() without doing it in a loop?

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bubble trouble
bubble trouble 2011-12-25

0 个投票

welll this is my code without loop and now i want to read multiple image files from a folder and perform the same task from line 2 till the showing command (imshow())...
im = imread('exp30096.png');
a=rgb2gray(im);
b=imresize(a,0.4);
c=medfilt2(b,[3 3]);
X=c;
figure; imshow(F);
and the link u posted really sounds helpful will implement it and will let you know ! thank you soooo much!!
[EDITED: Code formatted, Jan Simon]

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bubble trouble
bubble trouble 2011-12-25
out of this.. do you have ne idea as to how extract only round objects from an image, because i tried but there is always a threshold problem i have to change it every time..
Image Analyst
Image Analyst 2011-12-25
I see no reason why your code should not work, though you can just show c and don't need the intermediate variable X. Even better would be if you chose descriptive variable names like rgbImage or grayImage rather than cryptic one or two letter variable names. What happens when it tries to execute the imshow() command? Is there some error message? Or does it just hang? Or does it display an all black image? What???
Image Analyst
Image Analyst 2011-12-25
star girl, you should see my BlobsDemo at:
http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862
If you still have problems after that post your image to tinypic.com.
Walter Roberson
Walter Roberson 2011-12-25
The code shown here does not define F.
Image Analyst
Image Analyst 2011-12-25
You're right. I just glossed over that and assumed the imshow was showing the intermediate value X. Yep, that would cause the problem, and shows how things can be solved sooner if people would just post the actual error messages.

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