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# Open Source Java Image Creation Library

Posted on 2011-03-22
Medium Priority
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Last Modified: 2012-05-11
Hello,

Anyone have any recommendations on an open source library I can use to create Images from  user uploaded images.  I have the file upload part working but I need to take that image and create a two new ones with a default width and a height that is in proportion and then store those on a linux box.  Thanks for the suggestions!
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Question by:cgray1223
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13 Comments

LVL 47

Expert Comment

ID: 35196286
You mean you want to scale the pictures?
What is the format of image files which your are uploading?
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LVL 86

Expert Comment

ID: 35196363
Try JMagick - it's fast and you'll probably find that at least some of the dependencies are already installed:

http://javabog.dk/jmagick/old_website/www.yeo.id.au/jmagick/
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LVL 92

Expert Comment

ID: 35197118
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LVL 92

Expert Comment

ID: 35197134
let me know if you need help with anything specific
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Author Comment

ID: 35197715
A user is uploading files of type jpg, gif and png and then I need to take those and resize them.  One a thumbnail and one a larger image.
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LVL 47

Expert Comment

ID: 35200416

These are some more links about resizing and preparing Thumbnails of
jpg and other image files using Java:

http://www.velocityreviews.com/forums/t292186-java-thumbnail-resize-image-app.html

http://www.mkyong.com/java/how-to-resize-an-image-in-java/
0

LVL 92

Expert Comment

ID: 35202716
you would either read image from stream, or read it from a the byte array read from user using ImageIO
then you can resize it using Java2D
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Author Comment

ID: 35203253
Where I'm not sure is that I can go one of two routes.  I can store the uploaded file in some temp directory and create two images from it or I can convert the upload image into a byte[].  What is easier to work with?  I just need to take the incoming file and create a 200x200 and a 800x800 image from it.  Thanks for all the help!
0

LVL 92

Expert Comment

ID: 35203286
you don't need to create a file, you can process the image directly

>  or I can convert the upload image into a byte[].

the uploaded image should already be a byte array

0

LVL 86

Expert Comment

ID: 35203369
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Author Comment

ID: 35209717
Objects,
I have the below code I want to use but instead of a file I have a InputStream inputStream = event.getFile().getInputstream(); How do I create a BufferedImage using an InputStream?  Thanks for all your help!

BufferedImage image = ImageIO.read(new File("C:\\Users\\User\\Downloads\\picture.jpg"));
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LVL 86

Expert Comment

ID: 35210266
For InputStream 'in':

BufferedImage image = ImageIO.read(in);

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LVL 92

Accepted Solution

objects earned 2000 total points
ID: 35210928
> I have the below code I want to use but instead of a file I have a InputStream inputStream = event.getFile().getInputstream(); How do I create a BufferedImage using an InputStream?

http://helpdesk.objects.com.au/java/how-do-i-read-an-image-from-an-input-stream

> Thanks for all your help!

no worries :)
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