Home | Contact Us | FAQ | Search & Site Map | Link to Us
Sign In | Join | Other 45 Sites in Network
HomeAnnouncementsWhite Papers
Discussion GroupsFirst AidDatabasesJavaBeansGUIJava 3DVirtual MachineCORBASecurityToolsGeneral
Java DirectoryOpen Source ProjectsSample Book ChaptersUser GroupsWeb Resources
Related Topics
Databases.NETMore Topics ...

Java Forum / GUI / May 2007

Tip: Looking for answers? Try searching our database.

drawImage with scale on BufferedImage performance issue

Thread view: 
swebb99@gmail.com - 02 May 2007 14:02 GMT
Hi,

I have noticed a big performance hit if I call drawImage(image, x, y,
width, height, null) and the image is a BufferedImage.

I need a bufferedimage because I am creating a gray image off another
Image. So I call :-

BufferedImage bI = new BufferedImage(img.getWidth(null),
img.getHeight(null), BufferedImage.TYPE_BYTE_GRAY);
Graphics2D g2 = bI.createGraphics();
g2.drawImage(img, 0, 0, null);
g2.dispose();
return (Image)bI;

If I display the original image (not buffered) its fine. Also if I'm
not using TYPE_BYTE_GRAY but RGB its fine !!!!!

Java 1.4.2 by the way

Any idea's

Steve
Knute Johnson - 02 May 2007 17:34 GMT
> Hi,
>
[quoted text clipped - 19 lines]
>
> Steve

Steve:

If both your images can be BufferedImages then you can get a pretty good
improvement over drawing by using a ColorConvertOp.

Signature

Knute Johnson
email s/nospam/knute/



Free Magazines

Get these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...

Oracle MagazineNetwork ComputingComputer WorldBio-IT WorldeWeekInformation WeekInfosecurity
 
Sign In
Join
My Latest Posts
My Monitored Threads
My Blog
My Photo Gallery
My Profile
My Homepage

Start New Thread
Enable EMail Alerts
Rate this Thread



©2008 Advenet LLC   Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.