Handling large image files...

Hello All,
Few days back I posted a query regarding handling of Satellite Imagery but didn't got any responses...
Well, what I'll try to do now that I'll post the same question in adifferent way.
In my current project, we require textures of around 1024*1024 pixels and around 15 to 20 in numbers to be simulataneously displayed in the scenegraph. We are using a good Hardware Accelerator Card with sufficient memory ..... but the overall performance degrades a lot.
Any suggestions regarding handling these images (or some sort of dynamic loading)
Regards

Hello,
you should use Mipmaps.
http://java.sun.com/products/java-media/3D/collateral/
Chapter 7.6
Regards,
Oliver

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/community [original link is broken]:///people/michal.krawczyk2/blog/2006/06/08/xi-timeouts-timeouts-timeouts
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Image of demo
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manually specify a new bitmapdatasize, but these values seem to
always have NaN.
private function makeThumbnail():void{
// create a thumbnail of 100x100 pixels of a large file
// What I want to create is a a thumbnail with the longest
size of the aspect
// ratio to be 100 pixels.
var img:Image = new Image();
//Add this event listener because we cant copy the
BitmapData from an
/// image until it is loaded.
img.addEventListener(FlexEvent.UPDATE_COMPLETE,
imageLoaded);
img.width=100;
img.height=100;
img.scaleContent=true;
img.visible = true;
// This is the image we want to make a thumbnail of.
img.load("file:///C:/T5.jpg");
img.id = "testImage";
this.addChildAt(img, 0);
private function imageLoaded(event:Event):void
// Grab the bitmap image from the Input Image and
var bmd:BitmapData =
getBitmapDataFromUIComponent(UIComponent(event.target));
//Render the new thumbnail in the UI to see what it looks
theImage.source = new Bitmap(bmd); //new Bitmap(bmd);
public static function
getBitmapDataFromUIComponent(component:UIComponent):BitmapData
var bmd:BitmapData = new
BitmapData(component.width,component.height );
bmd.draw(component);
return bmd;
}

Hi Tod,
Take a look at this post:
I'll have to say the smoothing of the thumb is not perfect, but maybe in combination with your code.. you get good results.
Post a solution if you acheive better smooth thumb results.
Link to forum post:http://forums.adobe.com/message/260127#260127
Greets, Jacob

Will more RAM help handle large Excel files?

Hi everyone,
I know this message may be better suited to the Office for Mac Forums website, but the site hasn’t been able to validate me as a new user so far (it's been weeks of trying!), and I’m therefore unable to ask a question. So I have to resort to annoying you here.
I run Excel 2008 (12.1.7) on a 8-core Mac Pro (early 2008) with 6 Gb of RAM (OS 10.5.6). I encounter a lot of problems working with big files, such as a 385 Mb file comprised of over 600,000 row and 50 columns of mostly data (only a few columns are filled with simple formulas).
After loading the file (which took quite a while), the Activity Monitor indicated that Excel was using 1.12 Gb of Real memory an 2.11 Gb of Virtual, while 3.66 Gb of RAM was free. When I then attempted to create a PivotTable with this data, the amount of memory used by Excel gradually rose to 1.94 Gb of Real an 2.93 Gb of Virtual (2.85 Gb of Free memory was still available) while reading the data. At this point I then got a message stating that there’s not enough memory. I had to resort to breaking the file up into smaller ones to analyze the data, which is quite annoying.
I was told that being a 32-bit application, Excel 2008 was limited to handling 4 Gb of RAM. But I thought that 4 Gb being way more than the size of the file on disk, and having 6 Gb of RAM on my machine, I shouldn’t have any problem working with it. Obviously I was wrong. Can someone please clarify what’s going on here? Would more RAM significantly help?
Any help will be greatly appreciated. Thank you!

Yes, I bet the Windows version of Excel is better. I think it’s definitely time to try it.
When you say “having 8 DIMMs”, do you mean filling up the 8 memory slots, or having 8 Gb? I believe I remember seeing that 10 Gb was the sweet spot, with all 8 memory slots occupied. Is that right? And what brand of RAM do you like currently, still OWC?
Thank you Hatter.

Handling large image files...

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