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#1 Posted : Wednesday, September 28, 2011 3:48:59 AM(UTC)
rajknoida

Groups: Registered
Posts: 20


Hi,

I want to remove background image from raster image viewer on a button click but annotation remains.

i am using following code

RasterCodecs codecs = new RasterCodecs();
Viewer.Image = codecs.Load(ImageFilePath);
 

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#2 Posted : Wednesday, September 28, 2011 4:24:34 AM(UTC)
rkishore

Groups: Registered
Posts: 9


Hi,

I have a TIF loaded in the Raster viewer. I have created a annotation object on top of it. Now I have to hide the raster image without hiding the annotations.

What I want to achieve:
1. TIF image loaded should not be visible only the annotation created on top of it should be visible.
2. The background of the Annotation should be white or any color, but the image loaded shouldn;t be visible.
3. On the button click I want to toggle this functionality.

Thanks and Regards
Raj
 
#3 Posted : Thursday, September 29, 2011 5:47:32 AM(UTC)
Maen Hasan

Groups: Registered, Tech Support
Posts: 1,328

Was thanked: 1 time(s) in 1 post(s)

You can keep all the annotations visible, and also keep the bitmap's pixel data unchanged, but make them all appear pure white by changing the paint intensity of the image.
Here's code sample:

//Step 1: Save old value in an integer variable
OldIntensity = Viewer.Image.PaintIntensity;
//Step 2: Set the intensity to maximum value to make everything white
Viewer.Image.PaintIntensity = 1000;

When you want to return the display to its previous state, simply return the paint intensity as follows:
Viewer.Image.PaintIntensity = OldIntensity;

Thanks,
Maen Badwan
LEADTOOLS Technical Support
 
#4 Posted : Thursday, September 29, 2011 8:52:24 AM(UTC)
rkishore

Groups: Registered
Posts: 9


Hi Maen Hasan

Hat's off to u man.. Only person, who always helps me out.

Thanks a lot man.

Regards
Raj
 
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