Question about displaying existing annotations within an image

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This topic and its replies were posted before the current version of LEADTOOLS was released and may no longer be applicable.

#1 Posted : Tuesday, December 12, 2006 11:49:54 AM(UTC)

MrWayne

Groups: Registered
Posts: 14

Our image display code currently uses a class derived from LBitmapWindow to manage viewing images files, navigating between pages, zooming, panning, etc.

We need to be able to load and display annotations that may be present in a tif image. We do not need to create, select, or modify any existing
annotations.

Is there a basic way to piggyback painting and display of the annotations into our existing code?

I am able to programmatically create annotation objects and save them to TIFs. The Windows Picture Viewer loads the resulting images and displays the annotations.

Thanks


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#2 Posted : Wednesday, December 13, 2006 1:15:56 AM(UTC)

Maen Hasan

Groups: Registered, Tech Support
Posts: 1,326

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

Hello,

Do you mean that you want to display the saved annotation in a TIFF image using LEADTOOLS?
If yes, you may try to use the LAnnotationWindow class and call the LAnnotationWindow::AnnLoad method to load annotations stored in TIF files.
What is exact LEADTOOLS version that you use?

Thanks,
Maen Badwan
LEADTOOLS Technical Support

#3 Posted : Wednesday, December 13, 2006 5:21:00 AM(UTC)

MrWayne

Groups: Registered
Posts: 14

Yes, I do want to display the saved annotation from the TIFF image.

I originally tried deriving my image class from LAnnotationWindow instead of LBitmapWindow. This method seemed to work as far as displaying the TIFF and detecting presence of an annotation after AnnLoad(). I was unable to actually display the annotation.

I was also unable to draw highlights on the image that I had been able to do with LBitmapWindow. I still need to review exactly which LBitmapWindow calls stopped working.

The main purpose of this post was to find out if there was a different mechanism than LAnnotationWindow that I should be using. I will let you know what happens when I get back to it.

We are using version 14.5.

Thanks.

#4 Posted : Thursday, December 14, 2006 5:32:02 AM(UTC)

Maen Hasan

Groups: Registered, Tech Support
Posts: 1,326

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

Hello,

You can check the LEADTOOLS C++ Class Library Annotation demo that uses the LAnnotationWindow to load, draw, display and save annotations.
You can find the demo installed onto the following location on your machine:
..\Program Files\LEAD Technologies, Inc\LEADTOOLS 14.5\Examples\CLASSLIB\MSVC5\ANNOTATE

Thanks,
Maen Badwan
LEADTOOLS Technical Support

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