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Artifacts in magnified layer - 16-bit grayscale

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yeohray2

Malaysia
106 Posts

Posted - Nov 29 2020 : 21:30:19

I am using a magnified layer on a 16-bit grayscale image. When the image is not zoomed, the magnified layer (at 100%) appears ok.

When the underlying image is zoomed in, the magnified layers starts showing artifacts.

Moving the magnified layer out of the way shows the 'normal' image again.

Is there a way to avoid the magnified layer showing the artifacts? I have tried changing the pixel format and the zoom filters, but the artifacts still appear. Thank you.

xequte

38611 Posts

Posted - Nov 30 2020 : 04:15:32

Hi

Can you post this image, or email it to me.

Nigel
Xequte Software
www.imageen.com

yeohray2

Malaysia
106 Posts

Posted - Nov 30 2020 : 08:21:02

Here it is, as an attachment.

attach/yeohray2/2020113082051_IM_0001.zip
93.19 KB

xequte

38611 Posts

Posted - Dec 01 2020 : 19:57:53

Hi

I was unable to reproduce that with the demo:

\Demos\Testing\Display\Magnify2\Magnify2.dpr

Can you give me the precise steps?

Are you enabling the resample filter for the layer?

TIEImageLayer( ImageEnView1.Layers[1] ).ResampleFilter := rfFastLinear;
TIEImageLayer( ImageEnView1.Layers[1] ).UseResampleFilter := True;

Nigel
Xequte Software
www.imageen.com

yeohray2

Malaysia
106 Posts

Posted - Dec 01 2020 : 22:50:43

Thanks, turned out the artifacts was caused by me not setting the Manify.Source value to iemBackgroundLayer.

xequte

38611 Posts

Posted - Dec 01 2020 : 23:21:25

OK, thanks for the update.

Nigel
Xequte Software
www.imageen.com

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