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bitmap extrusion wall expansion

New Here ,
Jul 06, 2017 Jul 06, 2017

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Ok. This can't be too hard to understand? eh?

aeon1_cropped.JPEG

This is a bitmap created from an indoor scan of a Mall.

I've been using them to be extruded into 3d models.

(inserted below)

3d extruded.PNG

however, This is really messy and instead of having dugout-type hallways, I want to have building-like walls. To do this, the black pixels on the edge of the scan need to be combined and thickened. Is there any way I can outline or expand the size of each black pixel to join with the next black pixel and make a wall?

sorry if it's confusing. here's an example of what im looking to do.rough thing I want.PNG

Yes, this is very rough, and there's probably no way to make it complete the line all the way around, but can I use those black pixels on the edge to connect somehow or bleed outwards so it's more than one or two pixels of edge all the way around?

thanks

-Jon

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correct answers 1 Correct answer

Community Expert , Jul 07, 2017 Jul 07, 2017

It took about 30 seconds.

I selected the grey colour with select color range.

Added a layer layer mask hiding that selection.

Then added a layer style with the black stroke. (that layer style could be copied and pasted to other layers).

Dave

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Community Expert ,
Jul 06, 2017 Jul 06, 2017

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Do you mean like this - which was just a mask then a layer style stroke

Or have I missed the point? If so - please explain further

Dave

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New Here ,
Jul 07, 2017 Jul 07, 2017

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That looks like a good option, but I have like 20 of these files and I don't want to do it manually. Is there an effect or something that would automatically do that so I don't have to manually do that? I've been using batches and automatic processes to go through each bitmap.

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Community Expert ,
Jul 07, 2017 Jul 07, 2017

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It took about 30 seconds.

I selected the grey colour with select color range.

Added a layer layer mask hiding that selection.

Then added a layer style with the black stroke. (that layer style could be copied and pasted to other layers).

Dave

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New Here ,
Jul 07, 2017 Jul 07, 2017

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Awesome. thanks.

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Community Expert ,
Jul 07, 2017 Jul 07, 2017

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Actually re-reading that I missed a step.

Before doing any of the above, I duplicated the layer. Then.... selected the grey......etc

That way the original grey showed underneath the masked layer

Dave

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