Low quality texture in version 1.5

Development Asset Creation
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1

After updating from v 1.4.2 to 1.5 I noticed dramatic change in texture quality in a bad way
I kept the same texture settings:

-set "unwrapMinTexResolution=4096" ^
-set "unwrapMaxTexResolution=4096" ^
-set "txtImageDownscaleColor=1" ^
-set "ImageLayerForTexturing=all" ^
-set "unwrapStyle=MaxTexturesCount" ^
-set "unwrapMaximalTexCount=1" ^
-calculateTexture ^

In both cases the texture files produces with sizes 4096x4096, but visually there’s such a big difference: same scan processed with 1.4.2 (left) and 1.5 (right)

image
image1008×767 85.2 KB

2

Hi Serob,
this is really strange.
Can you show also the second model in RealityCapture? Or first model in the same app?
For the models, is the alignment and mesh the same?

3

Here are the textures in RC

RC-face
RC-face1588×636 244 KB

Alignment count is the same, meshes are almost identical:

image
image1162×530 75 KB

4

Hi Ondrej

Had you a chance to have a look to the issue?
What kind of suggestion can you give here?

5

Hi Serob, sorry for my late answer.
Can you try to use the 1.4 project in 1.5 version and texture that model?
To be sure to have the same alignment and model, as each new alignment could be slightly different.
Also, is this the dataset from the mentioned full body scan?

6

Hi Ondrej,
Seems I’ve found the issue.
In the app documentation you have the following:

RC-text
RC-text609×116 2.86 KB

So following the documentation we used txtImageDownscaleColor to control the texture downscale factor. But it turned out that actually it controls coloring downscale factor (as the name suggests). I can not say from which version this change happened, but as I remember it was actually controlling the texture downscaling before.
So for some reason the default texture downscale factor was lower in 1.5 version, and when I applied txtImageDownscaleColor=1 from the script, it did not affect that value, and the default lower one was used.

Correcting the documentation would be a good idea.
Thank you!

7

Hi Serob,
thank you for noticing this. I informed my colleague about it.