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Overthere!
Overthere!
Comments: 1
Horo

29.03.2024, 08:03








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There, under clouds
There, under clouds

            

There, under clouds
Description: Bryce 7.1 Pro.

Render of Regular AA, 2 hours.
In order to snow in the shadow areas look realistic, I used HDRI (by Rashad, changed) as the background and alpha scaling in the channel of Ambience.
Added by: slepalex
Keywords: alpha scaling, mountains, snow, slepalex
Date: 04.07.2012 23:48
Hits: 5707
Downloads: 76
Rating: 1.40 (10 Vote(s))
File size: 469.2 KB
Previous image: Alien horizons



Author: Comment:
rashadcarter1
Admin

Join Date: 06.04.2006
Comments: 2610
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Nice to see that sky getting some use. Everything about this render is perfect. The terrain has some sort of ribbing effect. Seems like an artifact of some sort. Sometimes there are compression issues with 8bit image maps.A slight bit more blue in the indirect light would have helped the impression along a little further, Still I think this scene is quite magical!!
04.11.2012 11:18 Offline rashadcarter1 rashadcarter1 at aol.com
davidbrinnen
Admin

Join Date: 01.03.2004
Comments: 2224
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Rashad has said it all really. A magical scene, the light is superb and the material choices excellent. The only issue, as observed, is the pixelation on the mountains. 5/5
04.11.2012 15:09 Offline davidbrinnen mail at davidbrinnen.co.uk http://www.davidbrinnen.com
slepalex
Member

Join Date: 10.15.2010
Comments: 881
-

Thanks Rashad, David.
Mountains are made in Geocontrol and modified in TE Bryce 2048x2048 resolution with uncheck "Smooth". Initially, in Geocontrol the map of heights has resolution of 16 bit (*.pgm format). After change in TE (and even in PhotoPaint) and preservation in BMP the map of heights loses resolution and turns in 8 bit? The Smooth function in TE doesn't improve a situation. I couldn't understand this question, unfortunately.
By the way, Photo Paint does not read the format *. Pgm. I downloaded through IrfanView. As soon as the height map is loaded in IrfanView, it loses the properties of 16-bit and becomes overly discrete map 8bit. If File.pgm loaded directly into Bryce (file-import object), then everything is fine!
04.11.2012 16:28 Offline slepalex slepalex at yandex.ru
slepalex
Member

Join Date: 10.15.2010
Comments: 881
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I will add for clarity. As soon as you modify the loaded map of *pgm in TE, it loses the properties of high resolution and turns into awfully discrete, step-like form.
04.11.2012 16:42 Offline slepalex slepalex at yandex.ru
davidbrinnen
Admin

Join Date: 01.03.2004
Comments: 2224
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I have had many such battles with the TE. Here is what I have learned...

1. Using the filter tab will definitely reduce the bit level to 8 bit.

2. The importers for .png and .tiff formats do not function reliably - therefore it does not surprise me to learn .pgm is also does not work properly.

3. Loading through the "picture" button, providing the terrain was saved as a .tiff 16bit greyscale format image - does work. But it is quite specific, it has to be not only a grayscale image, but it must be in .tiff grayscale format also.

Loading via method 3 will retain 16 bit and will allow the heightmap to be modified using all the controls in the TE except the filter tab (see point 1).

The exporters like the importers (see point 2) also do not work reliably and render the scene down to 8 bits. If a 16 bit hightmap output is required it has to be rendered by devious means. Very devious. This is what we have discussed somewhat in this thread here...

http://forum.daz3d.com/viewtopic.php?t=185825&start=0
04.11.2012 17:17 Offline davidbrinnen mail at davidbrinnen.co.uk http://www.davidbrinnen.com
slepalex
Member

Join Date: 10.15.2010
Comments: 881
-

Thank you, David. I have read posts on the forum. However, they do not answer my question.
I need to pave the way around the mountain. It is elementary in 2D editor using layers and masks. At the same time I did not edit the other parts of the area, except for the road. But I can't save in the necessary quality a map of heights in any format (tiff, bmp, etc.). Photo Paint does not understand the format of PGM. Already at occupancy in 2D the editor (through Irfan View) the map of heights has lost the properties. It does not help to convert to grayscale 16 bit.

By the way, the mountain of the foreground is loaded into TE without editing (file-import object) as *. PGM. As you can see, it has ideal geometry. Mountains of a background were edited in TE. But also editing in the 2d editor doesn't rescue a situation.
04.11.2012 20:22 Offline slepalex slepalex at yandex.ru
davidbrinnen
Admin

Join Date: 01.03.2004
Comments: 2224
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If you can try Adobe Photoshop - it "claims" to read PGM and it also supports appropriate export formats (tiff 16 bit greyscale). Of course in this nothing is certain.
04.11.2012 20:48 Offline davidbrinnen mail at davidbrinnen.co.uk http://www.davidbrinnen.com
Horo
Admin

Join Date: 05.26.2004
Comments: 4721
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Adobe Photoshop does support pgm (which I don't use) and 16-bit greyscale tiffs. There is a difference between 16-bit (colour) tiffs and greyscales.

This is a very nice mountain-scape, Alex.
04.20.2012 07:41 Offline Horo h.-r.h.wernli at bluewin.ch https://www.horo.ch/


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