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Sweet Home 3D フォーラム

Sweet Home 3D

カテゴリ: Help

フォーラム: 3D problems

スレッド: massive color-difference

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このスレッドの投稿数: 31

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このトピックの表示は 26093 回で 30 通の返信があります。

Mike53
Advanced Member

UK
登録日: 2018/01/06
Post Count: 678
状態: オフライン


Re: massive color-difference

Not so sure this is a new topic, i seem to recall questioning it a couple of years ago, i have found that using textures is far more accurate than colors, here are 2 images, 1 a screenshot the other a render.

and this is a Q4 render

not only does the red change to pink but it also shows how different objects color differently, the I beams are rooms and the roller support brackets are box's, both have the same color applied to them.
Mike

[2018/11/16 22:49:44]

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hal9000
Advanced Member

Spain
登録日: 2012/05/09
Post Count: 154
状態: オフライン


Re: massive color-difference

Well, more than 1 year after the last post, but... Has somebody tried to render one of these projects with YafaRay to see if the color difference between a pure color and a texture of the same color is still there?
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If a long walk every day were healthy, mailmen would be immortal. tongue

[2019/12/06 20:05:17]

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UbuntuBirdy
Advanced Member

Switzerland
登録日: 2017/08/31
Post Count: 421
状態: オフライン


Re: massive color-difference

Interesting idea. Yes, I have, but unfortunately I have changed all my projects from colored to textured objects.
But I will this give a try.
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Pascal

SH3D 6.6 / Ubuntu 22.04 (Mainline-Kernel) / Radeon RX580 / Ryzen 7 5800x

[2019/12/07 11:26:30]

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enkonyito
Advanced Member

登録日: 2015/05/28
Post Count: 607
状態: オフライン


Re: massive color-difference

@UbuntuBirdy

This picture shows what's wrong in my opinion:

- The left cube has a texture which is only colored as #520015
- The right cube has the color #520015 directly

In my opinion both cubes should look the same, we should see exactly the same color. But only the textured cube shows the color #520015 as it should be.

I think the difference comes from the way Java 3D processes colors or textures.

Example of rendering in quality 1.

Enko
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EnkoNyito

[2019/12/13 2:28:20]

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Mike53
Advanced Member

UK
登録日: 2018/01/06
Post Count: 678
状態: オフライン


Re: massive color-difference

Not sure if this issue has been attended to but i am still getting the same issue

Roof with colour:-

Roof with texture:-

[2021/02/21 11:24:25]

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hansmex
Advanced Member

Netherlands
登録日: 2009/09/26
Post Count: 4014
状態: オフライン


Re: massive color-difference

This is a known "problem". Using an even-coloured texture is the solution, as you already found out.

H
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Hans

new website - under constuction
hansdirkse.info

[2021/02/21 11:40:35]

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Mike53
Advanced Member

UK
登録日: 2018/01/06
Post Count: 678
状態: オフライン


Re: massive color-difference

Just because it is something that is a "KNOWN PROBLEM" shouldn't mean we have to continue with "work arounds" rather than sorting the issues.
As a maintenance engineer i quite often use "work arounds" when needed to get a machine running, but, these are temporary, I return as soon as possible to properly make repair.

[2021/02/21 13:16:11]

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reddy.shyam
Member

登録日: 2021/02/09
Post Count: 28
状態: オフライン


Re: massive color-difference

While we are at it, is my issue same as well? All my bright colors become pale when I generate an image. Please see attached.

Any setting I need to change while generating image?

Cannot attach any image host files for some reason. Tried imgur and prnt.sc`

[2021/02/26 6:47:43]

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kutlu9
Newbie

登録日: 2021/03/14
Post Count: 7
状態: オフライン


Re: massive color-difference

I'm having same problem as reddy.shyam. I was using the programm without any problems, suddenly my images become over exposed. Uninstall/reinstall didn't solved it.

I noticed sky texture or color doesn't render (rendering with only pure white color) making final image over exposed.

[2021/03/14 8:20:22]

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c0d3z3r0
Newbie

登録日: 2024/12/18
Post Count: 8
状態: オフライン


Re: massive color-difference

The problem seems to be that Java3D expects Linear RGB as input color space:https://forum.jogamp.org/sRGB-and-gamma-correction-in-Java3d-td4038946.html

I've tested this by manually setting the RGB value of a wall to a gamma-corrected value ( lin=255*(val/255, 2.2) ), which makes yafaray and sunflow output the correct color.

There are two options: 1) feed in a generated texture or 2) convert the colors to linear RGB

[2024/12/27 20:40:17]

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