The problem of curvature map

yet

User Posts: 3
Jul 27, 2024 04:34

The curvature map cannot adjust the contrast, whether using gradient nodes or color correction nodes. Moreover, the curvature map shows a significant difference from the original image after inverting.

Kirgman

Administrator Posts: 915
Jul 27, 2024 08:27

Hi, yet!
The Curvature node depends on ray tracing sampling around the hit point. The parameter Softness has influence on whether you can modify the output of the Curvature using the Color Correction or Gradient. Please see example here
https://centileo.com/docs/index.php?COURSE_ID=3&LESSON_ID=105&LESSON_PATH=17.69.105

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yet

User Posts: 3
Jul 28, 2024 01:18

Hi, Kirgman
I want to use a few images to illustrate my problem:
1. The model has two different angles;
2. The white part of the "curvature map" cannot be adjusted to pure white;
3. If "invert" is checked, the black part almost disappears;
4, 5, 6. Using the nodes "correction," "gradient," and "remap," I cannot adjust the values of the white part to 1.
In summary, I want to achieve perfect "black" and "white." Is there any way to do this?

Attached Files

fe1_-_3_.png (6.54 Kb)

Kirgman

Administrator Posts: 915
Jul 28, 2024 13:14

Please, can you share this file with me so I will try to play with settings? Probably we need to crank Softness/Sensitivity/Power to max values and also increase the the Distance Scale a lot. And then we probably have more control using the Gradient.

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yet User Posts: 3 Jul 29, 2024 03:14 #5 This is just a simple model, and in addition, the effect of this image is what I wanted; it was created using the Arnold renderer. Attached Files tt.c4d (217.84 Kb)

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