Timeline for Is diffuse reflection definition failed when we see both reflection(diffuse,specular) is happening on one single object?
Current License: CC BY-SA 4.0
17 events
| when toggle format | what | by | license | comment | |
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| Dec 30, 2021 at 15:37 | comment | added | S. M. | Let us continue this discussion in chat. | |
| Dec 30, 2021 at 15:33 | comment | added | Theraot | @Ponting Yes. Independent of the direction of view. The intensity of the diffuse reflection is different at different points according to the angle between the direction of incident and light and the normal of the surface at the point. | |
| Dec 30, 2021 at 15:25 | comment | added | S. M. | @Theraot "the angle between the normal and the direction of incident light is different for different points. "--- since different points has different angle so different points has different intensity? | |
| Dec 30, 2021 at 15:13 | comment | added | Theraot | @Ponting That is not about moving the camera, nor about spectacular reflection. Different points on the surface have different normals. Even if the direction of incident light is the same, since different points on the surface have different normals, the angle between the normal and the direction of incident light is different for different points. | |
| Dec 30, 2021 at 14:20 | comment | added | S. M. | @Theraot "The angle between the incident light and the normal is different. Even if the incident light comes form the same direction "---you mean when we see specular intensity at point x1 from particular camera position. But when move camera and see specular intensity at point x2 from particular camera position. Now intensity of x1 is not equal to x2 because at x1 and x2 normal is different and incident angle between normals at x1 and x2 is different. Am I correct? | |
| Dec 30, 2021 at 13:57 | comment | added | S. M. | @Theraot you should insert your last comments in answer. | |
| Dec 30, 2021 at 13:45 | comment | added | Theraot | @Ponting For a given point, the intensity of the diffuse reflection is the same regardless of the viewing direction. But - for the same point - the intensity of the specular reflection changes as the viewing direction changes. So, from some viewing directions the specular reflection - for that same point - is greater than the diffuse reflection; and from some other viewing direction the specular reflection - for that same point - is lesser than the diffuse reflection. The light we see from that same point is a combination of those two (and any other components). | |
| Dec 30, 2021 at 13:45 | comment | added | DMGregory♦ | The diffuse intensity does not change when moving the camera. The specular reflection gets added on top, but it does not remove the diffuse reflection underneath. "Diffuse becomes specular" is the wrong way to think about what's happening, because the diffuse reflection is still present in that spot, unchanged. | |
| Dec 30, 2021 at 13:40 | history | edited | Theraot | CC BY-SA 4.0 | added 1315 characters in body |
| Dec 30, 2021 at 13:39 | comment | added | S. M. | (continue) so how the diffuse reflection definition isn't violating? | |
| Dec 30, 2021 at 13:28 | comment | added | S. M. | in your answer everything looks good. But one thing doesn't clarified, when diffuse reflection is happening, it's intensity same from all viewing direction, but when camera is moving how diffuse portion (previously said) intensity changing?? What is the logic behind this. | |
| Dec 30, 2021 at 13:13 | history | edited | Theraot | CC BY-SA 4.0 | added 103 characters in body |
| Dec 30, 2021 at 13:01 | history | edited | Theraot | CC BY-SA 4.0 | added 103 characters in body |
| Dec 30, 2021 at 12:24 | comment | added | S. M. | "But it does not account for how its contributions is combined with the others "---- what do you mean? | |
| Dec 30, 2021 at 11:14 | vote | accept | S. M. | ||
| Dec 30, 2021 at 10:39 | comment | added | S. M. | when move the camera then specular portion becomes diffuse and diffuse portion becomes specular, so how can we say diffuse is independent of camera? | |
| Dec 29, 2021 at 22:05 | history | answered | Theraot | CC BY-SA 4.0 |