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Re: Just How Important Are Specular Maps For Photo-Real Faces? Cameras, filters etc
To get specular only, you couldn't just use a polarizing filter, since roughly half of the diffuse would still contribute to the shot, right? In other words, you can't filter out all the diffuse with just a polarizer? -
Re: Just How Important Are Specular Maps For Photo-Real Faces? Cameras, filters etc
They're not important at all, infact, you could also not use diffuse, nor normals maps. Just create a bunch of vertices and stick them in you app of choice. Let the player use their imagination! OK, seriously EVERY model needs some sort of spec/gloss map setup, how else are you supposed to define a material? You can't… -
Re: Just How Important Are Specular Maps For Photo-Real Faces? Cameras, filters etc
Heya peeps, I was wondering if anyone knew the names of filters one would use to filter out your standard Spec/Diffuse/Cavity setup in the images one takes with a camera? I know that Polariztion Filters (Linear) is what you need to get a flat diffuse, and negate the Specular, but what would I need to do for the opposite,… -
Re: Just How Important Are Specular Maps For Photo-Real Faces? Cameras, filters etc
Here are a few quick, not-scientific-at-all examples of using a CPL(circular polarizer) filter to separate diffuse from specular. Its a bit hard to do this to myself, if you had another person you could do it quickly and then compare the results in photoshop using "difference" to sort of pull out the specular highlights -… -
Re: Just How Important Are Specular Maps For Photo-Real Faces? Cameras, filters etc
Just looked up the setup in nDo, didn't find anything about taking a diffuse directly and editing it. -
Re: Just How Important Are Specular Maps For Photo-Real Faces? Cameras, filters etc
Computron: He's filtering the specular highlighting off the skin, not filtering the diffuse away from the specular highlight. You can see its not perfect, but pretty darn good. :) -
Re: Just How Important Are Specular Maps For Photo-Real Faces? Cameras, filters etc
separating specular and diffuse components is a pretty old problem in machine vision, so there's actually a lot of research and data on it. One thing you realize fairly quickly is how little variation there is in the spec component of a lot of objects. Anyway, figured this might be relevant; taken from… -
Re: Just How Important Are Specular Maps For Photo-Real Faces? Cameras, filters etc
Wow amazing response to the question. EarthQuake, a massive thank you for your detailed explanation of how to understand the power of specular and how to seperate the specular from a diffuse with the use of a CPL. I'll definitely have to get my hands on one for my 550D. Also Equil's photo looks amazing! Thanks again for… -
Re: Just How Important Are Specular Maps For Photo-Real Faces? Cameras, filters etc
I can tell you from experience that once I started drawing diffuse sources from a site like 3D.SK, and then making speculars based of those high res maps, it made a world of difference. High resolution sources will really help you reach that quality you're looking for. EDIT: Is a linear or circular filter needed? I keep… -
Re: Just How Important Are Specular Maps For Photo-Real Faces? Cameras, filters etc
I can vouch that Crazybump does a killer job on killing everything and leaving you with a nice diffuse if you use it (not sure if nDo has that option). Pretty much the same stuff that Stradigos mentioned, only much more easier for the lazy in us. Also, don't forget to take pictures in RAW format, you will have extra access…
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