2
$\begingroup$

I'm using Blenders plane track feature to replace a sign with an image sequence.

Now I want to add a little bit of realism to the scene so I 3D tracked it too and added a ground plane to catch the reflections of the screen. Of course I want the reflections to blend in better.

I'd like to use the ground of the background image sequence as a specular map. The asphalt is showing through and those parts should not be as reflective as the snow.

Is there some smart way to project the ground part of the background on to the plane?

Reflective snow

Here's the background and the replaced sign I want to shine somewhat on to the snow.

Background

$\endgroup$
2
  • $\begingroup$ What render engine are you using? It looks like cycles to me. If this is the case try increasing the rough value of your shader. Otherwise consider using the displacement modifier to break the surface up a little. $\endgroup$
    – Rick Riggs
    Mar 16, 2016 at 8:22
  • $\begingroup$ You're correct, it's cycles. Good suggestion but I want even more realism. I'll add another image to clarify. $\endgroup$
    – Funkaloss
    Mar 16, 2016 at 8:27

1 Answer 1

1
$\begingroup$

Within Blender you can create a mask in the Image Editor, and then go into the compositor To Get This less saturated and rendered out with the Mask applied, then saved out as a Specular Map for this reason. I will play around with it, and append this answer with some screenshots/blend files/step-by-step instructions/etc...

Before I go much further, is this what you are asking for?:

enter image description here

enter image description here

enter image description here

enter image description here

enter image description here

$\endgroup$
1
  • $\begingroup$ Thank you and sorry for the late reply. With your help I solved it. I made a specular map version of the image sequence and mapped using the camera texture coordinates. Then I used a feathered mask to mask out the sign and blend in the glossiness. $\endgroup$
    – Funkaloss
    Apr 1, 2016 at 19:52

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .