Join Mark Lefitz for an in-depth discussion in this video Fixing the road, part of Photorealistic Lighting with Maya and Nuke (2012).
Next, we have to make some paint fixes to the road. Painting out the lane line will eliminate any problems that the car is actually driving on the wrong side of the road, at least here in the US. We can also tighten up the ground shadow a bit as well. Let's start by selecting our Background layer. Let's make a copy of that, and double-click in the layer, and let's call it roadFix. Now let's select our Polygonal Lasso tool right here, and what we want to do is make a very tight selection around that lane line.
So zooming in on it here, let's start on the outside of the image, and let's just start creating a selection around it. So we can just pan down the image, and we are going to go outside the image, and then back around again. So now we are just going to backtrack here. Now we are going to complete the selection, and zoom out a little bit. Now, under Edit > Fill, we are going to make sure that our Use is set to Content-Aware, and Content-Aware simply takes pixels from outside the selection, and includes them in the new selection.
So, we are going to say OK. Now let's do a Ctrl+D to deselect, and our lane line is gone, but as you can see, there are still some remnants of it. We have got to go in and make some painting adjustments in order to clean that up. Probably the best way to do that is we are going to use our Clone Stamp tool. We set our brush to Opacity of about 100%, our Flow to around 25 or so, and our Brush Size to 15.
Of course, feel free to adjust any of those parameters. I am going to use my Alt key just to select next to the area I want to paint, and I'm going to start filling in the area that needs some adjustment. I am just going to be very careful not to paint onto the car, and also careful not to paint any of our valuable ground shadow pass, or ground occlusion pass. Let's change our Opacity a little bit, bring that down, and adjust the ground shadow here, so it's just not so stark of an edge. There we go; looks pretty good. And zoom out.
I don't want to have two background layers, so we need to merge the two together, and create a new background layer. So in the Layers palette, we're just going to merge down, and now we have our new Background layer. So, let's continue adjusting our image, and add a vignette.
- Understanding image-based lighting
- Analyzing and color correcting the background plate
- Creating a 3D camera to match the plate
- Lighting with low-quality settings and proxies
- Setting light samples
- Setting up render passes
- Rendering mattes ground shadow, and occlusions passes
- Adding gamma correction in Nuke
- Adding the object to the plate and rendering the final composite
- Retouching the composite using Photoshop