Using the features from the Vector Graphics system you can project detail down onto your models.
This is particularly useful for users of the Prime, Broadcast and Visualize versions of C4D who do not have the Sculpting toolset, since this is an alternative to using the sculpting based Stencils for the brushes.
Using a Canvas you can position and either paint with a brush, or fully project, the texture onto your models.
Full documentation can be found here.
From a Canvas Objects viewport tab you can choose to display it directly in the viewport. Using the Simple Paint Brush you can then project the image directly onto any polygonal object.
Select a Polygonal Object
Open the Material View
The view will show all the materials for this object. If you don't have any them click Create Single Material to quickly add a material and Color Channel for painting.
Right Click on any of the materials in the Material View and select Paint All.
This will setup the materials so they are ready for painting.
Select the Paint Brush Standard tool.
Paint over the top of the Vector Image in the viewport to project paint down directly onto your model.
Alternatively if you wish to project the entire image then press the "Project Image" button found on the '4D Paint Split' Layout. This will project the entire image down onto your model.
When the image is being displayed in the Viewport you can also use all the drawing tools to draw directly onto the canvas from the Viewport itself. Allowing you to draw shapes and project in a quick workflow.
Octane Support for updating the Live View when painting.