[Poser, Blender, Octane] Simply about UV mapping

...or just "Making of" >>  fav.me/d85yelq <<  

This tutorial demonstrates simple but useful scenario of UV-mapping using Blender for Poser/Octane users. Basic knowledge of Blender is highly recommended.

It often happens that 3D model you want to use in scene lack proper UV mapping on important parts. For example, Sports Car  www.renderosity.com/mod/freest… by web_wizard www.renderosity.com/mod/freest… (see image #1)
This is awesome 3D model, but placing complex image on its hood, for example, isn't possible, due to bad UV mapping. (see image #2). (Texture is '1 Large Orange Monarch' from this set www.renderosity.com/mod/freest… )

Let's try to improve this using Blender
 - Export car figure from Poser scene to OBJ file
 - Run Blender, choose in main menu File - Import - Wavefront (.obj) - Select .obj file - Import OBJ button
 - Select car body (named 'main'), switch to Edit mode (Tab key), Face select mode, deselect all (A key) (see image #3)
 - Carefully select all desired faces for UV mapping (the most tediuos part of work). Switch to wireframe display mode (Z key), if necessary. (see image #4)
 - Add new materail slot and assign this material to selected faces for future reference (selecting faces with this material)
 - Switch to UV/Image editor mode, enjoy perfect mess of UV-vertices instead of accurate mapping
 - Switch back to 3D view, open Unwrap menu at Mesh Tools - UV Mapping, choose Unwrap
 - Switch again to UV/Image editor, select all UV-vertices (A key), rotate (R Z keys), scale (S) and move (G) them as needed. Final result looks like on image #5.
 - Switch back to 3D view, set desired smoothing for faces.
 - Switch to Object mode (Tab key), export car model to OBJ file.
 - Add this new mesh to Octane scene, adjust texture scale to fit desired image. (see image #2, #6)
Note: it's possible to perform full and accurate UV-mapping in Blender, and these adjustments will not required. But it's more complex and time-consuming work.
 - You can also import new mesh back in Poser and see, how texture is placed now (see image #7 - comparing source and new mesh).
Note: I prefer to compose scene from several OBJ meshes directly in Octane, using 'Group' and 'Placement' nodes.