{"assets":[{"original":"http:\/\/www.ludumdare.com\/compo\/wp-content\/uploads\/2014\/05\/12-550x309.jpg","local":"\/data\/posts\/2014\/05\/55255ea5dc311120ea6a107e2a698c79.jpg"},{"original":"http:\/\/www.ludumdare.com\/compo\/wp-content\/uploads\/2014\/05\/21-550x309.jpg","local":"\/data\/posts\/2014\/05\/3407792aeb06ae666bec05a42185888d.jpg"},{"original":"http:\/\/www.ludumdare.com\/compo\/wp-content\/uploads\/2014\/05\/31-550x309.jpg","local":"\/data\/posts\/2014\/05\/10342fbd599683b53ba9e8abb781f819.jpg"}],"author_link":"author\/teamflare\/","author_name":"RevelBase","cat":"LD #29","categories":["LD #29"],"comments":[],"epoch":1400173860,"event":"LD29","likes":7,"metadata":{"p_key":"82200","p_author":"RevelBase","p_authorkey":"0","p_urlkey":"292932","p_title":"Scanning the Blackwald Forest, Part 2","p_cat":"LD #29","p_event":"LD29","p_time":"1400173860","p_likes":"7","p_comments":"0","p_status":"WAYBACK","us_key":null,"us_name":null,"us_username":null,"event_start":"1398384000","event_key":"22","event_name":"LD29"},"source_url":"2014\/05\/15\/scanning-the-blackwald-forest-part-2\/","text":"
\n

3D Scanned mesh to game ready asset in a few minutes :<\/p>\n

Scanning the Blackwald Forest<\/p>\n

\u00a0\nThis is part two of our 3D Scanning Postmortem.<\/p><\/div>\n

Read part one here.<\/a><\/strong><\/div>\n
( or play our game )<\/a>\n

What you get out of the 3D scan is a very high density triangulated mesh, that is uv mapped using a very large atlas texture.<\/p>\n

What we want is a low poly object, 3k polys max, with a nice uv map, as well as a clean high poly we can use for the bake.<\/p>\n

And we want that fast \":)\"<\/p>\n\n

Cleaning up the scan :<\/p>\n

This is what it looks like when imported into zBrush. As you notice, there are some parts flying around, and the scan has a hole in the top.<\/p>\n

We\u2019re going to fix that now.<\/p>\n

\"1\"<\/a><\/p>\n

First we\u00a0applied the bitmap texture and deleted the useless parts by splitting the mesh into subtools.<\/p>\n

Then we subdivided the mesh a couple of times, for converting the bitmap texture into a polypaint(vertex map) texture.<\/p>\n

\"2\"<\/a><\/p>\n

Retopology and fixing texture errors :<\/p>\n

We\u00a0ran a zRemesh over the scan. This converts the scan into a mesh with better ( all quad ) topology.<\/p>\n

It won\u2019t conform entirely to the scan, and will also lose the vertex colors. But we can project that back from the original scan.<\/p>\n

Before we do that, now is the time to close the holes in the mesh.<\/p>\n

Remeshed with zRemesher :<\/p>\n

\"3\"<\/a><\/p><\/div>\n

<\/div>\n
Projected the polypaint from the scan to the new cleaner scan :<\/div>\n
\"4\"<\/a>\n

Converting the cleaned mesh into lowpoly :<\/p>\n

We duplicated the cleaned mesh, and ran a decimation over it, and brought it down to roughly 1k polys.<\/p>\n

After that, we did an automated unwrapping. This works very fine in zBrush. It won\u2019t fill the uv space optimal, but it has little to no seams.<\/p>\n<\/div>\n

<\/div>\n
Reduced to 1k polys using decimationMaster :\n\"6\"<\/a><\/div>\n
<\/div>\n
<\/div>\n
UVs with zBrush uvMaster :<\/div>\n
\"5\"<\/a>\nBaking the texture with Substance Designer :\n

Substance is amazing when you need to batch through a couple of similar objects. It\u2019s like a node based photoshop that also has every texture baking option available you could think of \":)\"<\/p>\n

We\u00a0did the node graph once, and then used that as a preset for all objects. It also takes care of downsizing the textures.\nWhat we\u00a0baked :<\/p>\n