3D Scanning with Kinect v2

Posts by Jacob

3D scan of full body

3D scan of full body

By on Nov 9, 2015 in Uncategorized | 0 comments

For our next adventure, we will be working on merging multiple 3d scans into a full body model. When we are done we will upload a video like the others. Alignment Tips Keep in mind that if you keep aligning scans wrong then by the time you finish you may have extra features or missing features. After a quick rush through, the only flaw in the scan was double elbows. Extra features mean that 2 scans weren’t properly aligned before creating the final mesh, same thing happens for missing features or thin arms. This did happen with the rush alignment, I just wanted to make sure there was enough model data to complete the final model, I was surprised that it turned out so well on the first try while being sloppy. So, pick points that are easily distinguishable and effect the final outcome of the render- it doesn’t have to be 100% accurate, just close enough so the fine-tune alignment can work. In the above image is circled in red areas that are easily distinguishable and effect the final mesh. Who knew those picture matching games would actually help out with real world work. Because the Kinect 2 distortion, more scans actually makes it more difficult to get an accurate alignment, the fewer scans the easier the alignment process will go – it’s a balance between capturing enough data to get the 3d model, but not too much data that it’s hard to align properly. Another Picture! Well, this next video will probably be a long one, getting a full model stitched together can be tricky. I’ve had to discard several captures as too many captures was making things...

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3D scan of shoulders and head

3D scan of shoulders and head

By on Nov 5, 2015 in Uncategorized | 0 comments

While getting the scans merged together for a head/shoulder scan, we’ve found a couple problems that will need to be worked around. Hair scans poorly While aligning two scans we noticed that the hair was not lining up, and that it actually couldn’t line up correctly because it became deformed -depending the angle scanned. The solution is simple, certain angles will give lower quality scan data, the scan with less surface area and would contribute less to the model seems to be the bad data. Trimming the false hair would improve the quality of scan without losing any data (the complete area of hair shows up on the good scan). Fewer features to map the back with While trying to attach the back together, it’s considerably more difficult to attach the back together. The front has very distinguishable marks between scans (nose, chin, eyebrows) – where the back has shirt wrinkles, general spots on shoulders. We will be digging into this more to try to find the best approach to aligning the back. It looks like it will involve first aligning the front of the scan, and then attaching the back to it. Initial Results We were able to overcome the initial obstacles and will be working on the video today....

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3D Scanning a Face

3D Scanning a Face

By on Nov 4, 2015 in Uncategorized | 0 comments

Goals What I consider a good facial scan is: You can tell who it is – enough features to distinguish between different people. The nose looks right. The shape of the head is correct. There are no extra features added like double cheek bones. This is just for the face, between ears, chin and forehead. Initial findings The Kinect V2 cannot scan closer than 50cm, so trying to get the face the cover the majority of the scan area is impossible; this also works out well because the edges of the scan area are not good to work with anyways. The side facing towards the scanner is good, but the side of the face that is angled away from the scanner will be lower quality data, I think I will have to trim it out to get a good scan/alignment. When scanning, quality is related to holding still and the distance of the scan. The closer you are, the more detail there will be- but the further away, the less movement will interfere with the scan. How to get good quality alignment on faces Get 3 good Scans: Front, left and right side at (45 degree angle). Pick easy alignment points; Between the eyebrows, tip of the nose, under the bottom lip, check bones. Conduct the alignment process and convert into a printable mesh: Here is a video with the process...

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