![]() When insight 3D works well, it makes a nice point cloud. You’ll save yourslef lots of vexation if you do that… If you’re fooling with point clouds, take the time and get to know CloudCompare well. More photos on the specific area of interest mean greater detail in the point cloud in that area….Use the targets to set your scale and then you can align the points in, say Cloud Compare or Meshlab. ![]() One of the ways around the detail issue is to use some targets as ground control points for the areas you want to focus on.and then do two captures…one of the larger area, and another one only on the specific area you’re interested in. They’ve replaced it with ReMake, which has a montly pricing structure similar to Pix4D’s drone package There’s a 250 photo limit now, so you can capture reallly good detail. the 70 photo limit meant you had to really plan your capture and it made it hard to use for large scenes. I’ve even started HDRing all of the photos I use for generating point clouds, regardless of whether or not it was overcast when I captured the images and I’ve found it helps.Ĭatch123’s been phased out, but it actualy did a great job for shiny objects like cars, for instance. I’ve done batch HDRs on the overcast photo sets and then re-run them and it improves the detail and reduces the noise. It took several days to process the scenes with VisualSFM, and 15-18 hours to process them with Pix4D. I used the same photos sets with VisualSFM and got the same sort of noise, so the takeway there is to avoid overcast days when you’re capturing an outdoor scene. It puts a lot of noise in the scenes that you can filter out and remove manually with Cloud Compare. The only problem I had was both were shot on overcast days, and the software has trouble with gray sky. I shot about 1200 images for each one and I surveyed a few points to use to set the scale. I used the full version to do an interstate higway interchange and an industrial accident scene. I’ve used it with terrestrial images and the results have been pretty cool and pretty detailed. Pix4D has a new monthly pay option for Drone captures that’s pretty affordable. Posted in 3d Printer hacks, digital cameras hacks Tagged 3d scanning, Agisoft PhotoScan, Autodesk 123D, Memento, Photogrammetry, Sebastion Setz Post navigation After all this work it appears that used his new powers to 3d print a giant decking screw. ![]() uses Agisoft Photoscan, but says Autodesk Memento and 123d Catch do pretty well too. Once the photos have been taken, they need to be run through a photogrammetry processor. This process repeats until multiple photos of the object have been taken. The Arduino rotates the platform a measured increment, and then using ’s very neat IR camera control library, snaps a photo. In order to precisely index the object, he built an indexing set-up with an Arduino and a stepper motor (housed in the, self proclaimed, most elegant of 3d printed enclosures). To get even lighting he used four adjustable LED lamps from Ikea. The background was handled by a 3d printed stand and some copier paper. A good set of images for photogrammetry are: in sharp focus, well lit, precisely indexed, and have a uniform background. ![]() Photogrammetry is a real word, and built himself a nice setup to take high-res 3d scans using it.
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