I've been using homemade targets on a VERY large construction project ($1.4B, 1.5+M SF) quite successfully. Seems to make logical sense but someone else might be able to chime in whether this is true or not. There was a thread last year about how this type of positioning helps the software detect the target center better, since the laser travels up and down when it acquires data so you capture more transition points between B&W areas. How are you mounting the B&W targets in the field? I've seen more success with the targets angled at a 45 so the B&W areas make an X pattern vs positioning them straight up and down. I really don't think there's anything special about the geometry of the target itself, but rather it's materials of construction and your workflow when using targets. I just wanted to chime in and say others are trying the same thing and can get targets detected by making their own. Where you could get around this is probably your choice of paper and method for printing the targets. Where the paper targets were limited was with acquiring points in non-perpendicular planes to the scanner position, it seemed that the printed targets were too shiny on standard office paper and didn't reflect light back to the scanner as well as other targets. I was at a customer's site recently who drew their own 4" B&W targets in CAD and printed them as a way of getting around having to purchase targets, and they were seeing success. Have you guys made any homemade targets? What materials did you use, and how successful were they? Please post pictures as well, I'm really curious to see how different everybody's look! We have also been attempting to fabricate our own spherical targets for some time now, and have had zero luck in getting Register 360 to recognize them. Is this just a case of our homemade ones not being "good enough"? The prices that these manufacturers charge for 2D targets is outrageous, and I have yet to find any evidence that the materials/process they use to make them will make them anymore successful than the ones we fabricated in our shop. Register 360 simply doesn't want to pick up these targets, or if it does, it doesn't pick the correct center. We have a series of homemade 2D targets (paper adhered to 6"圆" steel squares), and while they work great in some cases, they are practically useless in others. Registering scans with targets simplifies the workflow, and makes my scans accurate as ever.if Register 360 even picks them up. I have now been scanning with the BLK360 for about 8 months now, and have learned a lot along the way.
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