5 ms·
Couldn't they use a machine like a coin counter?
by choeger 5y ago
Couldn't they use a machine like a coin counter?
- amilios 5y agoprobably more difficult because of the irregular sizes of the pearls.
- sellyme 5y agoPearls are going to be far less uniform than coins, a software solution is likely going to have better accuracy.
- TeMPOraL 5y agoThis scales better. Also, going by the pictures in the article, the pearls are of varying sizes, so making a machine to count them would be a tad more tricky. When you're counting things of uniform size and density (like screws or coins, one type at a time), the usual trick is to weigh them all, then weigh a single one, then divide the two numbers.
- nly 5y agoI'm no expert, but I believe Pearl is quite easy to scuff/scratch.
- cesis 5y agoThere exists an entire industry for counting and sorting things(e.g. optical bean sorting). There also are rather cheap optical tachometers(measuring rotations by applying reflective tape on rotating surface). I would guess such devices could also be tailored for counting falling objects. And also there are multiple old- school tricks for similar tasks. E.g. if you need to count nails, weight them all, then weight a single nail, then divide the weights to get count.
- Nition 5y agoPearls come in all different sizes.
- drran 5y agoYes.
- Too 5y agoThe new camera approach obviously is a lot more accurate, powerful and simple now once you have it. But totally agree looking at their previous solution it feels extremely primitive. There surely must have been a simple middle ground without the app, using a mechanical funnel, a wheel or one-dimensional photosensor to count these. Even if they are different sizes and not always exactly round, the shape and size is still rather uniform.