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More Answers From Steve Varga
What would be a cost-effective setup to sense a soccer ball's accuracy and speed? We are building a soccer simulation lab in Northern VA and would like to speak with someone about this engineering challenge as we fit the facility.
Isaiah, Accuracy of a shot to a target such as a bulls-eye target? Accuracy of a pass during open play? Speed of the ball during open play or speed of a single shot? Speed may be much more cost effective on its own using microphones instead of vision. 1 mic near the shooter to detect the moment of the kick and another mic at the target to detect the time of contact then simply rate = distance / time between the two sound events. Systems to measure accuracy would depend on what you envision the output to look like. Are you thinking a raw score like 94% for attempting to hit a fixed target or something more like a scatter plot showing the reproducibility of a shooting or passing distribution? If you have a fast enough vision system to track the path of the shot then you may be able to get rid of the microphones and get speed off the same system that tracks accuracy. It all depends on what you want the output to look like.
Hi, I need two cameras at least 80fps with high light sensitivity. The cameras will be used to capture and stream live video of a students golf swing. Any suggestions? Where should I begin?
Rental cameras from Olympus would be a good place to start instead of buying a camera. For golf swings you likely need 500 to 1000 fps. Here's a link showing 500 fps golf swings for reference. https://www.youtube.com/watch?v=_506Kj1eT18
I am looking for an inexpensive system that I can use to measure and do capability studies on printed parts. We have two needs: 1) Occasionally measure a single part quickly. By measure I mean to measure the distance between two lines or edges. 2) Do capability studies on a production process that is aimed at finding the causes of variation between two lines on a printed part. This would entail measuring up to about 30 parts at up to about 16 places. This would be occasional use so an inexpensive starter system would be ideal.
If you need something for lab studies (supervised and non-industrial) and you can use a laptop or PC then just use a webcam and ImageJ. If you need something unsupervised and industrial then consider an low-end smart-camera ($1800 to $3200) such as: National Instruments http://sine.ni.com/nips/cds/view/p/lang/en/nid/211078 or MicroScan http://www.microscan.com/en-us/Products/Machine-Vision-Systems/Vision-MINI-Smart-Camera.aspx or Cognex http://www.cognex.com/products/machine-vision/in-sight-7000-series-integrated-vision-systems/?id=13608&langtype=1033 or many others...