Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. On most autumn days, David Sopjes can be found in the Eel River in ...

Is it possible to count objects you can't see? If you've ever received a boxed gift, or a mysterious package from Amazon, you might have tried to lightly shake the box to try to guess its contents.

In modern industrial production lines, rapid and accurate size monitoring and quantity counting of small particles or components has always been a crucial aspect of enhancing quality control ...

A red knot is a tiny shorebird that makes an epic 9000-mile journey all the way from the arctic to the tip of southern Chile and back. Biologists and nature enthusiasts congregate at various points ...

Infants and animals are able to understand approximate quantities of different types, in terms of relative proportions of the numbers of different sets of objects, provided the difference in numbers ...

Psychologists have found that use of certain objects for counting have mixed results with preschoolers, particularly if those objects are rich in perceptual detail (bright and shiny). Concrete objects ...

Are there any freely-available tools to count how many moving objects are in a video clip? That's a 5-second sample, and I can make a clip of any length, but in this particular case I'm not concerned ...