Category Archives: open cv

Making A Birthday Party Magical With Smart Wands

Visitors to the Wizarding World of Harry Potter at Universal Studios are able to cast “spells” by waving special interactive wands in the air. Hackers like us understand that there must be some unknown machinations happening behind the scenes to detect how the wands are moving, but for the kids …read more

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Posted in hardware, home automation, ir camera, magic wand, NoIR, open cv, Raspberry Pi, Raspberry Pi Zero, reflector, toy hacks | Leave a comment

Bot Makes Etch A Sketch Art In One Continuous Line

Introduced in 1960 for the princely sum of $2.99 ($25.00 today), Etch A Sketch was to become a standard issue item for the Baby Boomers’ toy box. As enchanting as the toy seems, it’s hard to see why it had staying power: it was hard for young fingers to twirl the knobs, diagonal lines and smooth curves required a concert pianist’s fine motor control, and whatever drawings we managed to make were erased at the slightest jostle of the tablet.

Intent on righting these wrongs, [Sunny Balasubramanian] not only motorized an Etch A Sketch, but he’s also given it a …read more

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Posted in Canny, edge detection, etch a sketch, open cv, plotter, Raspberry Pi, stepper, toy hacks, X-Y | Leave a comment

Object Detection, With TensorFlow

Getting computers to recognize objects has been a historically difficult problem in computer science, but with the rise of machine learning it is becoming easier to solve. One of the tools that can be put to work in object recognition is an open source library called TensorFlow, which [Evan] aka [Edje Electronics] has put to work for exactly this purpose.

His object recognition software runs on a Raspberry Pi equipped with a webcam, and also makes use of Open CV. [Evan] notes that this opens up a lot of creative low-cost detection applications for the Pi, such as setting up …read more

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Posted in computer vision, detection, Object, open cv, protobuf, python, Raspberry Pi, tensorflow, video hacks | Leave a comment