Category Archives: video camera

Tracking Drone Flight Path Via Video, Using Cameras We Can Get

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Calculating three-dimensional position from two-dimensional projections are literal textbook examples in geometry, but those examples are the “assume a spherical cow” type of simplifications. Applicable only in an ideal world where the projections are made with mathematically perfect cameras at precisely known locations with infinite resolution. Making things work in …read more

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A More Open Raspbrry Pi Camera Stack With libcamera

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As open as the Raspberry Pi Foundation has been about their beloved products, they would be the first to admit there’s always more work to be done: Getting a Pi up and running still requires many closed proprietary components. But the foundation works to chip away at it bit by …read more

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Air Knife Keeps GoPro Lens Clean In Messy Environments

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Before the GoPro, shooting video of messy, fast-paced, or dangerous things was very different. There were commercial sports camera rigs and various industrial solutions, but the GoPro, with its waterproof housings and diminutive size, was the revolutionary, stick-it-anywhere camera. Despite this, the team at [tarkka] were having issues with the lens getting covered in coolant while shooting videos of their CNC machining projects. To solve this, they created an air knife to clean the lens.

The air knife consists of a wide, flat nozzle that is designed to blow fluid off of the lens. It’s a tidy 3D printed design, …read more

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Real-Time Polarimetric Imager from 1980s Tech

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It’s easy to dismiss decades old electronics as effectively e-waste. With the rapid advancements and plummeting prices of modern technology, most old hardware is little more than a historical curiosity at this point. For example, why would anyone purchase something as esoteric as 1980-era video production equipment in 2018? A cheap burner phone could take better images, and if you’re looking to get video in your projects you’d be better off getting a webcam or a Raspberry Pi camera module.

But occasionally the old ways of doing things offer possibilities that modern methods don’t. This fascinating white paper from [David …read more

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