camera vs lidar

A clip from Tesla Autonomy Day 2019 where Elon Musk argues cameras are enough for self-driving and calls lidar a fool's errand.

Mark Rober tests whether self-driving cars can be fooled, comparing a lidar-equipped car with a camera-only Tesla in scenarios including a painted Wile E. Coyote wall and smoke.

Polylog explains how algorithms can be turned into circuits and encoded as satisfiability problems, which lets you effectively run them backwards. It uses this to motivate breaking RSA, general reductions to SAT, and what P vs NP is really asking.

A 1957 Walt Disney film in which he explains and demonstrates the multiplane camera, the animation tool that gave 2D films depth. It is a short behind-the-scenes piece from Disney's archives.

Benn Jordan concludes his Flock trilogy, filmed on a publicly deployed Flock Safety camera, covering a leak of camera feeds reported by 404 Media. He shows the cameras' capabilities, including panning to track people.

Craig Heffner's Black Hat 2013 talk on exploiting network surveillance cameras, covering how insecure their firmware is. It shows how easily such devices can be compromised.

A hobbyist builds a prototype full-frame CCD camera from scratch, with open-source design files and a custom PCB. The video shows the first, still rough prototype.

Lex Fridman's two-hour podcast with George Hotz, founder of Comma.ai, covering openpilot, autonomous driving and Hotz's views on AI and technology.

Andrei Tarkovsky's 1972 film Solaris, in which a psychologist is sent to a space station orbiting a planet with an alien intelligence and meets his dead wife there. It is the full movie, uploaded by Mosfilm.

A short clip parodying Windows Vista's cancel-or-allow security prompts, in the style of Apple's Mac vs PC ads.

An 11-minute animated introduction to P vs. NP and the wider landscape of complexity classes, inspired by the Complexity Zoo wiki. It assumes no background in computer science.

Benn Jordan details security vulnerabilities in Flock Safety license-plate-reading cameras and how easily they can be compromised. It includes citations from security researchers and discussion of police surveillance.

An overview of the PTVS 2.0 beta feature for debugging Python and C/C++ together in one session in Visual Studio.

Ben Felix explains how to decide between renting and buying a home, weighing financial and non-financial factors. He argues that renting is often as good or better than owning, both financially and for well-being.

LGR looks at the 1988 Canon Xap Shot, a still video camera that records photos to a floppy disk as analog NTSC signal rather than digital data.

Additional camera angles of the 1988 Sandia National Laboratories rocket-sled test in which an F-4 Phantom was crashed at about 500 mph into a block of reinforced concrete. The footage shows the aircraft disintegrating against the wall.

Technology Connections explains that the so-called EV charger in an electric car's charging cable or wall unit is really an EVSE, a smart switch that safely delivers AC power. The actual charger is inside the car. The video covers the safety signaling and mechanisms involved.

Thunderf00t presents high-speed camera footage of alkali metals such as sodium and NaK reacting with water. The footage shows that the explosion is not caused by hydrogen ignition, as the usual explanation says. It is a Coulomb explosion driven by electrons leaving the metal.

Red Bull and the Dutch Drone Gods follow Max Verstappen's RB20 F1 car around Silverstone in a single FPV shot using a custom drone that accelerates to 300 km/h in about four seconds. The video also covers the year of development behind the drone.

Ben Krasnow of Applied Science uses an antique 4x5 view camera to make high-resolution photolithography masks in a home shop. He photographs a poster-sized printout onto litho film to get features around 20 microns.

CBC Marketplace investigates locksmith scams in the Greater Toronto Area. It exposes networks of fake Google Maps listings and fake reviews, and uses hidden cameras to show how low quotes turn into overcharges.

EposVox reviews a very cheap USB 2.0 HDMI capture dongle sold under names like BlueAVS/Goodan, testing whether it works as an alternative to the Elgato Cam Link. He covers its quality and limits for webcam-style and camera capture use.

Smarter Every Day films a bullet hitting a Prince Rupert's drop with a high-speed camera at 150,000 fps. It shows how the glass drop's tough head and fragile tail behave on impact.

The UK DVSA's one-minute guide to the hazard perception part of the driving theory test, covering when to click and how to score well.

Phone footage of looting in the makeup aisle of a San Francisco CVS, with commentary that police did not show.

Epic Games shows how LED walls can provide both virtual backgrounds and real lighting, letting scenes be captured in camera in a single pass with Unreal Engine.

Johann Korndorfer's NVScene 2015 talk on building content with signed distance functions. It focuses on patterns that make SDF modelling more structured, arguing that SDFs capture a shape's essence like vector graphics do compared with polygons or voxels.

Mark Bastian contrasts top-down object-oriented design with bottom-up, data-oriented design in Clojure. He models a board game as plain data plus small composable functions and compares it with a roughly 22-class OOP version.

Not Just Bikes explains how SUVs and light trucks have grown in size and share of US sales, and why that is dangerous for pedestrians, cyclists and city life. He covers the regulatory loopholes, such as fuel economy rules and the chicken tax, that favored them.

A one-minute IIHS demonstration crash test of a 1959 Chevrolet Bel Air against a 2009 Chevrolet Malibu, showing how much better the modern car protects its occupants.

A hip-hop music video from EconStories in which Keynes and Hayek rap-battle over how to handle recessions and government spending. It is the second round after the first rap battle.

Ben Felix explains how to compare renting and buying a home by looking at unrecoverable costs, and distills it into the 5% rule of thumb. It is framed for a Canadian audience but broadly applicable.

A three-minute clip of Steve Jobs arguing that great products come from people who care about content rather than process. He says process-focused people take over and cause decline, citing IBM as an example.

Tom Scott makes the difference between a million and a billion dollars tangible by using distance on a road trip instead of volume. The drive makes the scale of a billion intuitively felt.

A short clip of Stephen Fry explaining the differences between American and British comedy. He attributes them to cultural attitudes such as optimism versus pessimism.

Gary Bernhardt argues that software history moves in reactions to earlier tools, and that new tools are not simply better in every way. He distinguishes capability (what a tool allows) from suitability (what it fits), and warns against repeating past mistaken reactions.

Gaming Historian recounts how Atari subsidiary Tengen challenged Nintendo's licensing rules with a lawsuit and unlicensed NES games, including the lockout chip fight.

A clip of Yanis Varoufakis answering a question about China versus the EU on debt conditions. He contrasts Chinese non-interventionist lending with EU conditionality, drawing on the Piraeus port.

A short clip of Steve Jobs explaining how sales and marketing people take over mature companies from product people, leading to product decline.

Applied Science shows how telecentric and hypercentric optics differ from normal lenses, producing no or negative perspective. The video builds a telecentric system from a Fresnel lens and demonstrates a lens that can see around objects.