My proposed solution to the focus problem exploits the abundance of digital image sensor resolution to sample each individual ray of light that contributes to the final image. ... To record the light field inside the camera, digital light field photography uses a microlens array in front of the photosensor. Each microlens covers a small array of photosensor pixels. The microlens separates the light that strikes it into a tiny image on this array, forming a miniature picture of the incident lighting. This samples the light field inside the camera in a single photographic exposure. ... To process final photographs from the recorded light field, digital light field photography uses ray-tracing techniques. The idea is to imagine a camera conigured as desired, and trace the recorded light rays through its optics to its imaging plane. Summing the light rays in this imaginary image produces the desired photograph. This ray-tracing framework provides a general mechanism for handling the undesired non-convergence of rays that is central to the focus problem. What is required is imagining a camera in which the rays converge as desired in order to drive the final image computation.
More than 125 of these curious soccer ball-sized glass spheres hang near the floor of the Mediterranean Sea. Even though they’re deep underwater, they’re keeping a constant vigil for neutrinos, particles that may be evidence of dark matter, supernovae, and neutron stars far off in intergalactic space. Eventually, the Cubic Kilometer Neutrino Telescope (KM3NeT) will […]
A key challenge in building colonies on the moon is that it’s incredibly expensive to transport construction materials to space from Earth. That’s why researchers are exploring how moon bases could be mostly constructed from raw materials already there. A team of scientists working with the European Space Agency (ESA) are exploring how urine could […]
The new Mars rover Perseverance, set to launch in July for a February 2021 landing, will be outfitted with its own small helicopter. NASA engineers at Kennedy Space Station recently put the chopper through its paces, marking the last time they’ll spin it up before landing on the red planet. From Kennedy Space Center: The […]
Whether you’re looking to create perfect portraits or amazing artwork, if your medium is digital, you know you absolutely must have Photoshop to do your best making. So if you’ve been putting off really mastering the various techniques, tools, and styles it offers for your craft, now is a great time to make it happen. […]
There are few things more satisfying than the clickety-clack of an old keyboard. So old, in fact, that it’s really more of a typewriter sound and feel than that of a keyboard. But if you want to enjoy the benefits of both, check out this Rymek Retro Bluetooth 3.0 Mechanical Keyboard. Bringing you an impressive […]
There are plenty of productive ways to spend time while stuck indoors. While it’s undoubtedly fun to binge all 15 seasons of Supernatural or sink days of playtime into an Overwatch campaign, learning something new is definitely a more meaningful and long-term beneficial use of open hours. And if you’re going to invest time in […]