My July column (“Calibrate camera coordinates and colors”) described techniques you can use to calibrate vision systems. In some cases, though, basic calibrations do not suffice. General-purpose ...

Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...

Using entire galaxies as lenses to look at other galaxies, researchers have a newly precise way to measure the size and age of the universe and how rapidly it is expanding. The measurement determines ...

Cataracts remain a leading cause of visual impairment globally, necessitating precise and objective methods for assessing lens opacification. Recent advances in imaging, particularly through ...

This isn’t Google Glass in a contact lens, but it may just be Google’s first step in this direction. The company’s Google X lab just teased a smart contact lens on its blog that is meant to help ...

Image: When a large nearby object, such as a galaxy, blocks a distant object, such as another galaxy, the light can detour around the blockage. But instead of taking a single path, light can bend ...