(A) When a traditional Gaussian beam is used, diffraction causes the illumination beam to widen at the edges. (B) Joint optimization scheme. A network predicts the positions of beads in the focal ...

Techniques that exploit the phase of X-rays, not just their absorption, have the potential to transform X-ray imaging in hospitals, reports Jude Dineley Improved imaging Marian Willner from the ...

Coded aperture imaging (CAI) is another incoherent imaging technique developed in the 20 th century to achieve lensless 2D imaging with nonvisible wavelengths. In CAI, the light from an object is ...