Diffusion coded photography for extended depth of field

Extended Depth of Field

I n t roduc t ion The narrow depth of field of the light microscope is either an asset or a liability depend microscopist. Occasionally, by limiting the image to a narrow plane in the vertical axis, i observer’s attention by isolating structures in a thick sample, perm object while ignoring distracting elements abov cases, this feature is a liability when the object’s importance lies in its thr...

Extended Depth of Field for Fluorescence Microscopy

High numerical aperture objectives result in extremely shallow depths of field, which may or may not be desired by the user of the microscope. When looking at extended objects, planes that arent necessarily perpendicular to the light path, or fluorophores that move in and out of focus, an extended depth of field (EDOF) would be useful to fully visualize the sample. PSF engineering can be applie...

Computational Photography: Epsilon to Coded Photography

Computational photography combines plentiful computing, digital sensors, modern optics, actuators, and smart lights to escape the limitations of traditional cameras, enables novel imaging applications and simplifies many computer vision tasks. However, a majority of current Computational photography methods involves taking multiple sequential photos by changing scene parameters and fusing the p...

Adaptive Coded Aperture Photography

We show how the intrinsically performed JPEG compression of many digital still cameras leaves margin for deriving and applying image-adapted coded apertures that support retention of the most important frequencies after compression. These coded apertures, together with subsequently applied image processing, enable a higher light throughput than corresponding circular apertures, while preserving...

Photography with Color-Coded Apertures