Adaptive aperture defocused digital speckle photography

Adaptive aperture defocused digital speckle photography.

Speckle photography can be used to monitor deformations of solid surfaces. Its measuring characteristics, such as range or lateral resolution, depend heavily on the optical recording and illumination setup. I show how, by the addition of two suitably perforated masks, the effective optical aperture of the system may vary from point to point of the surface, accordingly adapting the range and res...

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...

Image and Depth from a Single Defocused Image Using Coded Aperture Photography

Depth from defocus and defocus deblurring from a single image are two challenging problems that are derived from the finite depth of field in conventional cameras. Coded aperture imaging is one of the techniques that is used for improving the results of these two problems. Up to now, different methods have been proposed for improving the results of either defocus deblurring or depth estimation....

Digital photography versus analogue photography 1 Running heading: DIGITAL PHOTOGRAPHY VERSUS ANALOGUE PHOTOGRAPHY. Digital versus Analogue Photography: a comparative analysis

Digital photography.