Digital holography for three-dimensional imaging
Departmental seminar, 25 February 2002
Tom Naughton, Department of Computer Science, NUI Maynooth, Ireland
Abstract. Digital cameras and photographic film capture images. Images record the intensity of an optical wavefront. With digital holography we can record the intensity and directional information of an optical wavefront, thus encoding some three-dimensional (3D) information about the objects we image. The creation of digital holograms of real-world objects has only recently become viable with the advent of high-quality megapixel digital cameras. The capabilities for digital holography and the limits associated with encoding multiple-perspective images in a single complex-valued digital hologram remain to be characterised. In this talk I will explain how we capture digital holograms, discuss some successful 3D pattern recognition applications, present the initial results of our (lossless and novel lossy) hologram compression efforts, and discuss our ideas for realtime reconstruction of digital holographic video.