title: A companding approach for nonuniform quantization of digital holograms of three-dimensional objects.
abstract: We apply two novel nonuniform quantization techniques to digital holograms of three-dimensional real-world objects. Our companding approach, combines the efficiency of uniform quantization with the improved performance of nonuniform quantization. We show that the performance of companding techniques can be comparable with k-means clustering and a competitive neural network, while only requiring a single-pass processing step. The quantized holographic pixels are coded using lossless techniques for the calculation of compression ratio.
authors.forename: Alison E
authors.initials: AE
authors.lastname: Shortt
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Naughton
authors.forename: Bahram
authors.initials: B
authors.lastname: Javidi