Simple Signal Extension Method for Discrete Wavelet Transform

Discrete wavelet transform of finite-length signals must necessarily handle the signal boundaries. The state-of-the-art approaches treat such boundaries in a complicated and inflexible way, using special prolog or epilog phases. This holds true in particular for images decomposed into a number of scales, exemplary in JPEG 2000 coding system. In this paper, the state-of-the-art approaches are extended to perform the treatment using a compact streaming core, possibly in multi-scale fashion. We present the core focused on CDF 5/3 wavelet and the symmetric border extension method, both employed in the JPEG 2000. As a result of our work, every input sample is visited only once, while the results are produced immediately, i.e. without buffering.Comment: preprint; presented on ICSIP 201

Kitaibel Pál (1757–1817) és a 21. század – mitől lesz „élő” egy 200 éves herbárium? = A 200-year-old “living herbarium” – bringing botanist Pál Kitaibel (1757–1817) into the 21st century

With about 15 thousand specimens, the first major Hungarian plant collection, the Kitaibel Herbarium, spans the turn of the 18th to 19th centuries. After several years of work, databasing and digitising the entire collection was completed in 2013. To mark this occasion, this paper discusses the merits of such a historic plant collection and the signifi cance of its precious herbarium samples for modern botanical research. With 2 figures

Logic of complementarity in science and theology

SIGLEAvailable from British Library Document Supply Centre- DSC:D92427 / BLDSC - British Library Document Supply CentreGBUnited Kingdo