We introduce novel semi-automatic, fast and accurate segmentation technique that allow us to simplify color transfer to the old black and white cartoons produced by classical paper or foil technology, where foreground parts are represented by homogeneous regions with constant grey-scale intensity surrounded by bold dark contours. We assume that original analogue material has been converted to the sequence of digital grey-scale images with PAL resolution suitable for TV broadcasting.
A large data set of input RAW photos for 3D reconstruction of historical paper model of Prague is presented in this paper. The data acquisition process and its organisation are described in detail together with color and camera calibration algorithms used. Moreover, a complete reconstruction work-flow together with several cultural heritage applications are briefly presented. The subject of this 3D reconstruction has been the Langweil model of Prague, originally created in the first half of 19 th century. Three parts of this model with different characteristics are afforded for computer scientists through the internet.
Diaryliodonium salts are used in organic chemistry, materials science and pharmaceutical chemistry. For the quantitative analysis of diaryliodonium salts, only instrumentally demanding techniques requiring highly skilled operators are available. Surprisingly, no titration method taking advantage of the oxidising ability of diaryliodonium is available in the literature. In the present work, a titration method for the determination of diaryliodonium salts is presented. It is based on the reaction of diaryliodonium species with ascorbic acid, whose excess is subsequently determined by means of iodometric potentiometric titration. Application of the protocol to various diaryliodonium salts revealed the scope and limitations of the method.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.