Hoechst Aktiengesellschaft

Koninklijke Philips Corporation N.V.

Matthias Wolfgang Meyer

Michael Kaus

Armin Pfeil

Vladimir Pekar

Claus Godau

Todd R McNutt

Joerg-Peter Geisler

Bernhard Stengel-Rutkowski

Thomas Gries

Stefan Petri

Hariolf Kottmann

Ralf Stapel

Todd R Mcnutt

An exemplary embodiment of the invention provides a method for producing a triangulation of a surface of a physical object the method comprising the steps of generating an intermediate mesh representation of the surface out of surface voxels () and detecting at least one T-junction in the intermediate mesh representation (). The method further comprising the steps of decomposing of the at least one T-junction into at least one triangle and at least one two-point-polygon (), and generating the triangulation of the surface out of the modelled intermediate mesh representation ().

Triangulation method of a surface of a physical object

An image segmentation method segments a plurality of image features in an image. The plurality of image features are segmented non-simultaneously in succession. The segmenting of each image feature includes adapting an initial mesh to boundaries of the image feature. The segmenting of each image feature further includes preventing the adapted mesh from overlapping any previously adapted mesh.

Region-competitive deformable mesh adaptation

For a digital demodulator for AM demodulation of a difference sound signal in a digital multiplex signal, which multiplex signal also comprises a sum sound signal in the baseband position and a pilot carrier at a pilot frequency, and the difference sound signal is modulated on a carrier at twice the pilot frequency, an extremely simple and adjustment-free construction is ensured in that CORDICs () are provided which perform a coordinate transformation of polar coordinates into cartesian coordinates and each have a phase input, two amplitude inputs assigned to the coordinates x and y and two outputs assigned to the coordinates x and y, in that a phase-locked loop comprising a first CORDIC (), a loop filter () and an accumulator () are provided, which phase-locked loop supplies a phase ramp signal whose repetition frequency is dependent on the input signal of the accumulator, in that the multiplex signal at an amplitude input of the first CORDIC (), the output signal of the accumulator () at the phase input of the first CORDIC () and that output of the first CORDIC () which is not assigned to the same coordinate as the amplitude input used are applied to the loop filter () whose output signal is superimposed by means of a first superposition stage () on a frequency selection signal indicating a pilot nominal frequency, and the output signal of the superposition stage () is applied to the accumulator input (), in that a second CORDIC () is provided, one amplitude input of which receives the multiplex signal with the suppressed pilot and the phase input of which receives the output signal from a multiplier () whose input receives the output signal from the accumulator () and multiplies said output signal by a factor of two, and in that the output of the second CORDIC () supplies the demodulated difference sound signal.

Digital AM demodulator

Polyol/epoxy adducts obtained by reaction of

Polyol/epoxy adducts for use as emulsifier for liquid epoxy resins

The invention relates to a process for the preparation of perfluorinated ethers of the formula (I)

Process for the preparation of perfluorinated ethers

A process for the preparation of perfluoropolyetheracyl fluorides of formula (I)

Process for the preparation of perfluoropolyetheracyl fluorides

The invention relates to a process for the preparation of perfluorinated ethers of the formula R--CF.sub.2 --CF.sub.3, in which R is the radical CF.sub.3 (CF.sub.2).sub.2 --O--[--CF(CF.sub.3)CF.sub.2 --O].sub.n --, in which n is an integer from 0 to 60, by decarbonylation of perfluoroether-acyl fluorides of the formula R--CF(CF.sub.3)--COF at 150.degree.-350.degree. C. in the presence of AlCl.sub.3 and/or AlBr.sub.3.

The invention relates to a process for the preparation of fluorinated ethers of the formula (I)

Growing community of inventors

Hannover, Germany

Matthias Wolfgang Meyer