| UNIVERSITAT ZU LUBECK Patent applications |
| Patent application number | Title | Published |
|---|
| 20120120073 | Method for the Real-Time-Capable, Computer-Assisted Analysis of an Image Sequence Containing a Variable Pose - The invention relates to a method for the real-time-capable, computer-assisted analysis of an image sequence of an object consisting of elements that can be moved relative to each other and are interconnected, said sequence containing a variable pose, wherein the individual images of the image sequence are recorded by way of a time-of-flight (TOF) camera such that said images can be processed by a computer, and contain brightness and distance data as functions of the pixel coordinates of the camera for each image of the sequence, comprising the following steps: a. Capturing the pixels of an individual image forming the object, b. calculating a three-dimensional (3D) point cloud in a virtual space, said point cloud representing the surface of the object that is visible to the camera, by a computational projection of object-depicting pixels in such a space, while taking captured distance data to the object into consideration, c. fitting a model of the object consisting of nodes and edges into the computer-generated 3D point cloud for the individual image, wherein the nodes represent a selection of elements of the object and the edges represent the connections of said elements among each other, d. iteratively updating all node positions by applying a learning rule for training a self-organizing map having a previously defined number of randomly selected dots of the point cloud, e. repeating steps a. to d. for each subsequent individual image of the sequence, wherein for the fitting in step c. the result of step e. of the preceding image is used in each case, and f. determining the varying pose from the positions of predetermined nodes of the model which have been captured in at least representative images of the image sequence. | 05-17-2012 |
| 20100163540 | Method for Laser Machining Transparent Materials - A method for machining a transparent material by the non-linear absorption of pulsed laser radiation, in the region of a laser focus, includes the following steps: a laser wavelength of between 300 and 1000 μm is selected; and laser impulses having a temporally flat beam profile are applied. The method is characterized in that the irradiation intensity is selected from an interval predetermined for the material to be machined, in which plasma is formed without plasma luminescence. An apparatus for laser treating a transparent material includes structure to set an irradiance and inspect the treatment as being within a defined interval. | 07-01-2010 |
| 20100021983 | Laser Dosimetry for the Optoperforation of Single Cells - A method of optoperforation of the membrane of a cell by application of laser pulses characterized by focusing the pulsed laser beam onto the cell membrane to be perforated, applying a series of laser pulses of predetermined pulse energy, measuring the oscillation time of the bubbles formed in the laser focus from the change in laser intensity of a test laser beam transmitted through the laser focus and caused by the bubbles in the laser focus, and increasing the pulse energy to a level at which the oscillation time of the bubbles attains a predetermined value. | 01-28-2010 |
| 20090193045 | COMPRESSION METHOD FOR A DATA TRANSFER THAT IS INDEPENDENT OF COMPUTER ARCHITECTURE AND/OR DECOMPRESSION METHOD FOR A DATA RECORD - A compression method for a data transfer that is independent of computer architecture and/or a decompression method for a data record that contains structural indicators and variable values are provided. The method includes the following steps: provision of a string automaton, which represents the structuring rules of the data record in a unit that compresses the original data record; input of the data record into the string automaton; generation of a second, shorter data record by the string automaton, the record containing the variable values of the first data record and control symbols that are specific to the string automaton equipment, the symbols representing a switch from an automaton condition to a sequence condition; and transmission of the second data record to a similar string automaton, which interprets the control symbols, whereby a copy of the original data record with an identical data structure is generated. | 07-30-2009 |
