Three-dimensional Representation by Contour Line Method

On contour representation of two dimensional patterns

Two-dimensional patterns are used in many research areas in computer science, ranging from image processing to specification and verification of complex software systems (via scenarios). The contribution of this paper is twofold. First, we present the basis of a new formal representation of two-dimensional patterns based on contours and their compositions. Then, we present efficient algorithms ...

Analysis of Planar Microstrip Circuits Using Three-Dimensional Transmission Line Matrix Method

The frequency-dependent characteristics of microstrip planar circuits have been previously analyzed using several full-wave approaches. All those methods directly give characteristic of the circuits frequency by frequency. Computation time becomes important if these planar circuits have to be studied over a very large bandwidth. The transmission line matrix (TLM) method presented in this paper ...

Three-line High-power Three-dimensional Sensor

This paper describes a sensor that employs three laser beams in order to measure the 3-D distress characteristics of road surfaces at highway speed. The 3-D feature extraction is done by means of a combination of two measuring techniques: triangulation and defocusing. In order to generate a pattern of transverse profiles spaced by 11cm at a speed of about 20m/s, three transverse profiles are ac...

Improvement of Accuracy in Environmental Dosimetry by TLD Cards Using Three-dimensional Calibration Method

Background: The angular dependency of response for TLD cards may cause deviation from its true value on the results of environmental dosimetry, since TLDs may be exposed to radiation at different angles of incidence from the surrounding area.Objective: A 3D setting of TLD cards has been calibrated isotropically in a standard radiation field to evaluate the improvement of the accuracy of meas...

Evaluation of Intrauterine Structural Pathology by Three-Dimensional Sonohysterography Using An Extended Imaging Method