Lehrstuhl für Allgemeine Elektrotechnik und Theoretische Nachrichtentechnik
Prof. Dr.- Ing. Anton Kummert
Prof. Dr.-Ing. Anton Kummert
|Telefon:||+49 (0)202 439 1961|
2-D signal theoretic investigation of background elimination in visual tomographic reconstruction for safety and enabling health applications
2015 IEEE International Symposium on Circuits and Systems (ISCAS) , Seite 2377-2380.
Schlüsselwörter: 2D signal theoretic investigation, 3D scene reconstruction, background elimination, Biomedical imaging, cameras, classical medical tomography applications, computerised tomography, elderly people, filtering techniques, health applications, Image reconstruction, Legged locomotion, mathematical analysis, mathematical description, medical image processing, medical tomography, multidimensional spectra, physical disabilities, Radio frequency, reconstruction process, reconstruction quality, Tomography, visual tomographic reconstruction, Visualization
A multidimensional wave digital filter bank for video-based motion analysisMultidimensional Systems and Signal Processing, 25(2):295 - 311
Insufficiencies of Practical BIBO Stable n-D SystemsMultidimensional Systems and Signal Processing, 25:3 - 15
Schlüsselwörter: multidimensional digital filters, multidimensional systems, Stability
A multidimensional signal processing approach to Wave Digital Filters with topology-related delay-free loops
IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP'14) , Seite 389 - 393.
Control law design for discrete linear repetitive processes with non-local updating structuresMultidimensional Systems and Signal Processing, 24:707 - 726
Schlüsselwörter: Control law design, Discrete linear repetitive processes, Stability analysis
Zusammenfassung: Repetitive processes are a class of 2D systems where information propagation in one direction is of finite duration. These processes make a series of sweeps, termed passes, through a set of dynamics and on completion of each pass resetting to the starting position occurs ready for the start of the next pass. The control problem is that the previous pass output, termed the pass profile, acts as a forcing function on the current pass and can result in oscillations that increase in amplitude from pass-to-pass. In the case of discrete dynamics, these processes have structural links with 2D systems described by the well known Roesser and Fornasini–Marchesini state-space models but some applications require updating structures that cannot be represented by these models. This requirement arises either in adequately modeling the dynamics or as a result of the control law structure and requires the development of a systems theory for eventual use in applications. In this paper such a theory is advanced through the development of new control law design algorithms.
Proportional plus integral control of ladder circuits modeled in the form of two-dimensional (2D) systemsMultidimensional Systems and Signal Processing, :1 - 24
Tomographical object detection using a reduced number of projection angles
of the 8th International Workshop on Multidimensional (nD) Systems (nDS'13) , Seite 181 - 186.
Stabilization of a Class of Active Ladder Circuits based on a Wave Repetitive Process Approach by means of Multidimensional Wave Digital Filters
of the 8th International Workshop on Multidimensional (nD) Systems (nDS'13) , Seite 157 - 162.
Density Measurements from a Top-View Position using a Time-of-Flight Camera
of the 8th International Workshop on Multidimensional (nD) Systems (nDS'13) , Seite 193 - 198.
Automatic Privacy Protection Based on Haar Cascades and Spectral Domain Watermarking
of the 8th International Workshop on Multidimensional (nD) Systems (nDS'13) , Seite 199 - 204.
Zusammenfassung: A new system for automatic privacy protection in digital media, based on Haar cascades and spectral domain watermarking is described in the present paper. In a first step faces are detected by means of Haar cascades. Integral images are used to speed up calculations and the detection. Multiple detections of one face are combined. Succeeding steps comprise embedding the data into the image using spectral domain methods and deleting the area of privacy. An extended Discrete Haar Transformation is developed to transform arbitrary matrices. A Spread Spectrum method is used to embed the size and position of the faces into the cover image. Different methods for embedding regarding their fidality and performance are compared. Additionally the performance of the methods after cropping the images is presented.
Camera Based Object Position Estimation for Mobile Devices
of the 8th International Workshop on Multidimensional (nD) Systems (nDS'13) , Seite 175 - 180.
Evaluation of the Lens Distortion Errors in 2-D Image to 3-D World Coordinate Projections
of the 8th International Workshop on Multidimensional (nD) Systems (nDS'13) , Seite 187 - 191.