TY - GEN

T1 - Optimizing video signal processing algorithms by evolution strategies

AU - Blume, H.

AU - Franzen, O.

AU - Schmidt, M.

PY - 1997

Y1 - 1997

N2 - Today many kinds of postprocessing are used in digital TV receivers or multimedia terminals for video signals to enhance the picture quality. To achieve this the properties of human visual perception have to be regarded. Because of the nonlinear nature of human visual perception (e.g. perception of edges and objects) many algorithms have been developed and optimized by heuristic methods or by application of rough image models. This is a severe problem as there are sometimes contradictory demands (e.g. detail resolution and alias suppression) and there are many optimization problems which cannot be solved analytically. Furthermore the simulations which have to be carried out in the field of video processing have to take into account a great variety of test sequences and therefore possess a heavy simulation load. In this paper we present the results of evolution strategies (ES) applied to develop and optimize some modules of a video signal processing feature box. The modules we have analyzed are as follows: A proscan conversion module is required to convert incoming interlaced TV signals into a progressive format which is obligatory for computer monitors or LCD and DMD devices (e.g. projectors) as they cannot display interlaced signals [1]. Further linear and nonlinear filter techniques are required for spatial conversion techniques like zooming or a picture in picture reproduction. For high quality temporal scan conversion techniques (e.g. 50 Hz interlace to 100 Hz interlace scan conversion reducing annoying artifacts as large area or detail flicker) motion vector based video processing is state of the art [1]. The motion information is generated by motion estimation algorithms.

AB - Today many kinds of postprocessing are used in digital TV receivers or multimedia terminals for video signals to enhance the picture quality. To achieve this the properties of human visual perception have to be regarded. Because of the nonlinear nature of human visual perception (e.g. perception of edges and objects) many algorithms have been developed and optimized by heuristic methods or by application of rough image models. This is a severe problem as there are sometimes contradictory demands (e.g. detail resolution and alias suppression) and there are many optimization problems which cannot be solved analytically. Furthermore the simulations which have to be carried out in the field of video processing have to take into account a great variety of test sequences and therefore possess a heavy simulation load. In this paper we present the results of evolution strategies (ES) applied to develop and optimize some modules of a video signal processing feature box. The modules we have analyzed are as follows: A proscan conversion module is required to convert incoming interlaced TV signals into a progressive format which is obligatory for computer monitors or LCD and DMD devices (e.g. projectors) as they cannot display interlaced signals [1]. Further linear and nonlinear filter techniques are required for spatial conversion techniques like zooming or a picture in picture reproduction. For high quality temporal scan conversion techniques (e.g. 50 Hz interlace to 100 Hz interlace scan conversion reducing annoying artifacts as large area or detail flicker) motion vector based video processing is state of the art [1]. The motion information is generated by motion estimation algorithms.

UR - http://www.scopus.com/inward/record.url?scp=84947730248&partnerID=8YFLogxK

U2 - 10.1007/3-540-62868-1_151

DO - 10.1007/3-540-62868-1_151

M3 - Conference contribution

AN - SCOPUS:84947730248

SN - 3540628681

SN - 9783540628682

T3 - Lecture Notes in Computer Science

SP - 547

EP - 548

BT - Computational Intelligence

A2 - Reusch, Bernd

PB - Springer Verlag

T2 - 5th Fuzzy Days International Conference on Computational Intelligence, CI 1997

Y2 - 28 April 1997 through 30 April 1997

ER -