3D-examples |
|
Prof. Dr. V. Aurich
Institut für Informatik Heinrich-Heine-Universität Düsseldorf |
Abstract | 2D-examples | 3D-examples | Publications | Programs | Home Page |
Example for Edge Preserving Smoothing of an Image Sequence
Notice that also human observers detect the squares immediately if the image sequence is displayed with a faster image rate. If you have the ImageMagick package you can animate the sequence using the command: animate 3Ddemo/*
Each image of the sequence consists of 4 subimages:
The file 3Ddemo.tar.gz is a gtared and gzipped directory named 3Ddemo which contains the 64 images of the sequence in PGM format. They show two moving and blinking squares. The original sequence has been disturbed by additive Gaussian noise the variance of which is so large that in each single image the squares cannot be seen any more. Nevertheless a three-dimensional nonlinear Gaussian filter chain is able to extract them again.
Be patient! ImageMagick needs some time to load all images.
the undisturbed image
the disturbed image
the result of the filter chain
the locally binarized result
This is e.g. the 33rd image of the sequence: