TR2005-034
Change Detection by Frequency Decomposition: Wave-Back
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- "Change Detection by Frequency Decomposition: Wave-Back", Workshop on Image Analysis for Multimedia Interactive Services, April 2005.BibTeX TR2005-034 PDF
- @inproceedings{Porikli2005apr1,
- author = {Porikli, F. and Wren, C.R.},
- title = {Change Detection by Frequency Decomposition: Wave-Back},
- booktitle = {Workshop on Image Analysis for Multimedia Interactive Services},
- year = 2005,
- month = apr,
- url = {https://www.merl.com/publications/TR2005-034}
- }
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- "Change Detection by Frequency Decomposition: Wave-Back", Workshop on Image Analysis for Multimedia Interactive Services, April 2005.
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Research Area:
Abstract:
We introduce a frequency decomposition based background generation and subtraction method that explicitly harnesses the scene dynamics to improve segmentation. This allows us to correctly interpret scenes that would confound appearance-based algorithms by having high-variance background in the presence of low-contrast targets, specifically when the background pixels are well modeled as cyclostationary random processes. In other words, we can distinguish near-periodic temporal patterns induced by real-world physics: the motion of plants driven by wind, the action of waves on a beach, and the appearance of rotating objects. To capture the cyclostionary behavior of each pixel, we compute the frequency coefficients of the temporal variation of pixel intensity in moving windows. We maintain a background model that is composed of frequency coefficients, and we compare the background model with the current set of coefficients to obtain a distance map. To eliminate trail effect, we fuse the distance maps.
Related News & Events
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NEWS Workshop on Image Analysis for Multimedia Interactive Services 2005: publication by MERL researchers and others Date: April 13, 2005
Where: Workshop on Image Analysis for Multimedia Interactive Services
Research Area: Computer VisionBrief- The paper "Change Detection by Frequency Decomposition: Wave-Back" by Porikli, F. and Wren, C.R. was presented at the Workshop on Image Analysis for Multimedia Interactive Services.