Real-time wavelet domain video denoising implemented in FPGA

Mihajlo Katona; Aleksandra Pizurica; Vladimir Zlokolica; Nikola Teslic; Wilfried R. Philips

doi:10.1117/12.573783

1 November 2004 Real-time wavelet domain video denoising implemented in FPGA

Mihajlo Katona, Aleksandra Pizurica, Vladimir Zlokolica, Nikola Teslic, Wilfried R. Philips

Proceedings Volume 5607, Wavelet Applications in Industrial Processing II; (2004) https://doi.org/10.1117/12.573783
Event: Optics East, 2004, Philadelphia, Pennsylvania, United States

Abstract

In this paper we develop an advanced spatio-temporal wavelet domain filtering algorithm which is suitable for hardware implementation, we implement it in the Field Programmable Gate Arrays (FPGA) and report the results of real-time processing. The wavelet decomposition in our implementation is non-decimated with three decomposition levels and with a Daubechies' minimum phase orthogonal wavelet. Noise reduction is implemented with spatially adaptive Bayesian wavelet shrinkage. In the next filtering stage, a motion detector controls selective, recursive averaging of pixel intensities over time. The algorithm is customized for the hardware implementation and is realized in FPGA. The standard composite television video stream is digitalized and used as source for real-time video sequences. The results demonstrate the effectiveness of the developed scheme for real time video processing.

Citation Download Citation

Mihajlo Katona, Aleksandra Pizurica, Vladimir Zlokolica, Nikola Teslic, and Wilfried R. Philips "Real-time wavelet domain video denoising implemented in FPGA", Proc. SPIE 5607, Wavelet Applications in Industrial Processing II, (1 November 2004); https://doi.org/10.1117/12.573783

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