Real-time, multidirectional 2D fast wavelet transform and its denoised sharpening application

B. J. Baek; T. C. Kim

doi:10.1117/12.909562

24 January 2012 Real-time, multidirectional 2D fast wavelet transform and its denoised sharpening application

B. J. Baek, T. C. Kim

Proceedings Volume 8299, Digital Photography VIII; 82990T (2012) https://doi.org/10.1117/12.909562
Event: IS&T/SPIE Electronic Imaging, 2012, Burlingame, California, United States

Abstract

This paper presents a real-time multi-directional 2D fast wavelet transform. As a real-time implementation of wavelet, small pixel windows in raster scan order are sequentially used as inputs to the transform instead of full image frame. This approach is corresponding to a recent image sensor releasing image pixels in line-by-line scanning order. The proposed method has high locality property so as to achieve low-latency real-time implementation adequate for recent mobile highly cost-effective application and it uses multi-directional decomposition which enables the transform to reduce the directional artifacts often occurring in conventional two-directional separable decomposition wavelet. As a possible application of the proposed wavelet, denoised sharpening algorithm was devised and the result is presented, representing the enhancement of directional and blocking artifacts problem.

Citation Download Citation

B. J. Baek and T. C. Kim "Real-time, multidirectional 2D fast wavelet transform and its denoised sharpening application", Proc. SPIE 8299, Digital Photography VIII, 82990T (24 January 2012); https://doi.org/10.1117/12.909562

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