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A novel denoising method based on empirical mode decomposition (EMD) is put forward in this paper. With the new method, the nonlinear and non-stationary signal is decomposed into intrinsic mode functions (IMF) via EMD, then, high frequency IMFs will be processed by threshold denoising approach. The difference between the proposed method and the wavelet transform (WT) is that the EMD method can be...
Adverse weather conditions such as snow, fog or heavy rain greatly reduce the visual quality of outdoor surveillance videos. Video quality enhancement can improve the visual quality of surveillance videos providing clearer images with more details.
In this paper we present a novel algorithm for improving the visibility of surveillance videos degraded by fog and/or rain. The proposed algorithm adaptively enhances the global and local contrast of a surveillance video. The algorithm is inspired on the human visual system, and accounts for the perceptual sensitivity to noise, compression artifacts, and the texture of image content. The model is...
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