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In this paper, a scheme to identify the type of script of printed documents for multi-script OCR system is presented. This scheme works on block or paragraph of the given printed document. The proposed scheme uses Wavelet features and MPEG-7 Edge Histogram Descriptor (EHD) feature applied on the wavelet coefficients at level 1 to identify the type of script. To reduce the dimension of the feature...
The paper presents an efficient and simple approach for content based image retrieval. It utilizes the strength of multi resolution wavelet transform and edge histogram to extract color and texture features. The wavelet based color feature extraction scheme performs better than existing Mpeg-7 color descriptors. Texture features are extracted from the edge histogram obtained from wavelet coefficients...
This paper presents a robust watermarking scheme of digital videos using YCbCr color space and Wavelet based techniques. The proposed scheme divides the given watermark in two parts. One smaller part is embedded in Y channel with lesser embedding strength, while other larger part is embedded in Cr channel with higher embedding strength to achieve good balance of imperceptibility and robustness. Embedding...
In this paper, an adaptive scheme of real time denoising of musical signals corrupted by white Gaussian noise based on wavelet transform is presented. The proposed scheme is adaptive in nature and does not require manual tuning of any parameter. It automatically estimates the amount of noise present in the signal and calculates the required value of threshold for each level of wavelet decomposition...
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