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The secure digital watermarking method for digital images is proposed. This method is based on error correcting codes (ECC) that are perfect in weighted Hamming metric. The usage of perfect ECC guarantees the limited number of errors (distortions of initial image) that occur in watermarking process. The use of ECC that are perfect in weighted Hamming metric(More)
Measurements of spectral translucent coefficients of four types of protective spectacles with clean and tinted glasses were done using the C phi-46 spectrophotometer. Translucent coefficients were calculated according to a special programme in relation to the visibility factor curve. Vision acuity evaluation for the analysed spectacles is given. It was(More)
The paper presents a study of efficiency of information embedding in BMP images by using codes perfect in a weighted Hamming metric (WHM) and standard Hamming codes. The weighted container model and modification of algorithm F5 is used, which allows to record information in multiple bit planes images (MLSB), taking into account the significance of each bit(More)
Application of a modern method of introscopy--electroimpedance tomography (EIT) for diagnosis of different types of lung diseases is described. The EIT system including measurement and collecting data devices, 16-electrodes array and IBM PC 486 computer was used. The results of analysis of electrotomograms have demonstrated that the EIT-system can be(More)
The comparison of efficiency of two such approaches LEBC embedding method and Weighted F5 embedding that are used for weighted structures of container and F5 method that is used for least significant bit(LSB) embedding is made. The comparison metric was found for correct comparison of weighted and unweighted syndrome coding embedding. As a result the(More)
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