Search results
Results from the WOW.Com Content Network
Spread-spectrum watermarks are known to be modestly robust, but also to have a low information capacity due to host interference. A digital watermarking method is said to be of quantization type if the marked signal is obtained by quantization. Quantization watermarks suffer from low robustness, but have a high information capacity due to ...
Thus the watermark is spread over many frequency bands so that the energy in one band is undetectable. An interesting feature of this watermarking technique is that destroying it requires noise of high amplitude to be added to all frequency bands. Spreading spectrum is done by a pseudonoise (PN) sequence. In conventional SSW approaches, the ...
Spread-spectrum techniques are used for the establishment of secure communications, increasing resistance to natural interference, noise, and jamming, to prevent detection, to limit power flux density (e.g., in satellite downlinks), and to enable multiple-access communications.
Shamoon was one of the authors of Secure spread spectrum watermarking for multimedia in 2014, [4] a paper on digital watermarking published in IEEE Transactions on Image Processing (Volume 6, Issue 12). This paper was awarded the Sustained Impact Paper Award by the IEEE Signal Processing Society in 2015. [5]
Cinavia's in-band signaling introduces intentional spread spectrum phase distortion in the frequency domain of each individual audio channel separately, giving a per-channel digital signal that can yield up to around 0.2 bits per second [4] —depending on the quantization level available, and the desired trade-off between the required ...
ChatGPT developer OpenAI is supporting a California bill that would require tech companies to label AI-generated content, which can range from harmless memes to deepfakes aimed at spreading ...
Direct-sequence spread-spectrum transmissions multiply the symbol sequence being transmitted with a spreading sequence that has a higher rate than the original message rate. Usually, sequences are chosen such that the resulting spectrum is spectrally white. Knowledge of the same sequence is used to reconstruct the original data at the receiving ...
Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.