Parallel scheme in multicore processors for video authentication based on watermarking

Currently, with the accelerated advance of information technologies, the use of digital video has been constantly growing, which has been applied in multiple fields of research like security, medicine, autonomous navigation, etc. Likewise, digital video processing tools have emerged, which can be used for beneficial or malicious purposes. Therefore, it has become a necessity to protect the integrity of digital video. During the last years, different schemes have been developed, which can detect the alterations in digital files, but the main disadvantage of these systems is that few of them are implemented in digital video, because these files require computational equipment with a high processing capacity. The present study presents a parallel framework for the detection of alterations in digital video, based on the embedding of a watermark in the frequency domain using the Discrete Wavelet Transform (DWT). The developed scheme appears to demonstrate full advantage of the processing capacity of each computer device. Also, the proposed method is developed to work in parallel on devices with multi-core processors. During the evaluation of the system, the PSNR (Peak Signal-to-Noise Ratio) was calculated to evaluate the quality of the protected file. The obtained results show that the protected videos are not visually degraded during the embedding of the watermark and the detection of alterations is performed correctly. Similarly, there is a significant reduction in processing time values when the algorithm is executed on computer with multi-core processors.