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People's Procuratorate is the country's legal oversight body , has the power of investigation of the crimes committed . Early interrogation of criminal suspects and more in offices , hotels or other places , low efficiency , investigators can not guarantee safety and prevent crime suspects estoppel . Order by engineering practice and building a audiovisual system applicable to the prosecution system interrogation job-related crimes suspects , to achieve synchronized audio and video recording of the interrogation scene , can be reached through the network and remote monitoring command . According to the requirements of the Supreme People's Procuratorate and the procuratorial organs digitized construction , reconnaissance and command and trial monitoring building the business needs of advanced audio and video encoding decoding technology , streaming media and centralized storage technology , information security technology , computer communications and control technology , database technology , the development of a set of interrogation duties suspects sync audio and video surveillance platform . The system is fully functional , state-of-the-art technology , reliable performance , user-friendly operation , can be very effective to help the public, prosecutors , law departments handling the case , to effectively combat crime , to prevent the suspects baseless allegations of torture and other investigators phenomenon , reflecting the procuratorial organs civilization handling the case of image. The integrated synchronous audio and video recording system enables the majority of police officers and men of the prosecutors at all levels to be able to take full advantage of the information , networking , electronic resources , vigorously promote the the procuratorial organs trial work , hierarchical promote the information construction of procuratorial organs . And give a recorded audio-visual materials , DCT-based video watermarking scheme , experiments show that the scheme can be selected based on randomly generated key sequence embedded watermark video frame , and each selected video frames are embedded in a complete watermark information , better able to resist noise , filtering, cropping attack . Meanwhile, the uncertainty of the position of watermark and the watermark strength , it is possible to further enhance the ability of resistance to collusion attacks . The synchronized audio and video recording , integrated system focused on to ensure the performance of advanced, mature technology , applications normative evidence of safety and adaptability to changes in demand , and greatly promote the of the the procuratorial organs interrogation construction pace , rich procuratorial organs Dedicated network applications .
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