Abstract
According to the fact that the sites of wired video monitoring system cannot move, wiring is not flexible and high network bandwidth is required to transmit video data stream. H.264 video compression standard is adopted, WiFi is introduced as the wireless transmission network, and video coding and compression are produced on embedded S3C6410-based platform, which makes compressed data streams transmitted via WiFi. Based on the above, a wireless video monitoring system is built. It is proved that the site amount of the monitoring system could be increased or decreased in demand and moved arbitrarily through the experiment. Monitor image is clear and stable, and the system could be actually applied in petroleum exploitation, geological exploration, and so on.
Highlights
Wireless network possesses many advantages such as no installation work, good flexibility, and convenience of communication [1, 2], and it gets more attention and wider application
The same parts are processed through motion estimation in adjacent frames, and energy of data blocks is made more concentrated by the time-frequency transform
In this paper, embedded development platform based on S3C6410 processor and multiformat codec (MFC) module which was integrated in S3C6410 are adopted to encode video data
Summary
Wireless network possesses many advantages such as no installation work, good flexibility, and convenience of communication [1, 2], and it gets more attention and wider application. Common Moving Picture Expert Group 1 (MPEG1) and Moving Picture Expert Group 2 (MPEG2) are developed for high-level media, and they are difficult to ensure real-time transmission in wireless fidelity (WiFi) network because of their poor interactive function, low flexibility, and low compression ratio. In H.264 standard, the constituents of joint video team (JVT) are International Telecommunication UnionTelecommunication Sector (ITU-T) video coding experts group and International Organization for Standardization/International Electrotechnical Commission (ISO/IEC) motion pictures experts group [3]. It released a high compression digital video codec standard, H.264, in 2003, which was accepted as the tenth part of MPEG-4. For longdistance monitoring [5, 6], the compressed video stream is transmitted to back-end through WiFi
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