Developing In Situ Real-Time Image Compression and Telemetry Capabilities for the Vertically Profiling Video Plankton Recorder

Gallager，9820103提供资金用于为自主垂直剖面浮游生物观测站（AVPPO）开发和实施近实时图像处理和双向遥测功能。 AVPPO的设计目的是收集海洋高能大陆架区域浮游生物垂直位置和分类组成的高分辨率时间序列数据，以及毫米至100米空间尺度的辅助环境数据，目前，AVPPO将所有水文和录像数据储存在录像带上，这是部署长度的限制因素。 进一步的发展使水文和视频数据的实时处理，从而允许快速数据传输到海岸后，每个剖面。一台高分辨率数码相机将取代两台标准摄像机。视频数据将使用新的小波压缩技术压缩90倍，然后记录在6Gb硬盘上，最多可连续记录约30小时，从而将剖面仪的能力扩展到100米深度的约300个剖面。还将通过VHF、蜂窝电话和可能的卫星链路实现全双工交互通信，这取决于传感器系统的带宽要求。最终，这项技术将允许对关键环境变量进行长期、高频率的监测，这是传统采样系统无法做到的。

Gallager, 9820103Funds are provided to develop and implement near real-time image processingand bi-directional telemetry capabilities for the Autonomous VerticallyProfiling Plankton Observatory (AVPPO). AVPPO was designed to collecthigh-resolution time-series data on the vertical position and taxonomiccomposition of the plankton together with ancillary environmental data onspatial scales of mm to 100 m in high-energy Shelf regions of the ocean.Presently, AVPPO stores all hydrographic and video data on video tape,which is the limiting factor for deployment length. Further developmentwill enable the processing of both the hydrographic and video data inreal-time, thereby allowing rapid data transmission to shore after eachprofile. A single high-resolution digital camera will replace two standardvideo cameras. Video data will be compressed 90 fold using new waveletcompression technology then recorded on a 6 Gb hard drive for a maximum ofabout 30 h continuous recording, thus extending the profiler's capabilityto about 300 profiles from 100 m depth. Full duplex interactivecommunications through VHF, cellular phone, and possibly satellite linksdepending on the bandwidth requirements of the sensor systems will also beimplemented. Ultimately, this technology will allow long-term,high-frequency monitoring of critical environmental variables which wouldbe impossible by conventional sampling systems.