Debono Carl J, Micallef Brian W, Philip Nada Y, Alinejad Ali, Istepanian Robert S H, Amso Nazar N
IEEE Trans Inf Technol Biomed. 2012 Nov;16(6):1007-14. doi: 10.1109/TITB.2012.2201164. Epub 2012 May 30.
The application of advanced error concealment techniques applied as a post-process to conceal lost video information in error-prone channels, such as the wireless channel, demand additional processing at the receiver. This increases the delivery delay and needs more computational power. However, in general, only a small region within medical video is of interest to the physician and thus if only this area is considered, the number of computations can be curtailed. In this paper we present a technique whereby the Region of Interest (ROI) specified by the physician is used to delimit the area where the more complex concealment techniques are applied. A cross layer design approach in mobile WiMAX wireless communication environment is adopted in this paper to provide an optimized Quality of Experience (QoE) in the region that matters most to the mobile physician while relaxing the requirements in the background, ensuring real-time delivery. Results show that a diagnostically acceptable Peak Signal-to-Noise-Ratio (PSNR) of about 36 dB can still be achieved within reasonable decoding time.
作为一种后处理应用的先进错误隐藏技术，用于在易出错的信道（如无线信道）中隐藏丢失的视频信息，这需要在接收器处进行额外处理。这增加了传输延迟并需要更多的计算能力。然而，一般来说，医生只对医学视频中的一个小区域感兴趣，因此如果只考虑这个区域，计算量就可以减少。在本文中，我们提出了一种技术，通过该技术，医生指定的感兴趣区域（ROI）用于界定应用更复杂隐藏技术的区域。本文采用移动WiMAX无线通信环境中的跨层设计方法，在对移动医生最重要的区域提供优化的体验质量（QoE），同时放宽背景要求，确保实时传输。结果表明，在合理的解码时间内仍可实现约36 dB的诊断可接受峰值信噪比（PSNR）。
