针对嵌入式视频soc的新型率失真感兴趣区域视频编码

2011 IEEE 5th International Conference on Internet Multimedia Systems Architecture and Application Pub Date : 2011-12-01 DOI:10.1109/IMSAA.2011.6156348

N. Srinivasamurthy, S. Nagori, Manoj Koul

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引用次数: 0

摘要

在本文中，我们提出了一种最新的，实用的，实时的，感兴趣区域(ROI)视频编码器，实现在德州仪器TMS320DM3x SOC上。该算法是一种新颖的率失真优化的ROI编码算法，具有较低的复杂度，非常适合在计算和内存资源较少的嵌入式视频soc上实现，同时具有优异的感知质量。该方案是一个完整的解决方案，将ROI处理纳入了从前端人脸检测到后端视频压缩的整个视频链。它可能是第一个在嵌入式SOC上实现的视频捕获和压缩系统之一，该系统依赖于使用前端或用户输入的目标检测方法进行ROI编码的专用速率失真方法。在300多个测试用例中，对所提出的算法进行了广泛的主观评价，从CIF到1080p视频分辨率，不同比特率。在所有不同的视频分辨率下，在不同的比特率下，显著的主观质量增强已经被观察到。与不使用基于ROI的率失真编码方法的情况相比，采用所提出的算法可以在720p的300 kbps和CIF的96 kbps的视频会议序列中实现竞争性的主观质量。在德州仪器TMS320DM3x SOC上，ROI视频编码器实现了30fps 1080p视频分辨率的实时性能。

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Novel rate distortion optimized region of interest video coding for embedded video SOCs

In this paper we present a state of the art, practical, realtime, region of interest (ROI) video encoder implemented on the Texas Instruments TMS320DM3x SOC. The proposed algorithm is a novel rate distortion optimized ROI coding algorithm with low complexity making it ideal for implementing on embedded video SOCs with low computational and memory resources while achieving excellent perceptual quality. The proposed solution is a complete solution incorporating ROI processing in the entire video chain from front-end face detection to back-end video compression. It is probably one of the first video capture and compression system implemented on an embedded SOC which relies on specialized rate distortion method for ROI coding using object detection methods from the front end or user inputs. Extensive subjective evaluation has been performed on the proposed algorithm for various resolutions ranging from CIF to 1080p video resolutions at different bitrates for over 300 test cases. Significant subjective quality enhancements have been observed for video sequences over all the different video resolutions at various different bitrates. With the proposed algorithm competitive subjective quality is achieved for video conferencing sequences at 300 kbps for 720p and at 96 kbps for CIF when compared to the case where no ROI based rate distortion methods for coding are used. On the Texas Instruments TMS320DM3x SOC the ROI videoencoder achieved realtime performance for 1080p video resolution at 30 fps.

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来源期刊

2011 IEEE 5th International Conference on Internet Multimedia Systems Architecture and Application

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