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DCT transform coding of stereo images for multimedia applications

机译:多媒体应用的立体声图像的DCT变换编码

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摘要

One form of multimedia finding increasing utility in factory automation is stereo imaging. Its uses include remote operation, telepresence, and object positioning. Stereo imaging, with doubled frames, requires high data-rate collection and transmission. Image compression techniques can be utilized to reduce the transmission bandwidth and/or storage space requirements of the stereo pair. This paper develops image compression techniques specific to stereo imaging and compares the performance with nonstereo methods. Disparity compensated residual image coding exploits the redundancy between the two images in a stereo pair. Stereo residuals possess special features that can be exploited within a discrete cosine transform (DCT) image coding framework. Use of these features results in several decibels of performance enhancement across a range of scene types. This approach provides its best performance below 0.75 b/pixel bitrate for 8-b grayscale imagery and below 2 b/pixel for 24-b color imagery.
机译:多媒体发现在工厂自动化中越来越有用的一种形式是立体成像。它的用途包括远程操作,远程呈现和对象定位。具有双帧的立体成像需要高数据速率的收集和传输。可以利用图像压缩技术来减少立体声对的传输带宽和/或存储空间要求。本文开发了特定于立体成像的图像压缩技术,并将其性能与非立体方法进行了比较。视差补偿残差图像编码利用了立体声对中两个图像之间的冗余。立体声残差具有可以在离散余弦变换(DCT)图像编码框架中利用的特殊功能。使用这些功能可以在多种场景类型中提高几分贝的性能。对于8-b灰度图像,此方法可提供0.75 b /像素位速率以下的最佳性能,而对于24-b彩色图像,此方法可提供最佳性能。

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