JPEG DATA COMPRESSION--A COMPREHENSIVE ASSESSMENT

图像压缩技术一直被提倡作为一种手段来缓解 预计将产生大量数字图像数据带来的问题 由未来的放射科产生。许多与 图像压缩在放射学中的应用仍有待研究。在视野中 联合图像专家组(JPEG)目前的工作情况 国际标准化组织(ISO)将建立一个 通用图像压缩标准，我们相信它是 在这个时候重要的是评估标准的适用性 算法对射线照相图像进行处理。在这个项目中，我们建议 数字化胸部压缩标准算法的优化 电影，然后测量诊断性能对 此优化算法的压缩程度。研究设计 将使我们不仅能够通过配对来评估性能差异 比较，但也将定义趋势，如果它们存在，并通过 回归程序将允许我们评估 该算法的“压缩/性能”曲线。

Image compression techniques have been advocated as a means to alleviate problems caused by the large volume of digital image data expected to be generated in future radiology departments. Many issues related to the use of image compression in radiology remain to be investigated. In view of the current efforts of the Joint Photographic Experts Group (JPEG) of the International Organization for Standardization (ISO) to establish a general purpose image compression standard, we believe that it is important at this time to assess the applicability of the standard algorithm to radiographic images. In this project, we are proposing to optimize the standard algorithm for the compression of digitized chest films and then to measure the dependence of diagnostic performance on the degree of compression for this optimized algorithm. The study design will enable us not only to assess differences in performance by paired comparisons, but will also define trends, if they exist, and through regression procedures will permit us to evaluate the "compression/performance" curve for this algorithm.