排序方式: 共有155条查询结果,搜索用时 15 毫秒
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Robert Charles Carter Michael H. Brill 《Journal of the Society for Information Display》2014,22(4):177-186
One of the dimensions of visual perception usable for information display is neutral scale, the achromatic aspect of colour. An existing neutral scale calculation, CIE L*, relates reflected luminance to lightness magnitude and discrimination. But there is no similar international standard calculation for self‐luminous displays. In this article, we introduce a candidate self‐luminous neutral‐scale calculation, to complement CIE L*. We particularly examine its low‐contrast gain, the degree of crispening. This low‐contrast gain is a function of the background luminance, from which the target contrast is an increment or decrement. We demonstrate the use of the calculation to predict matches of neutral scale across different background luminances, and to model the successive thresholds of the Digital Imaging and Communications in Medicine Gray Scale Display Function. Finally, the proposed self‐luminous neutral scale is calculated to show the maximum number of discriminable differences, and the associated optimum background luminance, in representative ranges of display luminance. 相似文献
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针对DICOM3.0标准,系统地分析了DICOM文件格式,阐述了数据元和数据集[1]的格式,并详细介绍在Windows平台下显示DICOM图像的原理,并用3种工具包实现DICOM图像的显示:(1)利用VC++和DCMTK实现医学图像显示和调窗功能;(2)利用VTK功能强大的可视化和图形图像处理类库,实现DICOM图像的处理及图像显示功能;(3)MATLAB环境下实现DICOM医学图像格式的阅读、显示及存储方法. 相似文献
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基于DICOM的数据组织及医学图像序列提取方法研究 总被引:1,自引:0,他引:1
DICOM标准是应用在PACS系统中的一个医学数字成像和通信的国际标准,文章在深入研究DICOM标准的基础上,结合在实际中开发PACS系统的相关经验,对基于DICOM的数据组织层次进行了较为深入的分析,给出了提取DICOM文件中相关属性信息并解析分离图像数据信息的一般方法,最终提取出基于DICOM标准的医学图像序列。 相似文献
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应用协议报文编解码的通用对象化实现方案研究 总被引:1,自引:0,他引:1
在实现专有应用协议(含表示层,应用层)时,应用协议的编码规则遵从于ASN.1或与之类似。而应用报文的编解码传统实现方案众多但效率却各有优劣。这里提出了一种通用的面向对象化的报文编解实现方案,在对数据元素对象化封装的基础上明确采用对象树模型存储编解码过程中各个离散型数据值,更提供了一种对报文任何粒度数据的便捷访问机制,使得通信报文与数据库交互的自动化程度得以提高,在协议分析层面上有利于协议的对象化设计和可管理性。 相似文献
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Filip Jiru Antonin SkochDita Wagnerova Monika DezortovaMilan Hajek 《Computer methods and programs in biomedicine》2013
Magnetic resonance spectroscopic imaging (MRSI) involves a huge number of spectra to be processed and analyzed. Several tools enabling MRSI data processing have been developed and widely used. However, the processing programs primarily focus on sophisticated spectra processing and offer limited support for the analysis of the calculated spectroscopic maps. In this paper the jSIPRO (java Spectroscopic Imaging PROcessing) program is presented, which is a java-based graphical interface enabling post-processing, viewing, analysis and result reporting of MRSI data. Interactive graphical processing as well as protocol controlled batch processing are available in jSIPRO. jSIPRO does not contain a built-in fitting program. Instead, it makes use of fitting programs from third parties and manages the data flows. Currently, automatic spectra processing using LCModel, TARQUIN and jMRUI programs are supported. Concentration and error values, fitted spectra, metabolite images and various parametric maps can be viewed for each calculated dataset. Metabolite images can be exported in the DICOM format either for archiving purposes or for the use in neurosurgery navigation systems. 相似文献
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WWW和DICOM网关在计算机中的应用 总被引:1,自引:0,他引:1
讨论了WWW与DICOM网关的必要性及其实现方法和实现的结果,提出了一种新的医生与医学图像设备(包括CT、MRI、超声等设备)及PACS的交互方式。指出:WWW与DICOM网关是专用标准与通用标准之间的转换,实现这一转换将有利于医疗信息系统的集成及实现远程医疗信息系统。 相似文献