Green R J, Perkins W J, Piper E A, Stenning B F
J Biomed Eng. 1979 Oct;1(4):240-6. doi: 10.1016/0141-5425(79)90158-4.
The processing and analysis of images in a computer often requires the selection of particular features of a complex image for more detailed study. Sometimes such decisions are empirical, in which case it would be extremely difficult to describe a rigorous algorithm for detecting these features automatically in a computer. In this situation graphic tablets can be very useful as they allow an operator to use experience in deciding which features are to be transferred into a computer. A tablet is described which uses a conductive glass plate and pencil probe. A number of subroutines are available in a general purpose program for conventional processing, calculation and displays to be effected by simple option selection on the tablet for specific applications in cell growth, modeling and three dimensional reconstruction of serial sections, special programs were developed which could include appropriate subroutines. The categorisation of subsections by an operator was particularly useful in allowing different methods of analysis and display to be applied to each. For example they could be displayed separately or given different dentisy levels by choosing the appropriate option in the program.
计算机中图像的处理与分析常常需要从复杂图像中选取特定特征进行更细致的研究。有时此类决策是凭经验做出的，在这种情况下，要描述一种能在计算机中自动检测这些特征的严格算法极为困难。在此情形下，图形输入板会非常有用，因为它能让操作人员凭借经验来决定哪些特征要输入到计算机中。本文介绍了一种使用导电玻璃板和铅笔探头的图形输入板。通用程序中有许多子程序可用于常规处理、计算和显示，通过在图形输入板上简单选择选项就能实现特定应用，如细胞生长、建模以及连续切片的三维重建，还开发了能包含适当子程序的特殊程序。操作人员对各部分进行分类在允许对每一部分应用不同分析和显示方法方面特别有用。例如，通过在程序中选择合适的选项，它们可以单独显示，或者赋予不同的密度级别。
