【摘要】 本文选择了西藏阿里地区二叠纪几个筵及非(竹蜓)有孔虫化石作为研究对象。在显微镜下薄片鉴定的基础上,再应用电子计算机数字图象处理新技术,对化石照片数字化,输入计算机作图象增强及信息萃取等处理,从而去掉原照片中的干扰因素,使原照片中的清晰度增强,突出化石某些重要鉴定特征。尤其是假彩色处理图象效果更加明显。它不仅可以提高化石鉴定的准确性,尤其建立新属、种时,可提高其可靠程度。此方法尚在尝试,但对微体古生物有孔虫类化石的鉴定,已显示了一定的应用意义。更多还原

【Abstract】 Application of computer for image processing to the identification of microfossils makes the picture, especially the unclear structure, clearer. Such identification is more precise, reliable and especially important in establishing new genera and species.Two genera, Rugosomaclay and Aulanina, selected for study are shown in both blackwhite and color digital image processing.Rugosomaclay: Rugae of tectum in spirotbeca are prominent.Aulalina: Septa and tumourous accumulations are prominent.These prominent features are the main factors in establishing the two genera. The preliminary study has shown its significance in micropalaeontological study. So if is worth to make more tests.The method and procedure of digital image processingProcedure: digitize the picture of foraminifera and process it in computer or computer for images processing. Program may be edited by oneself or specific image processing software applied. We use image processing operating system IPOS/101 of (STC/I~2S) 101 system to digitize and process.Method: statistically analyze every digital image of foraminifera, to produce histogram; the structural charateristics should be found out and enhanced. Then, adopting various measures, edit processing directive flowchart. In using various directives, choose proper parameter to control the effect strengthened and get a satisfactory image.Lastly, take a photo of the black-white or color image on the screen of the image monitor, or save the image in computer (or on the tape).In processing experiment, the methods, such as pseudocolour density division, plim linear mapping, and track ball linear mapping are all useful. The strengthening measures such as logarithmic mapping, histogr(?)m equalization and scale are effective too.It’s worth to point out that no measure can suit all conditions of the enhanced structural feature. It gives prominence to some information but always weakens the other. Therefore, a comprehensive processing method may be adopted. A program processing of the comprehensive process may be edited in certain flowchart with different methods, and the addition of the enhanced image or logical operation may be accomplished. A better photo of the structural feature will be taken at last.更多还原