计算机技术发展到今天,它的应用范围早已从数值计算、文字处理向信息处理、知识处理更广阔领域拓展.与数值、文字信息相比较,图形、图像更具有直观明了,含义丰富的优点;虽然图形、图像的表示、生成、处理、存储、检索和管理要比数值、文字复杂得多,但计算机处理图形、图像信息,却比传统的手工或机械方式更快速、准确和有效.图形:一般是指由点、直线、曲线、面、文字的结构元素所构成,并经过平移、对称、缩放、旋转、填充、透视、投影等变换而产生出来的画面.图像:一般是指具有层次感、灰度级的图片或照片.当某一图形,经扫描仪存入后,即变成了图像.从图形技术的角度来说,图形与图像两者根本的区别在于:描述它们的数据方式不同 The development of computer technology has expanded its application range from numerical calculation and word processing to the wider field of information processing and knowledge processing.Compared with numerical and textual information, graphics and images are more intuitive and rich in meaning. Graphics, image representation, generation, processing, storage, retrieval and management are much more complicated than numerical values ​​and texts, but computers process graphics and image information more quickly, accurately and efficiently than traditional manual or mechanical methods. Refers to the picture formed by the structural elements of point, line, curve, surface and text, and has been transformed by translation, symmetry, scaling, rotation, filling, perspective, projection, etc. Image: Generally refers to a sense of hierarchy, Grayscale pictures or photos.When a graphic, after the scanner into, it becomes an image.From the graphic technology point of view, graphics and image of the fundamental difference between the two is that: describe their data in different ways