图像采集。测量是基于图像中物体所表现出来特征。图像处理算法通常利用图像中包含的信息进行分类，如边、面或形状。不同类型的机器视觉算法，影响并提取一种或多种信息。
边缘检测及其衍生技术，如耙子，同心耙，和辐条（rakes, concentric rakes, and spokes）用于图像中所表现出了边。他们可以精确地定位物体边缘的位置。可以使用边缘检测来进行部件宽度一类的测量， 这一技术被称为卡尺。也可以综合多条边来计算交点、投射、适合的园或椭圆。(Image acquisitionThe measurement is based on the features of the object in the image. Image processing algorithms usually use the information contained in the image to classify, such as edges, surfaces, or shapes. Different types of machine vision algorithms affect and extract one or more information.
Edge detection and its derivative technology, such as concentric rake, rake, and spokes (rakes, concentric rakes, and spokes) for the image shown in the side. They can accurately locate the position of the edge of the object. The edge detection can be used to measure the width of a component, which is called a caliper. It is also possible to integrate multiple edges to calculate the intersection, projection, suitable orchards or ellipses.)