Geometry alignment test chart card introduction

　　DNP test card In the light background, there are 25 horizontal lines and 15 vertical lines. The width of the grid line is 0.13% of the width of the image. The diameter of the large circle is 82% of the image height, and the diameter of the 5 small circles is 27.4% of the image height. Inside the large circle line, three resolution wedge to 0 °, 90 ° and 135 ° to decorate, corresponding to the 2-12 MHZ signal frequency (tag to 10 MHZ or end of the 800 TV line).

　　The test card is designed for the alignment and inspection of the electronic camera. The circular line allows for a rough visual evaluation of the geometry. The grid line is used to adjust the positioning error. Wedges are used to evaluate resolution.
 

　　几何对准定标测试图卡简介

　　dnp测试图卡设计用于电子照相机的操作对准和检查.圆形线允许对几何形状进行粗略的视觉评估.网格线用于调整定位误差.楔形用于分辨率的评估。

　　分辨率测试卡在浅色背景上布置有25条水平线和15条垂直线的网格结构。 网格线的宽度为图片宽度的0.13%。 大圆形线的直径为图像高度的82%，5个小圆形线的直径为图像高度的27.4%。 在大圆形线内部，3个分辨率楔形以0°，90°和135°布置，对应于2-12MHz的信号频率(标记以10MHz或800TV线结束)。