基于像素聚集形态的喷墨打印面积计算方法  

Calculation Method of Inkjet Printing Area Based on Pixel Clustering

作　　者：田培娟[1] 余节约[1] 丁建浩[1] TIAN Peijuan;YU Jieyue;DING Jianhao(School of Media&Design,Hangzhou Dianzi University,Hangzhou 310018,Zhejiang,P.R.China)

机构地区：[1]杭州电子科技大学人文艺术与数字媒体学院,浙江杭州310018

出　　处：《影像科学与光化学》2020年第5期795-800,共6页Imaging Science and Photochemistry

基　　金：浙江省基础公益研究计划项目(LGG20F020002)资助。

摘　　要：本文提出一种基于1位tiff图像的像素聚集形态预测喷墨打印面积的方法。针对指定的打印设备和墨水,先通过显微检测获得单一墨点半径,再读取含各灰度梯级的1位tiff图像,进一步离散成更加细微的栅格,计算每一细微栅格到值为0的像素中心的距离,根据距离是否小于墨点的半径,来判定该栅格是否着墨,再统计着墨栅格所占的比例来获得网点面积。经过实验测试,发现采用计算的方法预测喷墨制版的网点面积,预测误差能够满足印版网点检测的精度要求,速度快,且可避免人工测量过程的操作误差,有利于快速、准确地实现印版网点面积的线性化校正。This paper proposed a method to predict the inkjet printing area based on pixel clustering of 1-bit tiff image.For the selected printing equipment and ink,firstly,use the micro measuring system to obtain the single ink radius,then read the 1-bit tiff image with each gray level,separate into more subtle grids and calculate the distances from each tiny grid to the center of the pixel with a value of 0,and then determine whether the grid is inked based on whether the distances calculated is shorter than the ink dot radius,finally,count the dot area by calculating the percentage of inked grids.The experimental results show that applying this method to forecast the dot area of inkjet plate,the forecasting error can meet the accuracy requirements of printing plate dot detection,the speed increases,and the operation error that may exist in the process of manual measurement is avoided.All in all,the method is beneficial to achieving linear correction of dot area fast and accurately.

关 键 词：喷墨打印 制版 像素聚集形态 网点面积 

分 类 号：TS853.5[轻工技术与工程] TP391.41[自动化与计算机技术—计算机应用技术]