激光打印与监视器显示图像一致性的测试方法探讨

Test Method about the Consistency between Laser Printed Images and Monitor Displayed Images

目的 探讨测试激光打印图像与监视器图像一致性的临床实用方法。方法运用密度仪和光度计分别对激光打印的SMPTE图卡和监视器显示的SMPTE图卡进行灰阶密度和亮度测量 ,并绘制出相应的密度和灰阶亮度曲线 ,进行分析比较。调整打印机打印参数值 ,使两种图卡各显示指标达到一致。结果在标准或改变窗宽、窗位情况下 ,从两者SMPTE图卡中测得的密度值和灰阶亮度值绘制的曲线走行基本一致 ,图卡显示指数相同。结论运用SMPTE测试图卡测试激光打印图像与监视器显示图像的一致性 ,方法简便易行 ,客观可靠。

Objective To study the practical test method on the consistency between laser printed images and monitor displayed images. MethodsTo measure the density and brightness of laser printed and monitor displayed SMPTE card respectively using densimeter and photometer,then to make corresponding curves and compare them.To modulate laser printer parameters to reach the index consistency between the two different SMPTE cards.Results To measure the density and brightness of SMPTE card respectively after changing width and level and make corresponding curves,the two group curves are fundamentally same.Conclusion It is a feasible and reliable method to test the consistency between laser printed and monitor displayed images with the help of SMPTE card. [