对数频率反差测试卡_深圳市赛麦吉图像技术有限公司

    Imatest测试卡

      对数频率反差测试卡

      品牌:Imatest/Sine Image
      型号: LOGFCONT-IJ
      尺寸:610mmx330mm
      类型:反射式

    分辨率测试卡对数频率反差测试卡简介

    1、这张测试卡采用高品质半光泽纸喷墨打印。

    2、纸张尺寸为24"×13"(610mmx330mm)

    3、测试卡有效面积为16.75"×13"(426x330mm)

    对数频率反差测试卡1对数频率反差测试卡2

    The chart is printed with ink-jet process on high quality semi-gloss paper

    The paper size is 24

    The chart active area is 16.75
     

    分辨率测试卡Log Frequency Contrast Chart(对数频率反差测试卡)检测信号处理的效果——降低噪声和锐化——通过图像系统性能,在水平轴上区分空间频率(对数频率随x增大而增大)以及在垂直轴向上区分调制信号。调制信号与图像的高h关系为与(y/h)2成正比。因为Log F-Contrast 测试卡的结果是正弦曲线,其调制相当于SFR或者MTF。

    Resolution test card  Log Frequency Contrast Chart Detects the effect of signal processing - Reduces noise and sharpening - distinguishes the spatial frequency (logarithmic frequency increases with x) on the horizontal axis by image system performance, And distinguishing the modulation signal in the vertical axis. The high h relationship between the modulated signal and the image is proportional to (y / h) 2. Since the result of the Log F-Contrast test card is a sinusoidal curve, the modulation is equivalent to an SFR or MTF.

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