锯齿测试图卡TE99宽动态范围Multi Burst Test Chart。The TE99 is designed to measure frequency response of the modulation depth of electronic cameras. A line raster is arranged in the center of the test chart which produces frequencies of 0.5 to 10 MHz in the output of the TV camera. Bar rasters are located in the corners of the test chart and produce frequencies of 0.5 and 5 MHz.
Multi Burst Test Chart (High-Class in Mega Cycle Chart)Stepchart测量可以产生最详细的测试结果,但噪音也可以在Colorcheck,SFR和uniformity中进行测量。 噪声与传感器像素面积有很强的关系。它在数码单反相机中非常低,这类相机的像素至少5X5微米。但是,它在使用小传感器的紧凑型数码相机上变得非常恶劣,特别是在高***速度的情况下。当然噪声也受传感器技术和制造质量的影响。典型的降噪软件的能通过平滑图像***降低随机噪声,但不能包括对比度变化很大的边界附近区域。这种技术很有效,但它会降低图像质量,丢失图像中低对比度部分的细节。