According to optical transferfunction, degree of modulation and apperceive degree of space frequency vision vs object image, TIFF grayscale scenograph is made.
根据光学传递函数、调制度和空间频率视觉及对物象的感知程度，制作TIFF格式透视灰度图。
2
Method Modulationtransferfunction (MTF) was used to analyze the spatial frequency transfer characteristics of ct and MRI.
调制传输函数可对线性影像系统的频率传输特性进行描述。
3
The result indicates that the ratio of the detectivities is approximately equal to the modulationtransferfunction of SPRITE detectors in the region of low spatial frequency, which is near 1.