| 摘要 |
<p>PURPOSE:To obtain a deformed picture having a high image resolution, by measuring the space frequency response function MTF of the 2-dimensional reproduced picture and the carrying out the convolution for both the matrix obtained by giving a Fourier conversion to the adverse characteristcs of the function MTF and the original picture to perform the deforming process. CONSTITUTION:The picture information g read out in a rough sampling interval is obtained by the convolution (convolutional integration) of g=f h and via the transmission function h of the original information f. Then the picture information g' which is obtained by giving a resampling to the information g with the picture pitch is obtained in the form of g'=F<-1>(I/H) g via the same information f and the transmission function i respectively. As a result, a deformed picture received a conversion of the picture element concentration with the picture element pitch. In this case, I means the Fourier conversion of the function i, H is the Fourier conversion of the function h, F<-1> is the Fourier adverse conversion operator, and is the convolution operator respectively.</p> |
