và W2 là tần số cao nhất theo hướng x cho ảnh được tạo bởi một mình vật thể S2. Bởi vì chúng ta chỉ có một ảnh bao gồm S1 và S2 nên W1 = W2 và N được xác định theo: | include include include include include include include include include void bit_reversal unsigned int int int void WTS float float int int void FFT float xr float xi float float int int void transpose FILE int int void FFT2D FILE FILE float float unsigned int int int int void main int M M1 m n2 i j ii jj k int Nt n M2 M3 N N1 ind yt unsigned int L float wr wi Do winc Do1 Do2 float win T alpha beta sum1 sum2 float nsq nsqrt FILE fptri fptro fptr float buffi buffo R2 H float xrm xim xrn xin zrt zit mag theta float w h r1 im unsigned char file_name 14 ch ch1 choice file_name1 14 clrscr printf Freq. response can be calculated using standard n printf functions which you can select from a menu if your n printf reply to the following question is negative. n printf Is freq. response provided in a file y or n -- while ch1 getch y ch1 n 150 putch chi switch chi case n printf n Enter of points to be generated . 32x32 -- scanf dx d M1 M1 break case y printf nEnter name of file storing magnitude response-- scanf s file_namei fptr fopen file_namei r fscanf fptr d d 11 01 Mi M M1 1 yt wherey again1 gotoxy 1 yt printf gotoxy 1 yt printf Enter file name for storing impulse response--- scanf s file_name if stricmp file_name 0 stricmp file_name 0 stricmp file_name 0 printf This is a reserved file name. Use some other name. goto again1 gotoxy 1 yt printf ind access file_name 0 while ind gotoxy 1 yt 1 printf gotoxy 1 yt 1 printf File exists. Wish to overwrite y or n -- while ch tolower getch y ch1 n 151 putch ch switch ch case y ind 1 break case n gotoxy 1 yt 1 printf gotoxy 1 yt printf Enter file name -- scanf file_name ind access file_name 0 fptri fopen wb fptro fopen wb buffi float malloc M1 1 sizeof float switch ch1 case n Generating data for IFFT. printf nEnter choice 1 2 etc. n printf 1. Low-pass. n printf 2. High-pass. n printf 3. Band-pass. n printf 4. .
