function?cps?=?crosspowerspectrum（in1in2）
%?USAGE?:?cps?=?crosspowerspectrum（in1in2）
%
%?function?to?calculate?the?PHASE-CORRELATION?hence?function?name?may?be?a?bit?misleading!!
%
%?Adam?Wilmer?3-9-02

F1?=?fft2（in1）;
F2?=?fft2（in2）;

%?Create?phase?difference?matrix
pdm?=?exp（i*（angle（F1）-angle（F2）））;

%?turn?into?cross?phase-correlation
cps?=?real（ifft2（pdm））;

%?had?problems?with?NaN‘s?coming?out?so?check?this
if（mean（mean（isnan（cps）））>0.95）
????disp（‘PROBLEM?ALERT:?phasecorrelation?contains?a?lot?of?NaNs?（check?FFTs?exist?as?they?cannot?cope?with?certain?inputs?for?some?reason）‘）
????return
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????3486??2002-09-02?17:03??imlogpolar.m
?????文件???????62482??2002-11-05?11:29??lena2.bmp
?????文件???????66614??2002-11-05?11:55??lena_org.bmp
?????文件????????2044??2002-10-12?14:50??parse_inputs.m
?????文件????????1187??2002-10-22?11:10??readpgm.m
?????文件????????2269??2002-11-06?14:05??transformImage.m
?????文件????????1287??2002-11-04?14:07??window1d.m
?????文件????????2511??2002-10-30?11:06??window2d.m
?????文件????????1716??2002-10-31?14:44??zeropad.m
?????文件????????2930??2002-10-22?11:00??help\help_fm.html
?????目錄???????????0??2002-10-21?11:54??help\
?????文件?????????630??2002-11-07?15:14??crosspowerspectrum.m
?????文件????????7404??2002-10-31?13:49??fft_resize_test.m
?????文件???????22519??2002-11-07?15:28??fm_gui.m
?????文件???????25872??2002-11-07?15:32??fm_guifun.m
?????文件?????????577??2002-11-07?13:00??fm_parse_inputs.m
?????文件????????9108??2002-11-07?15:26??fourier_mellin.m
?????文件?????????306??2002-10-22?16:27??hipass_filter.m
?????文件?????????328??2002-04-25?17:45??image_scale.m