facing error in isa()

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Usama Javed
Usama Javed 2012-1-5
i am writing this gabor filter code and when i run it than an error comes which is as follow....
% gabor main interface
clc
img = imread('\C:\Users\Asad\Documents\MATLAB\CE.bmp');
I=rgb2gray(img);
info(I)
[G,gabout] = gaborfilter1(I,.9,10,16,pi/3);
% gaborfilter1.m
function [G,gabout] = gaborfilter(I,Sx,Sy,f,theta);
if isa(I,'double')~=1
Error:--
??? Input argument "I" is undefined.
Error in ==> gaborfilter at 5
if isa(I,'double')~=1
I = double(I);
end

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采纳的回答

Walter Roberson
Walter Roberson 2012-1-5
This seems odd, unless you tried to run gaborfilter by itself instead of running the "gabor main interface" file.

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