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# Help with code: image classification

hi

i m a final year BE student working on image processing

i need help on my project

i have divided a 512 x 512 image into 64 blocks

i have extracted features (mean,standard deviation) from one of the 64 blocks

i need to extend this for all the blocks

the for loop is not working

i also need to create a feature library for vistex database

can anyone help pleaseeeeeeeeeee:sad:

thanks in advance

i m a final year BE student working on image processing

i need help on my project

i have divided a 512 x 512 image into 64 blocks

i have extracted features (mean,standard deviation) from one of the 64 blocks

i need to extend this for all the blocks

the for loop is not working

i also need to create a feature library for vistex database

can anyone help pleaseeeeeeeeeee:sad:

thanks in advance

**Re: image classification**

How about sharing the part of the code that is troubling you?

PS: When you post the code, do not forget to wrap it using

... [/ code] tags :)

**code troubling me**

hi

i m a final year BE student working on image processing

i need help on the same

i have acquired 512 x 512 image from a database and divided it into 64 blocks.Our algorithm requires us to genetrate

co occurence histograms for eight angles.

we have extracted features from one block.

we need to extend it for other blocks also and store it in a database.

the following is the code for one amgle(0 degree)

X1=imread(strcat(y,t{i},'.bmp')); imshow(X1) end I2=X1(:,:,1); g=cell(size(64)); for i=1:512 for j=1:512 C(i,j)=I2(i,j); end end g=mat2cell(C,64*ones(8,1),64*ones(1,8)); F=g{3,8}; for i=0:255 gray(i+1)=i; end % decomposing an image using haar wavelet transform [cA1,cH1,cV1,cD1] = dwt2(F,'db1'); A1 = upcoef2('a',cA1,'db1',1); H1 = upcoef2('h',cH1,'db1',1); V1 = upcoef2('v',cV1,'db1',1); D1 = upcoef2('d',cD1,'db1',1); %decomposing complement of an image using haar wavelet transform FC=imcomplement(F); [cA2,cH2,cV2,cD2] = dwt2(FC,'db1'); A2 = upcoef2('a',cA2,'db1',1); H2 = upcoef2('h',cH2,'db1',1); V2 = upcoef2('v',cV2,'db1',1); D2 = upcoef2('d',cD2,'db1',1); %histogram for A1 and D11 (d=1,angle=0) a11=wcodemat(A1,192); d11=wcodemat(H1,192); for i=1:64 for j=1:64 s1=a11(i,j); if(j+1<=64) s2=a11(i,j+1); else s2=0; end v1=d11(i,j); if(j+1<=64) v2=d11(i,j+1); else v2=0; end min1=min(s1,v2); min2=min(s2,v1); alpha=max(min1,min2); if(alpha==min1) His1(i,j)=s1; else His1(i,j)=0; end if(alpha==min2) His2(i,j)=s1; else His2(i,j)=0; end end end %histogram1 min_intensity=min(min(His1)); max_intensity=max(max(His1)); [r1 c1]=size(His1); [r2 c2]=size(His2); init=0; sum=0; for a=0:255 count=0; for i=1:1:r1 for j=1:1:c1 if(His1(i,j)==a) count=count+1; end end end prob(a+1)=count/4096; cum(a+1)=prob(a+1)+init; init=cum(a+1); sum=sum+init; mean1=sum/256; end mean1 std=0; for a=0:255 temp=abs(cum(a+1)-mean1); std=std+temp; end std1=std/256 figure, stem(gray,cum),title('A1 and D11 d=1,angle=0');help me please.........:sad: