Error 'Undefined variable "hisFtrs" or class "hisFtrs".'

2019 2 27
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更新时间：2019 2 28
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histFtrs = cell(6,1);
start = 1;
for i = 1 : 6
histFtrs{i} = hist(idx(start:start+size(features{i},2)),nWords)';
%normalize
histFtrs{i} = histFtrs{i}./sum(hisFtrs{i});
end
I am getting error as
Undefined variable "hisFtrs" or class "hisFtrs".
Error in checker (line 30)
histFtrs{i} = histFtrs{i}./sum(hisFtrs{i});
If anyone can help

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 采纳的回答

Alex Mcaulley
Alex Mcaulley 2019-2-27

0 个投票

At least in those lines of code you haven't defined hisFtrs variable. Can it be histFtrs?? If this is not the answer please provide the full code

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Prayag Bhatia
Prayag Bhatia 2019-2-28
im{1} = rgb2gray(imread('C:\Users\prayag\check_500.jpg')) ;
im{2} = rgb2gray(imread('C:\Users\prayag\real2.jpg')) ;
im{3} = rgb2gray(imread('C:\Users\prayag\real3.jpg')) ;
im{4} = rgb2gray(imread('C:\Users\prayag\real4.jpg')) ;
im{5} = rgb2gray(imread('C:\Users\prayag\fake1.jpg')) ;
im{6} = rgb2gray(imread('C:\Users\prayag\fake2.jpg')) ;
detectFeatures = @(in) {detectSURFFeatures(in)};
regions = cellfun(detectFeatures,im);
extractAndTransposeFeatures = @(in,pts) extractFeatures(in,pts)';
features = cellfun(extractAndTransposeFeatures,im,regions,'UniformOutput',false);
figure;
for i = 1 : 6
subplot(3,3,i);
imshow(im{i});
hold on;
plot(regions{i});
end
%%Create a visual vocabulary with 20 words
nWords = 20;
%use kmeans for constructing the vocabulary.
[idx,centers] = kmeans([features{:}]',nWords);
%%BoF Feature Representation
histFtrs = cell(6,1);
start = 1;
for i = 1 : 6
histFtrs{i} = hist(idx(start:start+size(features{i},2)),nWords)';
%normalize
histFtrs{i} = histFtrs{i}./sum(hisFtrs{i});
end
%display histograms
figure;
for i = 1 : 6;
subplot(3,3,i);
bar(histFtrs{i});
end
%%Partition images into 2 sets using kmeans
idx = kmeans([histFtrs{:}]',2) ;
Here is the full code.
Alex Mcaulley
Alex Mcaulley 2019-2-28
As I said before, your error is a typo in the line
histFtrs{i} = histFtrs{i}./sum(hisFtrs{i});
It should be:
histFtrs{i} = histFtrs{i}./sum(histFtrs{i});
Are you having more errors after changing this line?
Prayag Bhatia
Prayag Bhatia 2019-2-28
Thanks Buddy , was a very silly mistake on my part.

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