error is : Subscripted assignment dimension mismatch.

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Ushna Asif
Ushna Asif 2015-11-14
回答： Dima Lisin 2015-11-23
this is my code for extraction of feature from folder having three sub folders but i am giving error at line trainingFeatures(featureCount,:)= ..... error is : Subscripted assignment dimension mismatch.
trainingFeatures = zeros(size(training,2)*training(1).Count,1008);
featureCount = 1;
for i=1:size(training,2)
for j = 1:training(i).Count
trainingFeatures(featureCount,:)= extractHOGFeatures(read(training(i),j));
trainingLabel{featureCount} = training(i).Description;
featureCount = featureCount + 1;
end
personIndex{i} = training(i).Description;
end

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采纳的回答

Dima Lisin
Dima Lisin 2015-11-23
You may be getting this error because there may be different numbers of images in each imageSet. The easiest thing to do here is to make trainingFeatures a cell array.

更多回答（1 个）

Image Analyst
Image Analyst 2015-11-14
You say size(training,2) indicating training is a 2D array, but then you later say training(i).Description indicating it's a 1-D array of structures. Before the loop, what does it say if you do this:
class training
whos training
size(training)
  2 个评论
Ushna Asif
Ushna Asif 2015-11-16
I'm getting this outputs
>>class training
ans =
char
>> whos training
Name Size Bytes Class Attributes
training 1x3 9682 imageSet
>> size(training)
ans =
1 3
Image Analyst
Image Analyst 2015-11-16
Sorry, I don't have the Computer Vision System Toolbox so I can't test anything with imageset variables. Perhaps Dima will answer.

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