What type of images are you dealing with and what kind of classification you want? Please tell us something more about so that we can make meaningful suggestions.

Dear Dr Parul,

i am still in beginning so any database will be welcome. 

I try to apply LDA OR SVM classification 

i  worked on birds database in the following link

http://www-cvr.ai.uiuc.edu/ponce_grp/data/

Thanks 

Hi 

You may find many classifier for  classification purpose in image processing.

After feature extraction  next task is to representation of   those images i.e creating knowledge base of those images. Finally  you divide your data set into   testing data set and training data set .

 For training data  what u  hv already done is enough( feature extraction) , then match the images from u r testing class images to training class.

simple classifier is Knn.

 the below link is useful ...

 http://www.jars1974.net/pdf/12_Chapter11.pdf

Dear Ahmed,

What do you want identify in the image?, How many images do you have?

Do you have a control image? and Finally, some images have similar behavior?

Please, tell me more about your work

Best regards

Use SVM.

Hi Chethankumar Bm,

thanks for chapter but my problem is i dont know how can i construct train and test vector using SIFT featuer

Dear Juan Carlos Martinez E., 

I Have images called birds i get it from the following link

 http://www-cvr.ai.uiuc.edu/ponce_grp/data/  

i want classify them using SURF , using any classification method (in matlab) my problem is i cant figure how can i construct test and train vector from Extracted Surf features.

thanks

Hello,

Create a matrix for training data with number of samples(birds) as rows and its SURF features as columns. then you use this training data matrix into the classifier function.

For better understanding with explanation see,

http://www.mathworks.com/help/stats/support-vector-machines-svm.html#bsr5o09

You can learn from the Matlab explanation about how to train your dataset for classification. 

 Rekha Jayaprakash,

I did that but i get error that  training matrix  must be numeric value

Note I build train matrix every ow represent image and ever coulmn  containt descriptor vector.

thank,