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hog+svm: the size of positive image must be 64*128? any other choice?

Iam trying to train my own SVM using features extracted using HoG. Now i have one question. should the size of positve image must be 64x128? if the positive pictures are small ,and i can resize them to 64*128. however,the targets are wide.how can i build the positive picture?

image description

hog+svm: the size of positive image must be 64*128? any other choice?

Iam trying to train my own SVM using features extracted using HoG. Now i have one question. should the size of positve image must be 64x128? if the positive pictures are small ,and i can resize them to 64*128. however,the targets are wide.how can i build the positive picture?

picture? Dose the positive picture only include the target?

thanks a lot. image description