Image feature extraction Python skimage blob_dog
Please read through the scikit documentation that is found here and I am assuming that you have gone through the method through which it calculates blobs in the images. If not the link is here. It return the 2D array of arrays with 3 values in each array, giving coordinates and std.deviation of Gaussian of the blob found. The length of the array returned is the number of blobs it has found in the image. So eliminating elements from that array by resizing it, is a wrong way of approach and may eliminate the features which you might find important.