show_vector: show a vector in image in size p*q
show_vector2:show the abstract of a vector in image in size p*q
show_vector3:show a vector in image using threshold t in size p*q
show_vector4:show a vector in image regardless the initial. That is, scale directly.
find_largest: find the largest signals with the most information
remove_largest: remove the largest signals with the most information
show_image:show images in [m,n]
icasig_avg:obtain the mean picture and ica component picture for a avi file and the specified frames f = [f1,f2,f3...]
plot_frame:plot the points in X, which is a matrix showing 2 images.
edge33: calculate edge by sobel operator
generate: generate a customized picture
ed_ica: calculate the edge by ICA using the locality window p,q

