splitImage

Just specify three argument:

aIMGpath = 'D:\....png';
nRough = 8; % roughly how many pages you want to split
graceOffset = 40; % a bi-directional offset at both sides of cut-line to search for a minimum of gussian blur(sigma = 7 vertical lines) of deviation of each line's piexles so as to make a perfect cut to avoid anoying cut-in-lines.