I stitch a panorama with 12 rectilinear images by panotools,but the result pano always like snake,and if use 11 or less than 11 of the source
images,it is good as a part of complete 360 pano.And i also write a "straighten" programe for these unlogical position parameters,but seems useless.
some of optimize parameters.
w2000 h1000 f0 v42 y0 p0 r0
w2000 h1000 f1 v360