tag:blogger.com,1999:blog-9182705499898252496.post6569042239704124200..comments2010-10-30T10:40:57.127-04:00Bill the Lizardhttp://www.blogger.com/profile/09810099093752485841noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-9182705499898252496.post-50961128705049361172010-10-30T10:40:57.127-04:002010-10-30T10:40:57.127-04:00Hello,<br /><br />I have a question regarding the affine transformation with PIL. Since an affine transformation is defined by 6 unknowns I was thinking at defining an initial triangle source and a final one. Basically I&#39;m trying to modify a rectangular shape to fit in a quadrangle, in order to do this I&#39;ve split the initial rectangle in 2 triangles.<br /><br />Using the documentation an affine transformation should map a point x,y into xx,yy by:<br /><br />xx=a*x+b*y+c<br />yy=d*x+e*y+f<br /><br />Using a triangle I was able to find a,b,c,d,e,f. However it seems the PIL affine transform scales the result. The final image is about 4 times larger then what I&#39;ve imposed when I&#39;ve calculated a,b,c,d,e,f.<br /><br />Any help will be appreciated.<br /><br />Thanks,<br /><br />DannyAnonymousnoreply@blogger.com