CSD Ph.D. Student
Wean Hall 8205
2.I use two points from the image to get the planar
One point determines " l". The other point determines " a" and " b".
More points will get much more precise value by a least squares fit.
3.However, in order to use the algebraic methods the
paper presented, some transformations should
be made , for the "l" I got is different from the standard format in criminisi's paper .It means that
the world origin is translated in the reference plane. So the H I got should be [a1Vx b1Vy l1],while
Criminisi's H is [aVx bVy l]. "l" can be caculated but " a" and "b " is unknown. To compute the Hz,
we need to know "a" and "b" although "l" and "Alpha" are known now.I got " a" and "b " by the
following way: [aVx bVy l] = s[a1Vx b1Vy l1]Txy. "s " is a scale. Txy is the matrix of transformation.
Txy can be caculated by [a1Vx b1Vy l1] and "l" .
4.To make the program more powerful, I provided several
kinds of constraints the user can specify
during modeling process. Combined with those constraints, we can caculate the position of a point
when we can't find its corresponding point in the reference plan,like the positoin of the book in the
second recovered model.Besides, by providing this function,the program can deal with some paintings
in which the projective relationships are not very well maintained by the painter.
5.I use Visual C++ 6.0 and Open GL to do the coding. (roughly 4,000 lines )
2.Using texture synthesis for texture retouching.
Colonanade with a View
of Rome ;
Box and Book ;