TY - GEN
T1 - Image registration in hough space using gradient of images
AU - Shams, Ramtin
AU - Barnes, Nick
AU - Hartley, Richard
PY - 2007
Y1 - 2007
N2 - We present an accurate and fast method for rigid registration of images with large non-overlapping areas using a Hough transformation of image gradients. The Hough space representation of gradients can be used to separate estimation of the rotation parameter from the translation. It also allows us to estimate transformation parameters for 2D images over a 1D space, hence reducing the computational complexity. The cost functions in the Hough domain have larger capture ranges compared to the cost functions in the intensity domain. This allows the optimization to converge better in the presence of large misalignments. We show that the combination of estimating registration parameters in the Hough domain and fine tuning the results in the intensity domain significantly improves performance of the application compared to the conventional intensity-based multi-resolution methods.
AB - We present an accurate and fast method for rigid registration of images with large non-overlapping areas using a Hough transformation of image gradients. The Hough space representation of gradients can be used to separate estimation of the rotation parameter from the translation. It also allows us to estimate transformation parameters for 2D images over a 1D space, hence reducing the computational complexity. The cost functions in the Hough domain have larger capture ranges compared to the cost functions in the intensity domain. This allows the optimization to converge better in the presence of large misalignments. We show that the combination of estimating registration parameters in the Hough domain and fine tuning the results in the intensity domain significantly improves performance of the application compared to the conventional intensity-based multi-resolution methods.
UR - http://www.scopus.com/inward/record.url?scp=44949184759&partnerID=8YFLogxK
U2 - 10.1109/DICTA.2007.4426800
DO - 10.1109/DICTA.2007.4426800
M3 - Conference contribution
SN - 0769530672
SN - 9780769530673
T3 - Proceedings - Digital Image Computing Techniques and Applications: 9th Biennial Conference of the Australian Pattern Recognition Society, DICTA 2007
SP - 226
EP - 232
BT - Proceedings - Digital Image Computing Techniques and Applications
T2 - Australian Pattern Recognition Society (APRS)
Y2 - 3 December 2007 through 5 December 2007
ER -