TY - GEN
T1 - A coarse-to-fine auto-focusing algorithm for microscopic image
AU - Liu, Yung Chun
AU - Hsu, Fu Yu
AU - Chen, Hsin Chen
AU - Sun, Yung Nien
AU - Wang, Yi Ying
PY - 2011
Y1 - 2011
N2 - Auto-focusing is an important step in development a computer-aided evaluation system for diagnostic microscope. An auto-focusing algorithm can identify the best focus reliably and objectively, and prevents the tedious and time consuming steps of manual focusing. In this paper, a coarse-to-fine auto-focusing method is proposed based on a multi-resolution scheme which locates the focusing range by quadratic polynomial fitting in low resolution and achieves accurate focal point by using binary search in fine resolution. An algorithm was developed to identify the focal point under multiple image resolution with the Sum of Modified Laplacian (SML) as the focusing value. The main contribution of this system is to reduce the auto-focusing time. Comparing with the conventional binary search, the coarse-to-fine method only needs half of the time to accomplish auto-focusing. Using the proposed technique, the efficiency of auto-focusing system has been significantly improved.
AB - Auto-focusing is an important step in development a computer-aided evaluation system for diagnostic microscope. An auto-focusing algorithm can identify the best focus reliably and objectively, and prevents the tedious and time consuming steps of manual focusing. In this paper, a coarse-to-fine auto-focusing method is proposed based on a multi-resolution scheme which locates the focusing range by quadratic polynomial fitting in low resolution and achieves accurate focal point by using binary search in fine resolution. An algorithm was developed to identify the focal point under multiple image resolution with the Sum of Modified Laplacian (SML) as the focusing value. The main contribution of this system is to reduce the auto-focusing time. Comparing with the conventional binary search, the coarse-to-fine method only needs half of the time to accomplish auto-focusing. Using the proposed technique, the efficiency of auto-focusing system has been significantly improved.
UR - http://www.scopus.com/inward/record.url?scp=84860400641&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84860400641&partnerID=8YFLogxK
U2 - 10.1109/ICSSE.2011.5961939
DO - 10.1109/ICSSE.2011.5961939
M3 - Conference contribution
AN - SCOPUS:84860400641
SN - 9781612844718
T3 - Proceedings 2011 International Conference on System Science and Engineering, ICSSE 2011
SP - 416
EP - 419
BT - Proceedings 2011 International Conference on System Science and Engineering, ICSSE 2011
T2 - 2011 International Conference on System Science and Engineering, ICSSE 2011
Y2 - 8 June 2011 through 10 June 2011
ER -