TY - GEN
T1 - An error bound of relative image blur analysis
AU - Shih, Sheng Wen
AU - Kao, Po Shan
AU - Guo, Wei Shin
PY - 2004
Y1 - 2004
N2 - A lower bound of the relative image blur estimation error of a pair of images is derived analytically in this paper. This error analysis result shows that the optimal camera parameters for obtaining the most accurate depth from defocusing (DFD) results are strongly related to the object depth. Therefore, DFD methods using only two images usually cannot achieve the most accurate depth estimates. Instead of using only two images, a sequence of images focused at different depths should be provided in order to obtain accurate DFD results. With some prior knowledge of the object depth, the derived error bound is used to select optimal image pairs from the input image sequence for computing DFD. Real experimental results show that the resulting DFD method outperforms both a DFF method and a DFD method using two images.
AB - A lower bound of the relative image blur estimation error of a pair of images is derived analytically in this paper. This error analysis result shows that the optimal camera parameters for obtaining the most accurate depth from defocusing (DFD) results are strongly related to the object depth. Therefore, DFD methods using only two images usually cannot achieve the most accurate depth estimates. Instead of using only two images, a sequence of images focused at different depths should be provided in order to obtain accurate DFD results. With some prior knowledge of the object depth, the derived error bound is used to select optimal image pairs from the input image sequence for computing DFD. Real experimental results show that the resulting DFD method outperforms both a DFF method and a DFD method using two images.
UR - http://www.scopus.com/inward/record.url?scp=10044276237&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=10044276237&partnerID=8YFLogxK
U2 - 10.1109/ICPR.2004.1333715
DO - 10.1109/ICPR.2004.1333715
M3 - Conference contribution
AN - SCOPUS:10044276237
SN - 0769521282
T3 - Proceedings - International Conference on Pattern Recognition
SP - 100
EP - 103
BT - Proceedings of the 17th International Conference on Pattern Recognition, ICPR 2004
A2 - Kittler, J.
A2 - Petrou, M.
A2 - Nixon, M.
T2 - Proceedings of the 17th International Conference on Pattern Recognition, ICPR 2004
Y2 - 23 August 2004 through 26 August 2004
ER -