Automatic section thickness determination using an absolute gradient focus function.
Automatic section thickness determination using an absolute gradient focus function.
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DOI:
10.1111/j.1365-2818.2012.03669.x
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发表时间:
2012-12
影响因子:
2
通讯作者:
Mouton PR
中科院分区:
文献类型:
--
作者:
Elozory DT;Kramer KA;Chaudhuri B;Bonam OP;Goldgof DB;Hall LO;Mouton PR
Quantitative analysis of microstructures using computerized stereology systems is an essential tool in many disciplines of bioscience research. Section thickness determination in current non-automated approaches requires manual location of upper and lower surfaces of tissue sections. In contrast to conventional autofocus functions that locate the optimally focused optical plane using the global maximum on a focus curve, the present study identified by two sharp “knees” on the focus curve as the transition from unfocused to focused optical planes. Analysis of fourteen gray-scale focus functions showed, the thresholded absolute gradient function, was best for finding detectable bends that closely correspond to the bounding optical planes at the upper and lower tissue surfaces. Modifications to this function generated four novel functions that outperformed the original. The “modified absolute gradient count” function outperformed all others with an average error of 0.56 μm on a test set of images similar to the training set; and, an average error of 0.39 μm on a test set comprised of images captured from a different case, i.e., different staining methods on a different brain region from a different subject rat. We describe a novel algorithm that allows for automatic section thickness determination based on just out-of-focus planes, a prerequisite for fully automatic computerized stereology.
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影响因子:
5.1
作者:
Huang, Wei;Jing, Zhongliang
通讯作者:
Jing, Zhongliang
DOI:
10.1002/cyto.990120302
发表时间:
1991-01-01
期刊:
CYTOMETRY
影响因子:
--
作者:
FIRESTONE, L;COOK, K;PRESTON, K
通讯作者:
PRESTON, K
DOI:
10.1046/j.1365-2818.1997.2630819.x
发表时间:
1997-12-01
期刊:
JOURNAL OF MICROSCOPY-OXFORD
影响因子:
--
作者:
Santos, A;De Solórzano, CO;Del Pozo, F
通讯作者:
Del Pozo, F
影响因子:
0.9
作者:
Hamm, Peter;Schulz, Janina;Englmeier, Karl-Hans
通讯作者:
Englmeier, Karl-Hans
DOI:
10.1002/cyto.990060202
发表时间:
1985-01-01
期刊:
CYTOMETRY
影响因子:
--
作者:
GROEN, FCA;YOUNG, IT;LIGTHART, G
通讯作者:
LIGTHART, G