Use of local rank‐based spatial information for resolution of spectroscopic images

Journal of Chemometrics - Tập 22 Số 5 - Trang 291-298 - 2008
Anna de Juan1, Marcel Maeder2, Thomas M. Hancewicz3, Romà Tauler4
1Chemometrics Group, Department of Analytical Chemistry, Diagonal 647, 08028 Barcelona, Spain
2Department of Chemistry, The University of Newcastle, Callaghan, NSW 2308, Australia
3Unilever Research & Development, Trumbull, 40 Merritt Blvd, Trumbull, CT 06611, USA
4Department of Environmental Chemistry, Institute of Chemistry and Environmental Research, CSIC, Jordi Girona 18, 08034 Barcelona, Spain

Tóm tắt

AbstractSpectroscopic images are singular chemical measurements that enclose chemical and spatial information about samples. Resolution of spectroscopic images is focused on the recovery of the pure spectra and distribution maps of the image constituents from the sole raw spectroscopic measurement. In image resolution, constraints are generally limited to non‐negativity and the spatial information is generally not used. Local rank analysis methods have been adapted to describe the local spatial complexity of an image, providing specific pixel information. This local rank information combined with reference spectral information allows the identification of absent compounds in pixels with low compound overlap. The introduction of this information in the resolution process under the form of constraints helps to increase the performance of the resolution method and to decrease the ambiguity linked to the final solutions. Copyright © 2008 John Wiley & Sons, Ltd.

Từ khóa


Tài liệu tham khảo

10.1002/0471443395

Geladi P, 1997, Multivariate Image Analysis

de Juan A, 2000, Encyclopedia of Analytical Chemistry: Instrumentation and Applications, 9800

10.1016/S0003-2670(03)00724-4

10.1021/ac00014a016

10.1016/j.aca.2003.08.016

10.1021/ci034097v

10.1109/TGRS.2004.835299

10.1016/S0165-9936(04)00101-3

10.1016/S0003-2670(02)01369-7

10.1186/1471-2105-7-343

10.1016/j.saa.2005.11.038

10.1016/j.aca.2005.04.080

10.1366/000370203321535015

HancewiczTM WangJ‐H PudneyPDA ZhangSL.Multivariate image resolution for spectroscopic image analysis. 228th ACS National Meeting Philadelphia PA August 222004; Paper 15.

10.1016/j.chemolab.2004.07.013

10.1002/cem.1180090105

10.1016/0169-7439(87)80020-5

10.1016/j.chemolab.2004.11.006

10.1366/0003702981944472

10.1366/0003702981944526

10.1016/S0003-2670(00)80976-9

10.1016/0169-7439(95)00047-X

10.1016/j.chemolab.2004.12.007

10.1080/10408340600970005

10.1016/0169-7439(95)80009-X

10.1021/ac00130a035

10.1002/cem.654

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Thông tin xuất bản

Journal of Chemometrics

Tập 22 Số 5

291-298

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