Fritz Albregtsen

  • Researcher
 

Author network for Fritz Albregtsen by COREMINE medical


Publications 2018

Kleppe A, Albregtsen F, Vlatkovic L, Pradhan M, Nielsen B, Hveem TS, Askautrud HA, Kristensen GB, Nesbakken A, Trovik J, Wæhre H, Tomlinson I, Shepherd NA, Novelli M, Kerr DJ, Danielsen HE (2018)
Chromatin organisation and cancer prognosis: a pan-cancer study
Lancet Oncol, 19 (3), 356-369
DOI 10.1016/S1470-2045(17)30899-9, PubMed 29402700

Kumar RP, Barkhatov L, Edwin B, Albregtsen F, Elle OJ (2018)
Portal and Hepatic Vein Segmentation with Leak Restriction: A Pilot Study
IFMBE PROC, 65, 823-826

Nielsen B, Kleppe A, Hveem TS, Pradhan M, Syvertsen RA, Nesheim JA, Kristensen GB, Trovik J, Kerr DJ, Albregtsen F, Danielsen HE (2018)
Association Between Proportion of Nuclei With High Chromatin Entropy and Prognosis in Gynecological Cancers
J Natl Cancer Inst, 110 (12), 1400-1408
DOI 10.1093/jnci/djy063, PubMed 29684152

Publications 2016

Holmen S, Galappaththi-Arachchige HN, Kleppa E, Pillay P, Naicker T, Taylor M, Onsrud M, Kjetland EF, Albregtsen F (2016)
Characteristics of Blood Vessels in Female Genital Schistosomiasis: Paving the Way for Objective Diagnostics at the Point of Care
PLoS Negl Trop Dis, 10 (4), e0004628
DOI 10.1371/journal.pntd.0004628, PubMed 27073857

Hveem TS, Kleppe A, Vlatkovic L, Ersvær E, Wæhre H, Nielsen B, Kjær MA, Pradhan M, Syvertsen RA, Nesheim JA, Liestøl K, Albregtsen F, Danielsen HE (2016)
Chromatin changes predict recurrence after radical prostatectomy
Br J Cancer, 114 (11), 1243-50
DOI 10.1038/bjc.2016.96, PubMed 27124335

Hveem TS, Njølstad TS, Nielsen B, Syvertsen RA, Nesheim JA, Kjæreng ML, Kildal W, Pradhan M, Marcickiewicz J, Tingulstad S, Staff AC, Haugland HK, Eraker R, Oddenes K, Rokne JA, Tjugum J, Lode MS, Amant F, Werner HM, Bjørge L, Albregtsen F, Liestøl K, Salvesen HB, Trovik J, Danielsen HE et al. (2016)
Changes in Chromatin Structure in Curettage Specimens Identifies High-Risk Patients in Endometrial Cancer
Cancer Epidemiol Biomarkers Prev, 26 (1), 61-67
DOI 10.1158/1055-9965.EPI-16-0215, PubMed 27587790

Publications 2015

Holmen SD, Kjetland EF, Taylor M, Kleppa E, Lillebø K, Gundersen SG, Onsrud M, Albregtsen F (2015)
Colourimetric image analysis as a diagnostic tool in female genital schistosomiasis
Med Eng Phys, 37 (3), 309-14
DOI 10.1016/j.medengphy.2014.12.007, PubMed 25630808

Holmen SD, Kleppa E, Lillebø K, Pillay P, van Lieshout L, Taylor M, Albregtsen F, Vennervald BJ, Onsrud M, Kjetland EF (2015)
The first step toward diagnosing female genital schistosomiasis by computer image analysis
Am J Trop Med Hyg, 93 (1), 80-6
DOI 10.4269/ajtmh.15-0071, PubMed 25918212

Kumar RP, Albregtsen F, Reimers M, Edwin B, Lango T, Elle OJ (2015)
Blood Vessel Segmentation and Centerline Tracking Using Local Structure Analysis
IFMBE PROC, 45, 122-+

Landmark K, Solberg AHS, Albregtsen F, Austeng A, Hansen RE (2015)
A Radon-Transform-Based Image Noise Filter-With Applications to Multibeam Bathymetry
IEEE Trans. Geosci. Remote Sensing, 53 (11), 6252-6273

Publications 2014

Kumar RP, Albregtsen F, Reimers M, Edwin B, Langø T, Elle OJ (2014)
Three-Dimensional Blood Vessel Segmentation and Centerline Extraction based on Two-Dimensional Cross-Section Analysis
Ann Biomed Eng, 43 (5), 1223-34
DOI 10.1007/s10439-014-1184-4, PubMed 25398332

Nielsen B, Hveem TS, Kildal W, Abeler VM, Kristensen GB, Albregtsen F, Danielsen HE (2014)
Entropy-based adaptive nuclear texture features are independent prognostic markers in a total population of uterine sarcomas
Cytometry A, 87 (4), 315-25
DOI 10.1002/cyto.a.22601, PubMed 25483227

Simone G, Audino G, Farup I, Albregtsen F, Rizzi A (2014)
Termite Retinex: a new implementation based on a colony of intelligent agents
J. Electron. Imaging, 23 (1), 013006

Publications 2013

Kumar RP, Albregtsen F, Reimers M, Lango T, Edwin B, Elle OJ (2013)
3D multiscale vessel enhancement based centerline extraction of blood vessels
PROC SPIE, 8669, 86691X

Publications 2012

Nielsen B, Albregtsen F, Danielsen HE (2012)
Automatic segmentation of cell nuclei in Feulgen-stained histological sections of prostate cancer and quantitative evaluation of segmentation results
Cytometry A, 81 (7), 588-601
DOI 10.1002/cyto.a.22068, PubMed 22605528

Nielsen B, Albregtsen F, Kildal W, Abeler VM, Kristensen GB, Danielsen HE (2012)
The prognostic value of adaptive nuclear texture features from patient gray level entropy matrices in early stage ovarian cancer
Anal Cell Pathol (Amst), 35 (4), 305-14
DOI 10.3233/ACP-2012-0065, PubMed 22596183

Publications 2011

Dunn JM, Hveem T, Pretorius M, Oukrif D, Nielsen B, Albregtsen F, Lovat LB, Novelli MR, Danielsen HE (2011)
Comparison of nuclear texture analysis and image cytometric DNA analysis for the assessment of dysplasia in Barrett's oesophagus
Br J Cancer, 105 (8), 1218-23
DOI 10.1038/bjc.2011.353, PubMed 21934680

Publications 2010

Akbari A, Albregtsen F, Jakobsen KS (2010)
Automatic lane detection and separation in one dimensional gel images using continuous wavelet transform
Anal. Methods, 2 (9), 1360-1371

Pedersen M, Bonnier N, Hardeberg JY, Albregtsen F (2010)
Attributes of image quality for color prints
J. Electron. Imaging, 19 (1), 011016

Pedersen M, Bonnier N, Hardeberg JY, Albregtsen F (2010)
Estimating Print Quality Attributes by Image Quality Metrics
COLOR IMAG CONF, 68-73

Pedersen M, Bonnier N, Hardeberg JY, Albregtsen F (2010)
Validation of Quality Attributes for Evaluation of Color Prints
COLOR IMAG CONF, 74-79

Publications 2009

Albregtsen F (2009)
How to calculate the goodness-of-fit of a fractal dimension
Cell Oncol, 31 (6), 501
DOI 10.3233/CLO-2009-0506, PubMed 19940365

Publications 2008

Akbari A, Marthinsen G, Lifjeld JT, Albregtsen F, Wennerberg L, Stenseth NC, Jakobsen KS (2008)
Improved DNA fragment length estimation in capillary electrophoresis
Electrophoresis, 29 (6), 1273-85
DOI 10.1002/elps.200700523, PubMed 18288778

Nielsen B, Albregtsen F, Danielsen HE (2008)
Statistical nuclear texture analysis in cancer research: a review of methods and applications
Crit Rev Oncog, 14 (2-3), 89-164
PubMed 19409060

Publications 2005

Cvancarova M, Albregtsen F, Brabrand K, Samset E (2005)
Segmentation of ultrasound images of liver tumors applying snake algorithms and GVF
INT CONGR SER, 1281, 218-223

Nielsen B, Albregtsen F, Danielsen HE (2005)
Fractal analysis of monolayer cell nuclei from two different prognostic classes of early ovarian cancer
MATH BIOSCI INTERAC, 175-186

Publications 2004

Akbari A, Albregtsen F (2004)
Automatic segmentation of DNA bands in one dimensional gel images produced by hybridizing techniques
P ANN INT IEEE EMBS, 26, 2852-2855

Akbari A, Albregtsen F (2004)
Evaluation of noise in DNA fingerprint images produced by hybridization techniques
HELS UNIV TECHNOL S, 46, 61-64

Akbari A, Albregtsen F (2004)
Automatic segmentation of DNA bands in one dimensional gel images produced by hybridizing techniques
Conf Proc IEEE Eng Med Biol Soc, 4, 2852-5
DOI 10.1109/IEMBS.2004.1403813, PubMed 17270872

Nielsen B, Albregtsen F, Danielsen HE (2004)
Low dimensional adaptive texture feature vectors from class distance and class difference matrices
IEEE Trans Med Imaging, 23 (1), 73-84
DOI 10.1109/TMI.2003.819923, PubMed 14719689

Schulerud H, Albregtsen F (2004)
Many are called, but few are chosen. Feature selection and error estimation in high dimensional spaces
Comput Methods Programs Biomed, 73 (2), 91-9
DOI 10.1016/S0169-2607(03)00018-X, PubMed 14757253

Publications 2003

Akbari A, Albregtsen F (2003)
Normalizing the background and removing the trend in one-dimensional DNA fingerprint images
J Chromatogr A, 1014 (1-2), 11-9
DOI 10.1016/S0021-9673(03)00577-6, PubMed 14558607

Publications 2002

Akbari A, Albregtsen F, Lingjaerde OC (2002)
Adaptive weighted least squares method for the estimation of DNA fragment lengths from agarose gels
Electrophoresis, 23 (2), 176-81
DOI 10.1002/1522-2683(200202)23:2<176::AID-ELPS176>3.0.CO;2-1, PubMed 11840520

Nielsen B, Albregtsen F, Danielsen HE (2002)
Fractal Signature Vectors and Lacunarity Class Distance Matrices to extract new adaptive texture features from cell nuclei
MATH BIOSCI INTERAC, 55-65

Publications 2001

Nielsen B, Albregtsen F, Kildal W, Danielsen HE (2001)
Prognostic classification of early ovarian cancer based on very low dimensionality adaptive texture feature vectors from cell nuclei from monolayers and histological sections
Anal Cell Pathol, 23 (2), 75-88
DOI 10.1155/2001/683747, PubMed 11904463

Publications 2000

Albregtsen F, Nielsen B, Danielsen HE (2000)
Adaptive gray level run length features from class distance matrices
INT C PATT RECOG, 738-741

Publications 1999

Baheerathan S, Albregtsen F, Danielsen HE (1999)
New texture features based on the complexity curve
Pattern Recognit., 32 (4), 605-618

Nielsen B, Albregtsen F, Danielsen HE (1999)
The use of fractal features from the periphery of cell nuclei as a classification tool
Anal Cell Pathol, 19 (1), 21-37
PubMed 10661622

Nielsen B, Albregtsen F, Danielsen HE (1999)
The use of fractal features from the periphery of cell nuclei as a classification tool
Anal. Cell. Pathol., 19 (1), 21-37

Publications 1998

Baheerathan S, Albregtsen F, Danielsen HE (1998)
Registration of serial sections of mouse liver cell nuclei
J Microsc, 192 (Pt 1), 37-53
DOI 10.1046/j.1365-2818.1998.00405.x, PubMed 9848269

Schulerud H, Kristensen GB, Liestol K, Vlatkovic L, Reith A, Albregtsen F, Danielsen HE (1998)
A review of caveats in statistical nuclear image analysis
Anal. Cell. Pathol., 16 (2), 63-82

Schulerud H, Kristensen GB, Liestøl K, Vlatkovic L, Reith A, Albregtsen F, Danielsen HE (1998)
A review of caveats in statistical nuclear image analysis
Anal Cell Pathol, 16 (2), 63-82
PubMed 9692681

Yogesan K, Schulerud H, Albregtsen F, Danielsen HE (1998)
Ultrastructural texture analysis as a diagnostic tool in mouse liver carcinogenesis
Ultrastruct Pathol, 22 (1), 27-37
DOI 10.3109/01913129809032255, PubMed 9491213

Publications 1997

Schulerud H, Kristensen GB, Vlatkovic L, Albregtsen F, Liestol K, Danielsen HE (1997)
Prognosis of cervical cancer using image analysis of cell nuclei.
SCIA '97 - PROCEEDINGS OF THE 10TH SCANDINAVIAN CONFERENCE ON IMAGE ANALYSIS, VOLS 1 AND 2, 651-658

Yang L, Albregtsen F, Taxt T (1997)
Fast computation of three-dimensional geometric moments using a discrete divergence theorem and a generalization to higher dimensions
Graph. Models Image Process., 59 (2), 97-108

Yang L, Taxt T, Albregtsen F (1997)
Bottom detection for multibeam sonars with active contours
OCEANS '97 MTS/IEEE CONFERENCE PROCEEDINGS, VOLS 1 AND 2, 943-950

Publications 1996

Yang LR, Albregtsen F (1996)
Fast and exact computation of Cartesian geometric moments using discrete Green's theorem
Pattern Recognit., 29 (7), 1061-1073

Yogesan K, Jørgensen T, Albregtsen F, Tveter KJ, Danielsen HE (1996)
Entropy-based texture analysis of chromatin structure in advanced prostate cancer
Cytometry, 24 (3), 268-76
DOI 10.1002/(SICI)1097-0320(19960701)24:3<268::AID-CYTO10>3.0.CO;2-O, PubMed 8800560

Publications 1994

YANG L, ALBREGTSEN F (1994)
FAST COMPUTATION OF INVARIANT GEOMETRIC MOMENTS - A NEW METHOD GIVING CORRECT RESULTS
INT C PATT RECOG, 201-204

Publications 1992

ALBREGTSEN F, NIELSEN B, YOGESAN K (1992)
FRACTAL DIMENSION, ONLY A FRACTION OF THE TRUTH
11TH IAPR INTERNATIONAL CONFERENCE ON PATTERN RECOGNITION, PROCEEDINGS, VOL III: CONFERENCE C: IMAGE, SPEECH, AND SIGNAL ANALYSIS, 733-736

VOKAC M, ALBREGTSEN F (1992)
COMPRESSION OF 2-D SOLAR SPECTRAL IMAGES BY ADAPTIVE PIECEWISE-LINEAR APPROXIMATION
11TH IAPR INTERNATIONAL CONFERENCE ON PATTERN RECOGNITION, PROCEEDINGS, VOL III: CONFERENCE C: IMAGE, SPEECH, AND SIGNAL ANALYSIS, 65-69

Publications 1985

ALBREGTSEN F, ANDERSEN BN (1985)
THE EFFECT OF SPATIAL SMEARING ON SOLAR DOPPLER MEASUREMENTS .1. MATHEMATICAL FORMULATION AND APPLICATION TO MEASUREMENTS OF SOLAR ROTATION
Sol. Phys., 95 (2), 239-249

Publications 1984

ALBREGTSEN F, JORAS PB, MALTBY P (1984)
LIMB-DARKENING AND SOLAR-CYCLE VARIATION OF SUNSPOT INTENSITIES
Sol. Phys., 90 (1), 17-30

MALTBY P, ALBREGTSEN F, MOE OK, KURUCZ R, AVRETT E (1984)
SOLAR-CYCLE TEMPERATURE-VARIATIONS IN SUNSPOTS
LECT NOTES PHYS, 193, 176-179

Publications 1981

ALBREGTSEN F, MALTBY P (1981)
SOLAR-CYCLE VARIATION OF SUNSPOT INTENSITY
Sol. Phys., 71 (2), 269-283

ALBREGTSEN F, MALTBY P (1981)
ON THE NEED FOR SPACE OBSERVATIONS OF THE UMBRA-PHOTOSPHERE INTENSITY RATIO
Sol. Phys., 74 (1), 147-151

Publications 1979

MALTBY P, ALBREGTSEN F (1979)
SOLAR-CYCLE VARIATION OF SUNSPOT INTENSITY AND X-RAY BRIGHT POINTS
Astrophys. J., 234 (2), L147-L149

Publications 1978

ALBREGTSEN F, MALTBY P (1978)
NEW LIGHT ON SUNSPOT DARKNESS AND SOLAR-CYCLE
Nature, 274 (5666), 41-42

Publications 1977

ALBREGTSEN F, HANSEN TL (1977)
WAVELENGTH DEPENDENCE OF GRANULATION (0.38-2.4 MU)
Sol. Phys., 54 (1), 31-33

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