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Author
Antonio Lopez; Ernest Valveny; Juan J. Villanueva
Title
Real-time quality control of surgical material packaging by artificial vision
Type
Journal Article
Year
2005
Publication
Assembly Automation
Abbreviated Journal
Volume
25
Issue
3
Pages
Keywords
Abstract
IF: 0.061)
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Notes
ADAS;DAG
Approved
no
Call Number
ADAS @ adas @ LVV2005
Serial
552
Permanent link to this record
Author
C. Alejandro Parraga; Jordi Roca; Dimosthenis Karatzas; Sophie Wuerger
Title
Limitations of visual gamma corrections in LCD displays
Type
Journal Article
Year
2014
Publication
Displays
Abbreviated Journal
Dis
Volume
35
Issue
5
Pages
227–239
Keywords
Display calibration; Psychophysics; Perceptual; Visual gamma correction; Luminance matching; Observer-based calibration
Abstract
A method for estimating the non-linear gamma transfer function of liquid–crystal displays (LCDs) without the need of a photometric measurement device was described by Xiao et al. (2011) [1]. It relies on observer’s judgments of visual luminance by presenting eight half-tone patterns with luminances from 1/9 to 8/9 of the maximum value of each colour channel. These half-tone patterns were distributed over the screen both over the vertical and horizontal viewing axes. We conducted a series of photometric and psychophysical measurements (consisting in the simultaneous presentation of half-tone patterns in each trial) to evaluate whether the angular dependency of the light generated by three different LCD technologies would bias the results of these gamma transfer function estimations. Our results show that there are significant differences between the gamma transfer functions measured and produced by observers at different viewing angles. We suggest appropriate modifications to the Xiao et al. paradigm to counterbalance these artefacts which also have the advantage of shortening the amount of time spent in collecting the psychophysical measurements.
Address
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Thesis
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Place of Publication
Editor
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Summary Language
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Series Editor
Series Title
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Series Issue
Edition
ISSN
ISBN
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Conference
Notes
CIC; DAG; 600.052; 600.077; 600.074
Approved
no
Call Number
Admin @ si @ PRK2014
Serial
2511
Permanent link to this record
Author
Oriol Ramos Terrades; Ernest Valveny
Title
A new use of the ridgelets transform for describing linear singularities in images
Type
Journal Article
Year
2006
Publication
Pattern Recognition Letters
Abbreviated Journal
PRL
Volume
27
Issue
6
Pages
587–596
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
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Series Issue
Edition
ISSN
ISBN
Medium
Area
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Conference
Notes
DAG
Approved
no
Call Number
DAG @ dag @ RaV2006a
Serial
635
Permanent link to this record
Author
Ernest Valveny; Philippe Dosch
Title
A general framework for the evaluation of symbol recognition methods
Type
Journal
Year
2006
Publication
International Journal on Document Analysis and Recognition
Abbreviated Journal
Volume
Issue
Pages
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
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Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Notes
DAG
Approved
no
Call Number
DAG @ dag @ VaD2006
Serial
686
Permanent link to this record
Author
Josep Llados; Dorothea Blostein
Title
Special Issue on Graphics Recognition
Type
Journal
Year
2007
Publication
International Journal on Document Analysis and Recognition
Abbreviated Journal
IJDAR
Volume
9
Issue
1
Pages
1–2
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Guest Editors
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Notes
DAG
Approved
no
Call Number
DAG @ dag @ LlB2007
Serial
781
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