the technique of producing a photographic vignette, esp a portrait, by progressively reducing the amount of light falling on the photographic surfacetowards the edges
2.
the reduction in area of a light beam passing through a camera lens as the obliquity of the beam is increased
Examples of 'vignetting' in a sentence
vignetting
Our theoretical findings have to be clinically validated with detailed investigation of this vignetting effect.
Achim Langenbucher, Susanne Goebels, Nóra Szentmáry, Berthold Seitz, Timo Eppig 2013, 'Vignetting and Field of View with the KAMRA Corneal Inlay', BioMed Research Internationalhttp://dx.doi.org/10.1155/2013/154593. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Vignetting correction has been widely addressed for grey-level images, but not for colour ones.
Filippo Piccinini, Alessandro Bevilacqua 2018, 'Colour Vignetting Correction for Microscopy Image Mosaics Used for Quantitative Analyses',BioMed Research Internationalhttp://dx.doi.org/10.1155/2018/7082154. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The results showed that the proposed method performs significantly better in the vignetting area.
Chaochao Chen, Jun Pan, Mi Wang, Ying Zhu 2018, 'Side-Slither Data-Based Vignetting Correction of High-Resolution Spaceborne Camerawith Optical Focal Plane Assembly', Sensorshttp://www.mdpi.com/1424-8220/18/10/3402. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
These images were corrected to eliminate the vignetting effect, and normalized between acquisition dates.
With this system, vignetting occurs in the area of overlap, affecting image quality.
Chaochao Chen, Jun Pan, Mi Wang, Ying Zhu 2018, 'Side-Slither Data-Based Vignetting Correction of High-Resolution Spaceborne Camerawith Optical Focal Plane Assembly', Sensorshttp://www.mdpi.com/1424-8220/18/10/3402. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
We then performed accurate corrections of image vignetting, geometric distortions, and radiometric bidirectional effects.
Prominent vignetting was also visible in images captured under both stable and changing ambient conditions.
Julia Kelly, Natascha Kljun, Per-Ola Olsson, Laura Mihai, Bengt Liljeblad, Per Weslien,Leif Klemedtsson, Lars Eklundh 2019, 'Challenges and Best Practices for Deriving Temperature Data from an Uncalibrated UAVThermal Infrared Camera', Remote Sensinghttp://www.mdpi.com/2072-4292/11/5/567. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Vignetting adversely affects the performance of computerized methods for analyzing fundus imagery.
Fousia M. Shamsudeen, G. Raju 2019, 'An objective function based technique for devignetting fundus imagery using MST',Informatics in Medicine Unlockedhttp://www.sciencedirect.com/science/article/pii/S235291481830131X. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The problem can be solved by flat-field correcting the images through the vignetting function.
Filippo Piccinini, Alessandro Bevilacqua 2018, 'Colour Vignetting Correction for Microscopy Image Mosaics Used for Quantitative Analyses',BioMed Research Internationalhttp://dx.doi.org/10.1155/2018/7082154. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
On the other hand when the experiment was performed at ground level the vignetting effect was identified.
Andrés L. G. Jaime, Rubens A. C. Lamparelli, Jansle V. Rocha 2004, 'Radiometric corrections of the vignetting effect in aerial digital images', Revista Brasileira de Cartografiahttp://www.rbc.ufrj.br/_pdf_56_2004/56_1_07.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)