scholarly journals A Distortion Correction Method of Wide-Angle Camera Images through the Estimation and Validation of a Camera Model

2013 ◽  
Vol 8 (12) ◽  
pp. 1923-1932 ◽  
Author(s):  
Kyeong-Im Kim ◽  
Soon-Hee Han ◽  
Jeong-Seon Park
Keyword(s):  
Correction Method ◽  
Distortion Correction ◽  
Wide Angle ◽  
Camera Model ◽  
Wide Angle Camera

scholarly journals Distortion correction for wide angle holographic projector

2021 ◽  
Vol 13 (4) ◽  
pp. 79
Author(s):  
Jędrzej Szpygiel ◽  
Maksymilian Chlipała ◽  
Rafał Kukołowicz ◽  
Moncy Idicula ◽  
Tomasz Kozacki
Keyword(s):  
Angular Spectrum ◽  
Correction Method ◽  
Input Image ◽  
Distortion Correction ◽  
Optical Systems ◽  
Phase Method ◽  
Light Illumination ◽  
Wide Angle ◽  
Holographic Display ◽  
Double Phase

This letter presents distortion correction method enabling distortion minimized, large size image in wide angle holographic projector. The technique applies numerical predistortion of an input image used for hologram generation. It is based on estimation of distortion coefficients by comparing optically reconstructed point test chart with the original one. Obtained experimental results prove that the technique allows reconstruction of high-quality image. Full Text: PDF ReferencesM. Makowski, Experimental Aspects of Holographic Projection with a Liquid-Crystal-on-Silicon Spatial Light Modulator, in Holographic Materials and Optical Systems, M. Kumar, ed. (IntechOpen, 2019). CrossRef H. Pang, A. Cao, W. Liu, L. Shi, and Q. Deng, "Effective method for further magnifying the image in holographic projection under divergent light illumination", Appl. Opt. 58, 8713 (2019). CrossRef Y. Qi, C. Chang, and J. Xia, "Speckleless holographic display by complex modulation based on double-phase method", Opt. Express 24, 30368 (2016). CrossRef E. Buckley, "Holographic Laser Projection", J. Display Technol. 99, 1 (2010). DirectLink M. Chlipała, T. Kozacki, H. Yeom, J. Martinez-Carranza, R. Kukołowicz, J. Kim, J. Yang, J. Choi, J. Pi, and C. Hwang, "Wide angle holographic video projection display", Opt. Lett. 46, 4956 (2021). CrossRef Z. He, X. Sui, L. Cao and G. Jin, "Image-Distortion Correction Algorithm for Computer-Generated Holographic Display," 2018 IEEE 27th International Symposium on Industrial Electronics (ISIE), 1331 (2018). CrossRef A. Kaczorowski, G.S. Gordon, A. Palani, S. Czerniawski and T.D. Wilkinson, "Optimization-Based Adaptive Optical Correction for Holographic Projectors", J. Display Technol. 11(7), 596 (2015). CrossRef Z. He, X. Sui, G. Jin, L. Cao, "Distortion-Correction Method Based on Angular Spectrum Algorithm for Holographic Display", IEEE Trans. Industr. Inform. 15, 6162 (2019). CrossRef O. Mendoza-Yero, G. Mínguez-Vega, and J. Lancis, "Encoding complex fields by using a phase-only optical element", Opt. Lett. 39, 1740 (2014). CrossRef T. Kozacki, K. Falaggis, "Angular spectrum method with compact space–bandwidth: generalization and full-field accuracy", Appl. Opt. 55, 5014 (2016). CrossRef

Mechatronic Design of ARC Humanoid Robot Open Platform: First Fully 3D Printed Kid-Sized Robot

2020 ◽  
Vol 17 (03) ◽  
pp. 2050010
Author(s):  
Saeed Saeedvand ◽  
Hadi S. Aghdasi ◽  
Jacky Baltes
Keyword(s):  
Humanoid Robot ◽  
Size Range ◽  
Robot Design ◽  
3D Printer ◽  
Wide Angle ◽  
Open Platform ◽  
3D Printed ◽  
Wide Angle Camera ◽  
Computational Resources ◽  
User Friendly

Although there are several popular and capable humanoid robot designs available in the kid-size range, they lack some important characteristics: affordability, being user-friendly, using a wide-angle camera, sufficient computational resources for advanced AI algorithms, and mechanical robustness and stability are the most important ones. Recent advances in 3D printer technology enables researchers to move from model to physical implementation relatively easy. Therefore, we introduce a novel fully 3D printed open platform humanoid robot design named ARC. In this paper, we discuss the mechanical structure and software architecture. We show the capabilities of the ARC design in a series of experimental evaluations.

Determination of ghost images for the wide angle camera of the Rosetta ESA mission

2012 ◽  
Author(s):  
Vania Da Deppo ◽  
Fiorangela La Forgia ◽  
Giampiero Naletto ◽  
Maria-Guglielmina Pelizzo ◽  
Cesare Barbieri
Keyword(s):  
Wide Angle ◽  
Wide Angle Camera ◽  
Ghost Images
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