Using a time-delay and integration camera at a non-zero viewing angle under vibration conditions

Miettinen, Jorma K.; Ailisto, Heikki

doi:10.1016/s0143-8166(99)00014-7

Cited by 6 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…But as the residual motion usually is not a uniform linear motion, these blur kernels will change with motion trajectory. 13,14 Research focused on the TDI image motion deblurring is mainly based on particular structures. Hochman et al 15 proposed a method for restoration of the TDI blur images influenced by mechanical vibrations, and the TDI camera utilized in their system is staggered which is different from regular TDI camera and is often employed in thermal imaging.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Image restoration of hybrid time delay and integration camera system with residual motion

Zheng

Feng

et al. 2011

Opt. Eng

View full text Add to dashboard Cite

In this paper, we present a hybrid system for time delay and integration (TDI) image restoration. Images are degraded by residual motion, which distorts and blurs the TDI images during exposures and excludes the along-track scanning motion. The motion trajectory is estimated from the image sequence captured by an auxiliary high-speed camera. In order to make the estimated results less sensitive to the imaging conditions and noise, a new method based on cross-correlation is introduced for motion estimation. Then geometric distortion of the TDI image is removed by choosing the correct blurred block according to the central of the corresponding motion trajectory and the final image is restored row by row with the Richardson-Lucy algorithm. Simulated and experimental results are given to prove the effectiveness of our system. C 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

show abstract

Section: Introductionmentioning

confidence: 99%

“…It estimated the field relative motion by a conventional leastsquares estimation technique. Miettinen and Ailisto et al 13 analyzed the effects caused by vibrations when using a TDI camera at non-zero viewing angles and proposed a method for approximating the TDI performance under vibration conditions.…”

Section: Introductionmentioning

confidence: 99%

Image restoration of hybrid time delay and integration camera system with residual motion

Zheng

Feng

et al. 2011

Opt. Eng

View full text Add to dashboard Cite

show abstract

“…[5][6][7][8] This paper addresses restoration of a video of a stationary scene, captured by a vibrated staggered TDI camera. As a result of the vibrations and the scanning mechanism just described, the resulting distortion is not shift-invariant but rather, it is spatially random according to the vibration spectrum, 9 hence, common shift-invariant image filtering restoration techniques are inappropriate. Nevertheless, the information loss resulting from vibrations and from the finite sensor size may be recovered by means of superresolution ͑SR͒ reconstruction, exploiting the slightly different information recorded at each low-resolution ͑LR͒ image.…”

Section: Introductionmentioning

confidence: 99%

Superresolution reconstruction of a video captured by a vibrated time delay and integration camera

Haik

Yitzhaky

2006

J. Electron. Imaging

View full text Add to dashboard Cite

Various applications such as industrial product inspection or low signal-to-noise situations (as in thermal imaging) employ a time delay and integration (TDI) scanning imaging technique. Due to common vibration sources such as the camera platform motion or the thermal detector's cooling system, the acquired image may be degraded by severe shift-variant geometric distortions and motion blur. We use these vibrations in terms of superresolution to create an improved high-resolution video sequence from the degraded lower resolution sequence, in two main stages: subpixel motion estimation with respect to translations and rotations, used for point spread function (PSF) estimation, followed by an efficient implementation of the projection onto convex sets (POCS) method. We generalize and considerably improve a previous technique for restoration of a single image captured by a translational vibrated staggered-TDI camera (Hochman et al., 2004). The proposed method is implemented with both simulated videos and real degraded thermal videos. A comparative analysis shows an advantage of the proposed method over others in restoring the vibrated videos. © 2006 SPIE and IS&T.

show abstract

An analytical model of the laser clad geometry

Lalas

Tsirbas

Salonitis

et al. 2006

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Using a time-delay and integration camera at a non-zero viewing angle under vibration conditions

Cited by 6 publications

References 9 publications

Image restoration of hybrid time delay and integration camera system with residual motion

Image restoration of hybrid time delay and integration camera system with residual motion

Superresolution reconstruction of a video captured by a vibrated time delay and integration camera

An analytical model of the laser clad geometry

Contact Info

Product

Resources

About