Performance of an extended dynamic range time delay integration charge coupled device (XDR TDI CCD) for high-intrascene dynamic range scanning

Levine, Peter; Dawson, Robin M.; Andrews, James T.; Bhaskaran, Mahalingham; Furst, David; Hsueh, Fu-Lung; Meray, Grazyna M.; Sudol, Thomas M.; Swain, P. K.; Tower, John R.

doi:10.1117/12.476790

Cited by 2 publications

(1 citation statement)

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“…By improving the voltage swing at the pixel output and developing new readout architecture, the DR of the CMOS image sensor is optimized [4]. For time-delay-integration (TDI) charge coupled device (CCD) image sensor which can be used in space cameras [5], an extended dynamic range architecture was designed by P. A. Levine et al [6]. As for the third kind of solution, they are all based on multi-exposure.…”

Section: Introductionmentioning

confidence: 99%

An HDR imaging method with DTDI technology for push-broom cameras

Han

Xue

et al. 2017

Photonic Sens

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Abstract:Conventionally, high dynamic-range (HDR) imaging is based on taking two or more pictures of the same scene with different exposure. However, due to a high-speed relative motion between the camera and the scene, it is hard for this technique to be applied to push-broom remote sensing cameras. For the sake of HDR imaging in push-broom remote sensing applications, the present paper proposes an innovative method which can generate HDR images without redundant image sensors or optical components. Specifically, this paper adopts an area array CMOS (complementary metal oxide semiconductor) with the digital domain time-delay-integration (DTDI) technology for imaging, instead of adopting more than one row of image sensors, thereby taking more than one picture with different exposure. And then a new HDR image by fusing two original images with a simple algorithm can be achieved. By conducting the experiment, the dynamic range (DR) of the image increases by 26.02 dB. The proposed method is proved to be effective and has potential in other imaging applications where there is a relative motion between the cameras and scenes.

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Section: Introductionmentioning

confidence: 99%