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

Photonic Sensors

Junxia Shi¹  Liang Huang¹  Chengshan Han¹  Hongyin Han¹  Xucheng Xue¹  Xiaonan Jiang¹  Hengyi Lv¹  Changhong Hu¹  Xiangzhi Li¹  Yao Fu¹  Wu Sun¹ 

[1] Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences;

关键词: Push-broom cameras;    HDR imaging;    remote sensing;   

DOI  :  10.1007/s13320-017-0448-7

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown