| Popis: |
To adapt a space remote sensing camera to its large dynamic scene,a scheme with two-row Time Delay Integration(TDI) CCDs was proposed to increase the dynamic range of the camera.The two-row TDI CCDs were set separately different integration stages.The obtained image with a high integration stage CCD might contain a saturation region,however its dark region could be distinguished much better.The image with a low integration stage CCD could not be distinguished better,but the gray level of bright region could be recognized easyly.Finally,the images were synthesized according to the difference of integration stages for the two-row CCDs to gain a large dynamic range image.This scheme increases the dynamic range of the camera effectively.When the integration stages of the two row CCDs are set as 8 and 48,respectively,the dynamic range can increase by 15.56 dB. |
