Volume 6 Issue 4
Aug.  2013
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ZHANG Chun-lei, XIANG Yang. Correction of image uniformity for imaging spectrometer[J]. Chinese Optics, 2013, 6(4): 584-590. doi: 10.3788/CO.20130604.0584
Citation: ZHANG Chun-lei, XIANG Yang. Correction of image uniformity for imaging spectrometer[J]. Chinese Optics, 2013, 6(4): 584-590. doi: 10.3788/CO.20130604.0584

Correction of image uniformity for imaging spectrometer

doi: 10.3788/CO.20130604.0584
  • Received Date: 11 May 2013
  • Rev Recd Date: 13 Jul 2013
  • Publish Date: 10 Aug 2013
  • To obtain a high quality image from the new type imaging spectrometer, the uniformity correction method for the image was studied according to the characteristics of the image. The new type imaging spectrometer was placed on the rotation stage to simulate the pushbroom of the imaging spectrometer, then the image was got by the imaging spectrometer. The sun was used as the uniformity correction source of the image for the imaging spectrometer, and the data cubic was progressed by the software. Experimental results indicate that high quality image is obtained by using this method, and it also verifies the high performance of the new type imaging spectrometer. The correction time for one pixel is 210-6 s, but much time is needed for large volume of images in the image uniformity correction. Moreover, a diffuser was used as a extended source to correct the image with uniform luminance, and the correction uniformity is less than 4%.

     

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