Solid State Imaging Techniques. Improvement of Image of Bayer Arrangement CCD using Image-shift.

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  • Yamada Eiji
    Precision Technology Development Center, Production Technology Development Group, Sharp Corporation
  • Nishikawa Masayuki
    Precision Technology Development Center, Production Technology Development Group, Sharp Corporation
  • Harada Toshiaki
    Precision Technology Development Center, Production Technology Development Group, Sharp Corporation
  • Okada Hideo
    Precision Technology Development Center, Production Technology Development Group, Sharp Corporation
  • Iwaki Tetsuo
    Precision Technology Development Center, Production Technology Development Group, Sharp Corporation
  • Okuda Tohru
    Precision Technology Development Center, Production Technology Development Group, Sharp Corporation

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Other Title
  • 固体撮像とその関連技術　　イメージシフトによるベイヤー配列ＣＣＤの高画質化
  • イメージシフト ニ ヨル ベイヤー ハイレツ CCD ノ コウガシツカ

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We have developed a high-resolution color still camera by applying an image-shift of one pixel pitch displacement in the horizontal direction to a color still camera using a Bayer arrangement CCD. This two-positional imaging enables a simplified image-shift mechanism and high-speed imaging. We improved the resolution and suppressed chromatic moire by using a new chromatic moire suppression process that makes use of the correlation between RGB channels. We also eliminated the difference in light quantity between two images using a simple 1-dimensional lowpass filter in the horizontal direction. As a result, we have developed a digital still camera loaded with an image-shift mechanism that can be put to practical use. Our camera has higher resolution than a conventional camera using a Bayer arrangement CCD.

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