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Imaging apparatus and image signal processing device

  • US 20080111894A1
  • Filed: 11/06/2007
  • Published: 05/15/2008
  • Est. Priority Date: 11/10/2006
  • Status: Active Grant
First Claim
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1. An imaging apparatus comprising:

  • a solid-state image sensor having, in a two dimensional array, infrared light-receiving pixels having selective sensitivity to infrared light, and a plurality of types of color light-receiving pixels having sensitivity to the infrared light and to visible light of mutually different specific colors; and

    an image signal processing circuit for generating a processed image signal for displaying an infrared composite image in which an enhanced infrared image is synthesized with and displayed on a visible image on the basis of a raw image signal that is output by the solid-state image sensor and is composed of an infrared pixel signal that corresponds to the infrared light-receiving pixels and a plurality of types of color pixel signals that corresponds to each of the color light-receiving pixels;

    whereinthe image signal processing circuit performs;

    a component image signal generation process for generating an infrared component image signal that corresponds to an infrared light component, and generating a plurality of types of color component image signals that corresponds to visible-light components of the specific colors on the basis of the infrared pixel signal and the color pixel signals;

    an infrared composite process for synthesizing, for each of the specific colors, the color component image signal and a signal obtained by multiplying the infrared component image signal by a gain of the specific color in accordance with the manner in which the infrared image is enhanced, and generating a converted color component image signal of each of the specific colors; and

    a processed image signal generation process for generating the processed image signal on the basis of the plurality of converted color component image signals.

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