Imaging device

摘要

In a color filter array of a color imaging element 26, a G filter 34G to which other G filters 34G are adjacent in horizontal and vertical directions and a G filter 34G to which another G filter 34G is not adjacent are determined as dense and sparse G filters, respectively. Defective information on a sparse G defective pixel corresponding to the sparse G filter is more preferentially registered than defective information on a dense G defective pixel corresponding to the dense G filter. Thereby, interpolation processing for a pixel value of the sparse G defective pixel is more preferentially performed than interpolation processing for a pixel value of the dense G defective pixel.

主权项

1. An imaging device comprising:
a color imaging element in which color filters of a plurality of colors are arranged on a plurality of pixels that are formed of photoelectric conversion elements, respectively, which are arrayed in a horizontal direction and a vertical direction, in accordance with a predetermined color filter array, wherein color filters of at least one color include a sparse filter in which a first adjacent number of adjacent color filters having a same color in the horizontal direction and vertical direction is relatively small, or a second adjacent number of adjacent color filters having a same color in an oblique direction is relatively small, when both of the first adjacent number is M (0≦M≦4), and a dense filter in which the first adjacent number or the second adjacent number is relatively large, and the plurality of pixels include a sparse pixel corresponding to the sparse filter and a dense pixel corresponding to the dense filter; an acquiring unit configured to acquire a piece of defective pixel information concerning a defective pixel that is included in the plurality of pixels and includes a sparse defective pixel corresponding to the sparse filter and a dense defective pixel corresponding to the dense filter; and an interpolating unit configured to determine a pixel value of the defective pixel from a pixel value of a peripheral pixel which is positioned in a lower part of the color filter that is in a periphery of the defective pixel and has a same color as that of the defective pixel by interpolation processing based on the piece of defective pixel information which has been acquired by the acquiring unit, the interpolating unit configured to set a second ratio of the sparse defective pixel to be interpolated with respect to a total pixel number of the sparse pixels so as to become higher than a first ratio of the dense defective pixel to be interpolated with respect to a total pixel number of the dense pixels.