Abstract:
It is determined whether an image before pixel mixture has a high frequency. In a partial image obtained by an imaging device having a Bayer array, a Gr pixel which indicates a green component and is arranged in the same row as an R pixel indicating a red component is distinguished from a Gb pixel which indicates a green component and is arranged in the same row as a B pixel indicating a blue component. The Gr pixels and the Gb pixels which are distinguished from each other are separately mixed. When an image before pixel mixture has a high-frequency component, the level of the Gr pixel and the level of the Gb pixel are different from each other after pixel mixture. It is determined whether the image before pixel mixture has a high-frequency component on the basis of the level of the Gr pixel and the level of the Gb pixel after pixel mixture.
Abstract:
According to a color imaging element and an imaging device of the present invention, because one or more pixels of first filters corresponding to transparence are disposed within a pixel line of each direction of a first direction to a fourth direction of a color filter array, it is possible to acquire brightness information in a high frequency range with high precision and reduce occurrence of a false color (color moire), thereby obtaining image data with excellent resolution. Further, because one or more pixels of the first filters corresponding to transparence are disposed within the pixel line of each direction of the first direction to the fourth direction, it is possible to realize color filters with excellent optical sensitivity.
Abstract:
A color imaging element, includes a color filter array, in which the color filter array includes an array pattern of a 3×3 pixel group in which first filters corresponding to a green color and second filters corresponding to red and blue colors are arrayed, and the first filters are placed at a center and 4 corners in the 3×3 pixel group, and the array pattern is repeatedly placed in horizontal and vertical directions, and in a pixel group within a predetermined area of the color imaging element, phase difference detection pixels for acquiring phase difference information are placed in entire components of one direction among components in the horizontal direction and components in the vertical direction in the pixel group.
Abstract:
A single-plate color imaging element where the color filter array includes a basic array pattern with first filters corresponding to a first color and second filters corresponding to a second color with contribution ratios for obtaining luminance signals lower than the first color, the basic array pattern is repeatedly arranged in a diagonal grid shape, one or more first filters are arranged in horizontal, vertical, upper right, and lower right directions of the color filter array, one or more second filters corresponding to each color of the second color are arranged in the upper right and lower right directions of the color filter array in the basic array pattern, and a proportion of the number of pixels of the first color corresponding to the first filters is greater than a proportion of the number of pixels of each color of the second color corresponding to the second filters.
Abstract:
According to an aspect of the present invention, the first filters, which correspond to the two or more first colors that contribute to obtaining a brightness signal more than the second colors, are disposed within each pixel line in first direction to the fourth direction of the color filter arrangement, and it is configured so that the ratio of the number of pixels of the first colors corresponding to the first filters is larger than the ratio of the number of pixels of each color of the second colors corresponding to the second filters of two or more colors other than the first colors. Accordingly, the degree of reproducibility of the synchronization processing in a high-frequency wave area can be increased and the aliasing can be suppressed.
Abstract:
A color filter array includes a basic array pattern P1 constituted by a square array pattern corresponding to 3×3 pixels. In the color filter array, basic array pattern P1 is arranged in a horizontal direction and a vertical direction repeatedly. G filters that are brightness system pixels are arranged at the four corners and the center, that is, arranged on the both diagonal lines. The G filters are in each line of horizontal, vertical, and diagonal directions of the color filter array, and the color filter array includes a square array that corresponds to 2×2 pixels that are constituted by the G filters. A ratio of the number of G pixels that help most to obtain a brightness signal of the basic array pattern P1 is greater than each ratio of the number of R pixels and the number of B pixels that correspond to the color other than G.
Abstract:
Provided is a technique capable of correcting unique shading characteristics of a single-eye stereoscopic imaging device. A focal length is acquired. A one-dimensional correction table corresponding to the focal length is acquired from a plurality of stored one-dimensional correction tables. Shading correction is performed using the acquired one-dimensional correction table. An arbitrary pixel is selected from main pixels, a correction value corresponding to the position of the selected pixel is read from the acquired one-dimensional correction table for the main pixel, and shading correction is performed for the basis of the correction value and the value of the arbitrary pixel. This process is performed for all of the main pixels and the sub-pixels. A two-dimensional SD correction unit performs normal shading correction for the data subjected to the shading correction using a two-dimensional correction table.
Abstract:
Two kinds of color images, obtained by a solid-state imaging device, having different color tones are combined with each other. A first captured color image due to a first pixel group (pixels in which spectral sensitivities of color filters are wide) of the solid-state imaging device is processed. A second captured color image due to a second pixel group (pixels in which spectral sensitivities of color filters are narrow) is processed. The level difference between captured image signals of the pixels of the first pixel group and captured image signals of the pixels of the second pixel group, and due to the spectral sensitivity difference between the color filters in which the spectral sensitivities are wide and narrow is obtained (steps S1 and S2). The level difference is corrected. The first captured color image and the second captured color image are combined with each other.
Abstract:
Calculation of GR and GB color ratios in a local area uses a weighted average filter having weighting coefficients where the ratio of total sums of weighting coefficients for G and R pixels is 1:1, and weighted average filter having weighting coefficients where the ratio of total sum of weighting coefficients for G and B pixels is 1:1, respectively, on pixel lines in a horizontal direction and a vertical direction in a kernel. R and B pixel values are then calculated by interpolating the pixel value of a pixel to be processed with the G pixel value at the pixel position to be subjected to a demosaic process and the color ratio.
Abstract:
In the color imaging element and the imaging device according to an aspect of the present invention, a basic array pattern is repeatedly placed in a first direction and in a second direction, the basic array pattern includes four or more rectangular patterns each corresponding to 3×2 pixels each composed of a first filter, a color filter array includes therein grating filter lines surrounding the four directions of the rectangular pattern, the color filter array includes therein the first filters each disposed in each line in the first direction, in the second direction, in a third direction, and in a fourth direction, and the basic array pattern includes therein one or more second filters of each color, each disposed in each line in the first direction in the second direction.