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Image processing unit, image pickup device, image processing program, and image processing method

An image processing, image technology, applied in image data processing, signal generator with a single pickup device, image enhancement, etc., can solve problems such as reduced sample density and false color generation

Active Publication Date: 2017-06-13
TOKYO INST OF TECH +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the sample density of a single band decreases with the increase in the number of bands, false colors may occur during demosaicing

Method used

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  • Image processing unit, image pickup device, image processing program, and image processing method
  • Image processing unit, image pickup device, image processing program, and image processing method
  • Image processing unit, image pickup device, image processing program, and image processing method

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Embodiment Construction

[0047] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0048] figure 1 It is a block diagram showing a schematic configuration of an imaging device including an image processing unit according to an embodiment of the present invention.

[0049] The imaging device 10 is, for example, a multifunctional terminal with a digital camera, a digital video camera, or a camera, and is configured to include an imaging unit 11 and an image processing unit 12 .

[0050] The imaging unit 11 has an optical system 13 and an imaging element 14 . The optical system 13 has at least one lens, and forms a subject image. The imaging element 14 is, for example, a CCD area sensor or a CMOS area sensor, and captures the subject image formed by the optical system 13 to generate an original image.

[0051] The imaging element 14 has a multi-band filter array on the light receiving surface, and the multi-band filter array is formed by arranging fil...

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Abstract

In the present invention, an image processing unit includes an image acquisition unit, a correlation determination unit, a reference image generation unit, and an interpolation image generation unit. The image acquisition unit acquires an original image. The correlation determination unit determines whether the correlation between image components of a primary reference band and image components of bands other than the primary reference band is high or low. The reference image generation unit, on the basis of the correlation determination results, switches the method for interpolating missing pixels in the image components of the primary reference band and carries out interpolation, and thereby generates a primary reference image. The interpolation image generation unit uses the correlation determination results and the primary reference image to interpolate the missing pixels in at least a portion of the image components of the primary reference band.

Description

technical field [0001] The present invention relates to an image processing unit, a photographing device, an image processing program, and an image processing method for improving the resolution of a multi-band image. Background technique [0002] In a general digital camera, a single-board imaging element and a color filter array (CFA) are used. Therefore, color reproducibility can be improved by making the color filter array (CFA) multi-band. However, since the sample density of a single band decreases as the number of bands increases, false colors may occur during demosaicing. [0003] Therefore, it has been proposed to generate an interpolated image of image components of other bands by referring to image components of a band in which high-frequency components can be obtained with high precision among image components of a plurality of bands constituting a multi-band original image (see Patent Document 1 ). [0004] prior art literature [0005] patent documents [...

Claims

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Application Information

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IPC IPC(8): H04N9/07
CPCG06T3/4007H04N23/951H04N23/80H04N23/843H04N23/12G06T5/20H04N7/183
Inventor 菊地直纹野雄介禧久大辅田中正行奥富正敏
Owner TOKYO INST OF TECH
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