Method for creating high resolution color image, system for creating high resolution color image and program creating high resolution color image
First Claim
1. A high resolution color image reconstruction method which reconstructs a high resolution color image based on a single input image or a sequence of multiple input images captured by an image capturing device employing an image sensor and a color filter array, said high resolution color image reconstruction method characterized by reconstructing said high resolution color image having a predetermined resolution equal to or larger than a physical resolution of said image capturing device;
- and comprising the step of;
conducting an image reconstruction process based on prior knowledge that relates to a model of an image capturing system or a subject including known or unknown displacement or deformation generated between said sequence of multiple input images, and then reconstructing said high resolution color image in which even a high spatial frequency component contained in said subject is truly reproduced and occurrence of false color is suppressed.
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Abstract
A limitation in the physical resolution of an image sensor offers a motivation to improve the resolution of an image. Super-resolution is mainly applied to gray scale images, and it has not been thoroughly investigated yet that a high resolution color image is reconstructed from an image sensor having a color filter array. An object of the invention is to directly reconstruct a high resolution color image from color mosaic obtained by an image sensor having a color filter array. A high resolution color image reconstruction method according to the invention is based on novel technique principles of color image reconstruction that an increase in resolution and demosaicing are performed at the same time. The verification and effective implement of the invention are also described.
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Citations
37 Claims
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1. A high resolution color image reconstruction method which reconstructs a high resolution color image based on a single input image or a sequence of multiple input images captured by an image capturing device employing an image sensor and a color filter array,
said high resolution color image reconstruction method characterized by reconstructing said high resolution color image having a predetermined resolution equal to or larger than a physical resolution of said image capturing device; - and
comprising the step of;
conducting an image reconstruction process based on prior knowledge that relates to a model of an image capturing system or a subject including known or unknown displacement or deformation generated between said sequence of multiple input images, and then reconstructing said high resolution color image in which even a high spatial frequency component contained in said subject is truly reproduced and occurrence of false color is suppressed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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11. A high resolution color image reconstruction program which reconstructs a high resolution color image based on a single input image or a sequence of multiple input images captured by an image capturing device employing an image sensor and a color filter array,
said high resolution color image reconstruction program is executable with a computer, comprising the function of: -
reconstructing said high resolution color image having a predetermined resolution equal to or larger than a physical resolution of said image capturing device;
and further comprising the function of;
conducting an image reconstruction process based on prior knowledge that relates to a model of an image capturing system or a subject including known or unknown displacement or deformation generated between said sequence of multiple input images, and then reconstructing said high resolution color image in which even a high spatial frequency component contained in said subject is truly reproduced and occurrence of false color is suppressed. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 32, 33, 34, 35, 36, 37)
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Specification