US 8,009,933 B2 · Fast method of super-resolution processing · patentgrep

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Abstract

A method is provided for speeding up a super-resolution processing by reducing the number of times for convolution operation that is the number of times for estimation calculation. A fast method of super-resolution processing for speeding up a super-resolution processing that estimates a high-resolution image from multiple low-resolution images with a displacement, which comprising: a first step for performing a registration of said multiple low-resolution images in a high-resolution image space and treating all pixels of said multiple low-resolution images after the registration as pixels sampled at unequal interval within said high-resolution image space; a second step for dividing said high-resolution image space into multiple small areas with a predefined size; and a third step for defining an estimated value at a predefined representative position within said small area as an estimated value of all pixels that exist within said small area for each small area divided in said second step.

Claims14

Dependent claims

A method of estimating, using a processor, a high-resolution image from multiple low-resolution images with a displacement, the method comprising:

performing a registration of said multiple low-resolution images in a high-resolution image space;
dividing said high-resolution image space into a plurality of areas with a predefined size;
and
defining estimated pixel values of all pixels that exist within at least one of said plurality of areas so as to be the same as an estimated pixel value of a pixel at a predefined representative position within said at least one of said plurality of areas.

1 more element

A method of estimating, using a processor, a high-resolution image from multiple low-resolution images with a displacement, the method comprising:

performing a registration of said multiple low-resolution images in a high-resolution image space;
dividing said high-resolution image space into a plurality of areas with a predefined size;
and
defining estimated pixel values of all pixels that exist within at least one of said plurality of areas so as to be the same as an estimated pixel value of a pixel at a predefined representative position within said at least one of said plurality of areas,
wherein said at least one plural area has a shape of a square.

2 more elements

A method of estimating, using a processor, a high-resolution image from multiple low-resolution images with a displacement, the method comprising:

performing a registration of said multiple low-resolution images in a high-resolution image space;
dividing said high-resolution image space into a plurality of areas with a predefined size;
defining estimated pixel values of all pixels that exist within at least one of said plurality of areas so as to be the same as an estimated pixel value of a pixel at a predefined representative position within said at least one of said plurality of areas,
wherein said at least one of said plurality of areas has a shape of a square and a size of one side of said square is one integer-th of a pixel size of said high-resolution image.

1 more element

A method of estimating, using a processor, a high-resolution image from multiple low-resolution images with a displacement, the method comprising:

performing a registration of said multiple low-resolution images in a high-resolution image space;
dividing said high-resolution image space into a plurality of areas with a predefined size;
and
defining estimated pixel values of all pixels that exist within at least one of said plurality of areas so as to be the same as an estimated pixel value of a pixel at a predefined representative position within said at least one of said plurality of areas,
wherein said estimated pixel value of said pixel at said predefined representative position is calculated based on a convolution of said high-resolution image and a point-spread function obtained from a camera model.

2 more elements

A method of estimating, using a processor, a high-resolution image from multiple low-resolution images with a displacement, the method comprising:

performing a registration of said multiple low-resolution images in a high-resolution image space;
dividing said high-resolution image space into a plurality of areas with a predefined size;
and
defining estimated pixel values of all pixels that exist within at least one of said plurality of areas so as to be the same as an estimated pixel value of a pixel at a predefined representative position within said at least one of said plurality of areas,
wherein said at least one of said plurality of areas has a shape of a square and said estimated pixel value of said predefined representative position is calculated based on a convolution of said high-resolution image and a point-spread function obtained from a camera model.

2 more elements

A method of estimating, using a processor, a high-resolution image from multiple low-resolution images with a displacement, the method comprising:

performing a registration of said multiple low-resolution images in a high-resolution image space;
dividing said high-resolution image space into a plurality of areas with a predefined size;
and
defining estimated pixel values of all pixels that exist within at least one of said plurality of areas so as to be the same as an estimated pixel value of a pixel at a predefined representative position within said at least one of said plurality of areas,
wherein said at least one of said plurality of areas has a shape of a square, a size of one side of said square is one integer-th of a pixel size of said high-resolution image and said estimated pixel value of said predefined representative position is calculated based on a convolution of said high-resolution image and a point-spread function obtained from a camera model.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/666,605Filed 17 Oct 2005
Priority: JP 2004-31615429 Oct 2004
Published: US 2009/0080805 A126 Mar 2009
Granted: 30 Aug 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H04N 1/3935
Enlarging or reducing: with modification of image resolution, i.e. determining the values of picture elements at new relative positions
G06T 3/4069
Based on super-resolution, i.e. the output image resolution being higher than the sensor resolution: by subpixel displacements
H04N
Pictorial communication
G06T
Image data processing or generation, in general

Family

US 2009/0080805 A1Pre-grant publication · published 26 Mar 2009
US 8,009,933 B2This patent

From the US filing history. Foreign family members aren’t listed.

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