Information processing apparatus, information processing method, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorTakeshi Noda
Life of this patent
Estimating the term…
Abstract
An information processing apparatus has a decomposition unit that decomposes an image into multiple frequency component images, a reduction unit that reduces linear noise included in the frequent component images, and a reconstruction unit that reconstructs the frequency component images with reduced linear noise.
Claims21
-16. (canceled)
An image processing apparatus for reducing line noise along a direction in an image, the apparatus comprising:
- a processing unit configured to perform frequency decomposition processing on an input image to obtain frequency components of the input image, and to perform weighted average processing in the direction on the frequency components to obtain processed frequency components;
- an extraction unit configured to extract line noise data based on the obtained processed frequency components;
- and
- an obtaining unit configured to obtain a noise-reduced image by reducing line noise in the input image based on the extracted line noise data.
An image processing apparatus for reducing line noise along a direction in an image, the apparatus comprising:
- a processing unit configured to perform weighted average processing on an input image to obtain a processed input image, and to perform frequency decomposition processing on the processed input image to obtain processed frequency components of the processed input image;
- an extraction unit configured to extract line noise data based on the obtained processed frequency components;
- and
- an obtaining unit configured to obtain a noise-reduced image by reducing line noise in the input image based on the extracted line noise data.
An imaging apparatus for reducing line noise along a direction in an image, the apparatus comprising:
- an X-ray detector configured to obtain an input image of an object;
- a processing unit configured to perform frequency decomposition processing on the input image to obtain frequency components of the input image, and to perform weighted average processing in the direction on the frequency components to obtain processed frequency components;
- an extraction unit configured to extract line noise data based on the obtained processed frequency components;
- and
- an obtaining unit configured to obtain a noise-reduced image by reducing line noise in the input image based on the extracted line noise data.
An imaging apparatus for reducing line noise along a direction in an image, the apparatus comprising:
- an X-ray detector configured to obtain an input image of an object;
- a processing unit configured to perform weighted average processing on the input image to obtain a processed input image, and to perform frequency decomposition processing on the processed input image to obtain processed frequency components of the processed input image;
- an extraction unit configured to extract line noise data based on the obtained processed frequency components;
- and
- an obtaining unit configured to obtain a noise-reduced image by reducing line noise in the input image based on the extracted line noise data.
An image processing system for reducing line noise along a direction in an image, the system comprising:
- a processing unit configured to perform frequency decomposition processing on an input image to obtain frequency components of the input image, and to perform weighted average processing in the direction on the frequency components to obtain processed frequency components;
- an extraction unit configured to extract line noise data based on the obtained processed frequency components;
- and
- an obtaining unit configured to obtain a noise-reduced image by reducing line noise in the input image based on the extracted line noise data.
An image processing system for reducing line noise along a direction in an image, the system comprising:
- a processing unit configured to perform weighted average processing on an input image to obtain a processed input image, and to perform frequency decomposition processing on the processed input image to obtain processed frequency components of the processed input image;
- an extraction unit configured to extract line noise data based on the obtained processed frequency components;
- and
- an obtaining unit configured to obtain a noise-reduced image by reducing line noise in the input image based on the extracted line noise data.
An image processing method that reduces line noise along a direction in an image and is executed with an image processing apparatus, the method comprising:
- a processing step of performing frequency decomposition processing on an input image to obtain frequency components of the input image, and performing weighted average processing in the direction on the frequency components to obtain processed frequency components;
- an extraction step of extracting line noise data based on the obtained processed frequency components;
- and
- an obtaining step of obtaining a noise-reduced image by reducing line noise in the input image based on the extracted line noise data.
An image processing method that reduces line noise along a direction in an image and is executed with an image processing apparatus, the method comprising:
- a processing step of performing weighted average processing on an input image to obtain a processed input image, and performing frequency decomposition processing on the processed input image to obtain processed frequency components of the processed input image;
- an extraction step of extracting line noise data based on the obtained processed frequency components;
- and
- an obtaining step of obtaining a noise-reduced image by reducing line noise in the input image based on the extracted line noise data.
A non-transitory computer-readable storage medium storing a computer program which makes a computer execute an image processing method that reduces line noise along a direction in an image and is executed with an image processing apparatus, the method comprising:
- a processing step of performing frequency decomposition processing on an input image to obtain frequency components of the input image, and performing weighted average processing in the direction on the frequency components to obtain processed frequency components;
- an extraction step of extracting line noise data based on the obtained processed frequency components;
- and
- an obtaining step of obtaining a noise-reduced image by reducing line noise in the input image based on the extracted line noise data.
A non-transitory computer-readable storage medium storing a computer program which makes a computer execute an image processing method that reduces line noise along a direction in an image and is executed with an image processing apparatus, the method comprising:
- a processing step of performing weighted average processing on an input image to obtain a processed input image, and performing frequency decomposition processing on the processed input image to obtain processed frequency components of the processed input image;
- an extraction step of extracting line noise data based on the obtained processed frequency components;
- and
- an obtaining step of obtaining a noise-reduced image by reducing line noise in the input image based on the extracted line noise data.
Dependencies are inferred from the claim text.