Image capturing apparatus, image capturing method, image processing apparatus, image processing method, and program storing medium using spatial frequency transfer characteristics
AssigneeFUJIFILM Corporation
InventorShuji Ono
Life of this patent
Estimating the term…
Abstract
An image capturing apparatus includes an optical system that forms an image of light and a gradation processing section that converts gradation of a captured image captured through the optical system in accordance with a spatial frequency transfer characteristic of the optical system. The image capturing apparatus may further include a light receiving section that receives light from a subject through the optical system, and the gradation processing section may convert gradation of a captured image obtained by light received by the light receiving section in accordance with a spatial frequency transfer characteristic at the position at which the light receiving section is provided.
Claims26
An image capturing apparatus comprising a gradation processing section that converts gradation of a captured image captured through an optical system forming an image of light in accordance with a spatial frequency transfer characteristic of the optical system, further comprising a light receiving section that receives light from a subject through the optical system, wherein
- the gradation processing section converts the gradation of the captured image obtained by the light received by the light receiving section in accordance with the spatial frequency transfer characteristic at a position at which the light receiving section is provided, wherein the gradation processing section converts the captured image into an image having a dynamic range having a size determined by the spatial frequency transfer characteristic.
An image capturing apparatus comprising a gradation processing section that converts gradation of a captured image captured through an optical system forming an image of light in accordance with a spatial frequency transfer characteristic of the optical system, wherein the gradation processing section quantizes an image component of a different spatial frequency domain included in the captured image in quantization width according to the spatial frequency transfer characteristic of the optical system.
An image capturing method comprising converting gradation of a captured image captured through an optical system forming an image of light in accordance with a spatial frequency transfer characteristic of the optical system further comprising
- receiving light from a subject through the optical system,
- gradation processing including converting the gradation of the captured image obtained by the light received during light receiving in accordance with a spatial frequency transfer characteristic at a position at which the light receiving is provided;
- and
- wherein the gradation processing further includes converting the captured image into an image having a dynamic range having a size determined by the spatial frequency transfer characteristic.
A computer readable medium storing a program for an image capturing apparatus,
- the program making a computer functions as a gradation processing section that converts gradation of a captured image captured through an optical system forming an image of light in accordance with a spatial frequency transfer characteristic of the optical system, further causing the computer to function as
- a light receiving section that receives light from a subject through the optical system, wherein
- the gradation processing section converts the gradation of the captured image obtained by the light received by the light receiving section in accordance with the spatial frequency transfer characteristic at a position at which the light receiving section is provided;
- and
- wherein the gradation processing section converts the captured image into an image having a dynamic range having a size determined by the spatial frequency transfer characteristic.
An image processing apparatus comprising:
- a spatial frequency transfer characteristic identifying section that identifies a spatial frequency transfer characteristic of an image capturing section on the basis of a spatial frequency component of a captured image captured by the image capturing section;
- and
- a gradation processing section that converts gradation of the captured image in accordance with the spatial frequency transfer characteristic identified by the spatial frequency transfer characteristic identifying section, wherein the gradation processing section converts the captured image into an image having a dynamic range having a size determined by the spatial frequency transfer characteristic.
An image processing apparatus comprising:
- a spatial frequency transfer characteristic identifying section that identifies a spatial frequency transfer characteristic of an image capturing section on the basis of a spatial frequency component of a captured image captured by the image capturing section;
- and
- a gradation processing section that converts gradation of the captured image in accordance with the spatial frequency transfer characteristic identified by the spatial frequency transfer characteristic identifying section, wherein the gradation processing section quantizes an image component of a different spatial frequency domain included in the captured image in quantization width according to the spatial frequency transfer characteristic identified by the spatial frequency transfer characteristic identifying section.
An image processing method comprising:
- identifying a spatial frequency transfer characteristic of an image capturing section on the basis of a spatial frequency component of a captured image captured by the image capturing section;
- and
- converting gradation of the captured image in accordance with the spatial frequency transfer characteristic identified in the spatial frequency transfer characteristic identifying step;
- and
- wherein converting gradation includes converting the captured image into an image having a dynamic range having a size determined by the spatial frequency transfer characteristic.
A computer readable medium storing a program for an image processing apparatus, the program making a computer function as:
- a spatial frequency transfer characteristic identifying section that identifies a spatial frequency transfer characteristic of an image capturing section on the basis of a spatial frequency component of a captured image captured by the image capturing section;
- and
- a gradation processing section that converts gradation of the captured image in accordance with the spatial frequency transfer characteristic identified by the spatial frequency transfer characteristic identifying section;
- and
- wherein the gradation processing section converts the captured image into an image having a dynamic range having a size determined by the spatial frequency transfer characteristic.
An image capturing method comprising converting gradation of a captured image captured through an optical system forming an image of light in accordance with a spatial frequency transfer characteristic of the optical system further comprising
- receiving light from a subject through the optical system,
- gradation processing including converting a gradation of the captured image obtained by the light received in the light receiving in accordance with the spatial frequency transfer characteristic at a position at which the light receiving is provided;
- and
- wherein the gradation processing further includes converting the captured image into an image having a dynamic range having a size determined by the spatial frequency transfer characteristic;
- and
- wherein the gradation processing includes quantizing an image component of a different spatial frequency domain included in the captured image in quantization width according to the spatial frequency transfer characteristic of the optical system.
A computer readable medium storing a program for an image capturing apparatus,
- the program making a computer functions as a gradation processing section that converts gradation of a captured image captured through an optical system forming an image of light in accordance with a spatial frequency transfer characteristic of the optical system, further causing the computer to function as
- a light receiving section that receives light from a subject through the optical system, wherein
- the gradation processing section converts the gradation of the captured image obtained by the light received by the light receiving section in accordance with the spatial frequency transfer characteristic at a position at which the light receiving section is provided;
- and
- wherein the gradation processing section converts the captured image into an image having a dynamic range having a size determined by the spatial frequency transfer characteristic;
- and
- wherein the gradation processing section quantizes an image component of a different spatial frequency domain included in the captured image in quantization width according to the spatial frequency transfer characteristic of the optical system.
An image processing method comprising:
- identifying a spatial frequency transfer characteristic of an image capturing section on the basis of a spatial frequency component of a captured image captured by the image capturing section;
- and
- converting gradation of the captured image in accordance with the spatial frequency transfer characteristic identified in the spatial frequency transfer characteristic identifying step;
- and
- wherein the converting gradation includes converting the captured image into an image having a dynamic range having a size determined by the spatial frequency transfer characteristic;
- and
- wherein the converting gradation quantizes an image component of a different spatial frequency domain included in the captured image in quantization width according to the spatial frequency transfer characteristic identified by the spatial frequency transfer characteristic identifying section.
A computer readable medium storing a program for an image processing apparatus, the program making a computer function as:
- a spatial frequency transfer characteristic identifying section that identifies a spatial frequency transfer characteristic of an image capturing section on the basis of a spatial frequency component of a captured image captured by the image capturing section;
- and
- a gradation processing section that converts gradation of the captured image in accordance with the spatial frequency transfer characteristic identified by the spatial frequency transfer characteristic identifying section;
- and
- wherein the gradation processing section converts the captured image into an image having a dynamic range having a size determined by the spatial frequency transfer characteristic;
- and
- wherein the gradation processing section quantizes an image component of a different spatial frequency domain included in the captured image in quantization width according to the spatial frequency transfer characteristic identified by the spatial frequency transfer characteristic identifying section.
Dependencies are inferred from the claim text.