Image processor, image display device, image processing method, and image display method
AssigneeSeiko Epson Corporation
InventorMasashi KANAI
Life of this patent
Estimating the term…
Abstract
An image processor that corrects an image signal, includes: a brightness component correction amount calculating section that calculates the amount of correction of a brightness component of the image signal only for an image signal in a predetermined brightness level range of a predetermined spatial frequency band; and a brightness component correcting section that corrects the brightness component of the image signal by using the amount of correction calculated by the brightness component correction amount calculating section.
Claims17
An image processor that corrects an image signal, comprising:
- a brightness component correction amount calculating section that calculates the amount of correction of a brightness component of the image signal only for an image signal in a predetermined brightness level range of a predetermined spatial frequency band;
- and
- a brightness component correcting section that corrects the brightness component of the image signal by using the amount of correction calculated by the brightness component correction amount calculating section.
An image processor that corrects an image signal, comprising:
- a brightness component correction amount calculating section that calculates the amount of correction of a brightness component of the image signal in a predetermined spatial frequency band;
- and
- a brightness component correcting section that corrects the brightness component of the image signal by using the amount of correction calculated by the brightness component correction amount calculating section,
- wherein the amount of correction in region having a predetermined brightness level is larger than the amount of correction in the other region.
An image display device that displays an image on the basis of an image signal, comprising:
- an image processing unit that corrects an image signal of an image in which a spatial frequency changes in a first direction of the image, the level of a brightness component of the image signal changes in a second direction crossing the first direction, and an AC component of the brightness component is entirely uniform;
- and
- an image display unit that displays an image on the basis of the image signal corrected by the image processor,
- wherein the image display unit displays an image in which an AC component of the brightness is not uniform over a predetermined brightness level range of a predetermined spatial frequency band.
An image processing method of correcting an image signal, comprising:
- calculating the amount of correction of a brightness component of the image signal only for an image signal in a predetermined brightness level range of a predetermined spatial frequency band;
- and
- correcting the brightness component of the image signal by using the amount of correction calculated in the calculating of the amount of correction of the brightness component.
An image display method of displaying an image on the basis of an image signal, comprising:
- calculating the amount of correction of a brightness component of the image signal only for an image signal in a predetermined brightness level range of a predetermined spatial frequency band;
- correcting the brightness component of the image signal by using the amount of correction calculated in the calculating of the amount of correction of the brightness component;
- and
- displaying an image on the basis of the image signal corrected in the correcting of the brightness component.
An image display method of displaying an image on the basis of an image signal, comprising:
- calculating the amount of correction of a brightness component of the image signal in a predetermined spatial frequency band;
- correcting the brightness component of the image signal by using the amount of correction calculated in the calculating of the amount of correction of the brightness component;
- and
- displaying an image on the basis of the image signal corrected in the correcting of the brightness component,
- wherein the amount of correction in region having a predetermined brightness level is larger than the amount of correction in the other region.
An image display method of displaying an image on the basis of an image signal, comprising:
- performing image processing for correcting an image signal of an image in which a spatial frequency changes in a first direction of the image, the level of a brightness component of the image signal changes in a second direction crossing the first direction, and an AC component of the brightness component is entirely uniform ;
- and
- displaying an image on the basis of the image signal corrected in the performing of the image processing,
- wherein in the displaying of the image, an image is displayed in which an AC component of the brightness is not uniform over a predetermined brightness level range of a predetermined spatial frequency band.
Dependencies are inferred from the claim text.