Image-acquisition apparatus
AssigneeOlympus Corporation
InventorHideya Aragaki
Life of this patent
Estimating the term…
Abstract
An image-acquisition apparatus is provided, including a correction-coefficient calculating unit 109 for obtaining an image signal subjected to prescribed image processing and creating, in each region, a first correction-coefficient group formed of a plurality of correction coefficients corresponding to a plurality of pixels; a correction-coefficient-group adjusting unit 110 for creating a second correction-coefficient group by adjusting the first correction-coefficient group using the image signal from an image-acquisition device or a feature of the image signal subjected to the image processing; and a grayscale converter 111 for performing grayscale conversion processing in each region using the second correction-coefficient group.
Claims17
An image-acquisition apparatus for performing grayscale conversion processing on an image signal from an image-acquisition device, in each of regions in an image represented by the image signal, comprising:
- an image processing part for performing image processing on the image signal from the image-acquisition device;
- a reduced-image generating part for reducing the image signal, after being subjected to the image processing, with a prescribed reduction ratio to generate a reduced-image signal;
- a correction-coefficient-group calculating part for creating a first correction-coefficient group formed of a plurality of correction coefficients corresponding to a plurality of pixels in the image signal after being subjected to the image processing, in each of the regions, using the reduced-image signal;
- a correction-coefficient-group adjusting part for creating a second correction-coefficient group by adjusting the first correction-coefficient group by using the image signal from the image-acquisition device or a feature of the image signal after being subjected to the image processing;
- and
- a grayscale converting part for performing the grayscale conversion processing in each of the regions by using the second correction-coefficient group.
A non-transitory computer-readable storage medium having stored thereon an image processing program for executing grayscale conversion processing on an image signal from an image-acquisition device, in each of regions of an image represented by the image signal, the image processing program causing a computer to execute:
- a first step of performing image processing on the image signal from the image-acquisition device;
- a second step of reducing the image signal subjected to the image processing by a prescribed reduction ratio to generate a reduced-image signal;
- a third step of creating, in each of the regions, a first correction-coefficient group formed of a plurality of correction coefficients corresponding to a plurality of pixels in the image signal subjected to the image processing, by using the reduced-image signal;
- a fourth step of creating a second correction-coefficient group by adjusting the first correction-coefficient group using the image signal from the image-acquisition device or a feature of the image signal subjected to the image processing;
- and
- a fifth step of performing the grayscale conversion processing in each of the regions using the second correction-coefficient group.
Dependencies are inferred from the claim text.