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US 2002/0118889 A1Published application
Image status estimating method, image correcting method, image correction apparatus, and storage medium
AssigneeFujitsu Limited
InventorMasayoshi Shimizu
Life of this patent
Estimating the term…
Abstract
An apparatus divides an original image into a plurality of areas, computes a characteristic amount for the plurality of areas, and computes a statistic amount for estimation of the status of an image using the characteristic amount. The statistic amount is compared with a predetermined value, a correcting parameter for correcting an image is determined based on the comparison result, and the original image is corrected using the correcting parameter. Thus, appropriate corrections can be made to images of various types and statuses.
Claims34
An image status estimating method for estimating a status of an image, comprising:
- dividing an image into a plurality of areas;
- computing a characteristic amount for each of the plurality of areas;
- and
- computing a statistic amount for estimation of the status of the image using the characteristic amount.
1 more element
An image correcting method for correcting an original image, comprising:
- dividing an image into a plurality of areas;
- computing a characteristic amount for each of the plurality of areas;
- computing a statistic amount for estimation of the status of the image using the characteristic amount;
- comparing the computed statistic amount with a predetermined value;
- determining a correcting parameter based on the comparison result;
- and
- correcting the original image using the correcting parameter.
4 more elements
An image correcting method for correcting an original image, comprising:
- generating a plurality of corrected images by correcting the original image using a plurality of different correcting parameters;
- dividing the plurality of corrected images respectively into a plurality of areas;
- computing characteristic amounts for the plurality of areas corresponding to the plurality of corrected images;
- computing a statistic amount indicating a status of a corrected image using the characteristic amount for the plurality of corrected images;
- and
- defining a corrected image obtained using a correcting parameter corresponding to a statistic amount closest to a predetermined value among the computed statistic amounts as an appropriate corrected image.
3 more elements
An image correcting method for correcting an original image, comprising:
- a first step of generating a corrected image for the original image using any correcting parameter;
- a second step of dividing the corrected image into a plurality of areas;
- a third step of computing a characteristic amount for each of the plurality of areas;
- a fourth step of computing a statistic amount indicating a status of a corrected image using the characteristic amount;
- a fifth step of defining the corrected image as an appropriate corrected image when the computed statistic amount is close to a predetermined value, generating a corrected image for the original image by changing a value of the correcting parameter when the computed statistic amount is not close to the predetermined value, and transferring control to said second step.
2 more elements
An image correction apparatus which corrects an original image, comprising:
- an area division unit dividing the original image into a plurality of areas;
- a characteristic amount computation unit computing a characteristic amount for each of the plurality of areas;
- a statistic amount computation unit computing a statistic amount indicating a status of an image using the characteristic amount;
- a correcting parameter setting unit comparing the computed statistic amount with a predetermined value, and determining a correcting parameter based on a comparison result;
- and
- an image correction unit correcting the original image using the correcting parameter.
3 more elements
An image correction apparatus which corrects an original image, comprising:
- a first image correction unit correcting the original image using a plurality of correcting parameters and generating a plurality of corrected images;
- an area division unit dividing each of the plurality of corrected images into a plurality of areas;
- a characteristic amount computation unit computing a characteristic amount for each of the plurality of areas;
- a statistic amount computation unit computing a statistic amount indicating a status of an image using the characteristic amount;
- and
- a second image correction unit determining a corrected image obtained using the correcting parameter corresponding to the statistic amount closest to a predetermined value among the plurality of computed statistic amounts as a correction result.
3 more elements
An image correction apparatus which corrects an original image, comprising:
- an area division unit dividing the original image into a plurality of areas;
- a first image correction unit correcting the original image divided into the plurality of areas using a plurality of correcting parameters, and generating a plurality of corrected images;
- a characteristic amount computation unit computing a characteristic amount for each of a plurality of areas of the corrected images;
- a statistic amount computation unit computing a statistic amount indicating a status of an image using the characteristic amount;
- and
- a second image correction unit defining a corrected image obtained using the correcting parameter corresponding to a statistic amount closest to a predetermined value among the plurality of computed statistic amounts as a correction result.
3 more elements
An image correction apparatus which corrects an original image, comprising:
- an area division unit dividing the original image into a plurality of areas;
- a characteristic amount computation unit computing a characteristic amount for each of the plurality of areas;
- a characteristic amount correction unit correcting the characteristic amount using a plurality of correcting parameters, and generating a plurality of corrected characteristic amounts;
- a statistic amount computation unit computing a statistic amount indicating a status of an image using the corrected characteristic amount;
- and
- an image correction unit correcting the original image using the correcting parameter corresponding to a statistic amount closest to a predetermined value.
3 more elements
An image correction apparatus which corrects an original image, comprising:
- a correcting parameter setting unit setting a correcting parameter;
- a first image correction unit correcting the original image using a correcting parameter set by said correcting parameter setting unit, and generating a corrected image;
- an area division unit dividing the corrected image into a plurality of areas;
- a characteristic amount computation unit computing a characteristic amount for each of the plurality of areas;
- a statistic amount computation unit computing a statistic amount indicating a status of an image using the characteristic amount;
- and
- a second image correction unit instructing said correcting parameter setting unit to set a new correcting parameter if the computed statistic amount is closer to a predetermined value than a previously obtained statistic amount, and defining a corrected image obtained using the correcting parameter corresponding to the previously obtained statistic amount as a correction result if the previously obtained statistic amount is closer to the predetermined value than the computed statistic amount.
4 more elements
An image correction apparatus which corrects an original image, comprising:
- an area division unit dividing the original image into a plurality of areas;
- a correcting parameter setting unit setting a correcting parameter;
- a first image correction unit correcting the original image divided into the plurality of areas using the correcting parameter set by said correcting parameter setting unit, and generating a corrected image;
- a characteristic amount computation unit computing a characteristic amount for each of the plurality of areas of the corrected image;
- a statistic amount computation unit computing a statistic amount indicating a status of an image using the characteristic amount;
- and
- a second image correction unit instructing said correcting parameter setting unit to set a new correcting parameter if the computed statistic amount is closer to a predetermined value than a previously obtained statistic amount, and defining a corrected image obtained using the correcting parameter corresponding to the previously obtained statistic amount as a correction result if the previously obtained statistic amount is closer to the predetermined value than the computed statistic amount.
4 more elements
An image correction apparatus which corrects an original image, comprising:
- an area division unit dividing the original image into a plurality of areas;
- a characteristic amount computation unit computing a characteristic amount for each of the plurality of areas;
- a correcting parameter setting unit setting a correcting parameter;
- an characteristic amount correction unit correcting the characteristic amount using the correcting parameter set by said correcting parameter setting unit, and generating a corrected characteristic amount;
- a statistic amount computation unit computing a statistic amount indicating a status of an image using the corrected characteristic amount;
- and
- a second image correction unit instructing said correcting parameter setting unit to set a new correcting parameter if the computed statistic amount is closer to a predetermined value than a previously obtained statistic amount, and defining a corrected image obtained using the correcting parameter corresponding to the previously obtained statistic amount as a correction result if the previously obtained statistic amount is closer to the predetermined value than the computed statistic amount.
4 more elements
An image correction apparatus which corrects an original image, comprising:
- area division means for dividing the original image into a plurality of areas;
- characteristic amount computation means for computing a characteristic amount for each of the plurality of areas;
- statistic amount computation means for computing a statistic amount indicating a status of an image using the characteristic amount;
- correcting parameter setting means for comparing the computed statistic amount with a predetermined value, and determining a correcting parameter based on a comparison result;
- and
- image correction means for correcting the original image using the correcting parameter.
3 more elements
An image correction apparatus which corrects an original image, comprising:
- first image correction means for correcting the original image using a plurality of correcting parameters and generating a plurality of corrected images;
- area division means for dividing each of the plurality of corrected images into a plurality of areas;
- characteristic amount computation means for computing a characteristic amount for each of the plurality of areas;
- statistic amount computation means for computing a statistic amount indicating a status of an image using the characteristic amount;
- and
- second image correction means for determining a corrected image obtained using the correcting parameter corresponding to the statistic amount closest to a predetermined value among the plurality of computed statistic amounts as a correction result.
3 more elements
An image correction apparatus which corrects an original image, comprising:
- area division means for dividing the original image into a plurality of areas;
- first image correction means for correcting the original image divided into the plurality of areas using a plurality of correcting parameters, and generating a plurality of corrected images;
- characteristic amount computation means for computing a characteristic amount for each of a plurality of areas of the corrected images;
- statistic amount computation for computing a statistic amount indicating a status of an image using the characteristic amount;
- and
- second image correction means for defining a corrected image obtained using the correcting parameter corresponding to a statistic amount closest to a predetermined value among the plurality of computed statistic amounts as a correction result.
3 more elements
An image correction apparatus which corrects an original image, comprising:
- area division means for dividing the original image into a plurality of areas;
- characteristic amount computation means for computing a characteristic amount for each of the plurality of areas;
- characteristic amount correction means for correcting the characteristic amount using a plurality of correcting parameters, and generating a plurality of corrected characteristic amounts;
- statistic amount computation means for computing a statistic amount indicating a status of an image using the corrected characteristic amount;
- and
- image correction means for correcting the original image using the correcting parameter corresponding to a statistic amount closest to a predetermined value.
3 more elements
An image correction apparatus which corrects an original image, comprising:
- correcting parameter setting means for setting a correcting parameter;
- first image correction means for correcting the original image using a correcting parameter set by said correcting parameter setting means, and generating a corrected image;
- area division means for dividing the corrected image into a plurality of areas;
- characteristic amount computation means for computing a characteristic amount for each of the plurality of areas;
- statistic amount computation means for computing a statistic amount indicating a status of an image using the characteristic amount;
- and
- second image correction means for instructing said correcting parameter setting means to set a new correcting parameter if the computed statistic amount is closer to a predetermined value than a previously obtained statistic amount, and defining a corrected image obtained using the correcting parameter corresponding to the previously obtained statistic amount as a correction result if the previously obtained statistic amount is closer to the predetermined value than the computed statistic amount.
4 more elements
An image correction apparatus which corrects an original image, comprising:
- area division means for dividing the original image into a plurality of areas;
- correcting parameter setting means for setting a correcting parameter;
- first image correction means for correcting the original image divided into the plurality of areas using the correcting parameter set by said correcting parameter setting means, and generating a corrected image;
- characteristic amount computation means for computing a characteristic amount for each of the plurality of areas of the corrected image;
- statistic amount computation means for computing a statistic amount indicating a status of an image using the characteristic amount;
- and
- second image correction means for instructing said correcting parameter setting means to set a new correcting parameter if the computed statistic amount is closer to a predetermined value than a previously obtained statistic amount, and defining a corrected image obtained using the correcting parameter corresponding to the previously obtained statistic amount as a correction result if the previously obtained statistic amount is closer to the predetermined value than the computed statistic amount.
4 more elements
An image correction apparatus which corrects an original image, comprising:
- area division means for dividing the original image into a plurality of areas;
- characteristic amount computation means for computing a characteristic amount for each of the plurality of areas;
- correcting parameter setting means for setting a correcting parameter;
- characteristic amount correction means for correcting the characteristic amount using the correcting parameter set by said correcting parameter setting means, and generating a corrected characteristic amount;
- statistic amount computation means for computing a statistic amount indicating a status of an image using the corrected characteristic amount;
- and
- second image correction means for instructing said correcting parameter setting means to set a new correcting parameter if the computed statistic amount is closer to a predetermined value than a previously obtained statistic amount, and defining a corrected image obtained using the correcting parameter corresponding to the previously obtained statistic amount as a correction result if the previously obtained statistic amount is closer to the predetermined value than the computed statistic amount.
4 more elements
A computer-readable storage medium storing a program used to direct a computer for estimating a status of an image to perform a process, comprising:
- dividing an image into a plurality of areas;
- computing a characteristic amount for each of the plurality of areas;
- and
- computing a statistic amount for estimation of the status of the image using the characteristic amount.
1 more element
A computer-readable storage medium storing a program used to direct a computer for correcting an original image to perform a process, comprising:
- dividing an image into a plurality of areas;
- computing a characteristic amount for each of the plurality of areas;
- computing a statistic amount for estimation of the status of the image using the characteristic amount;
- comparing the computed statistic amount with a predetermined value;
- determining a correcting parameter based on the comparison result;
- and
- correcting the original image using the correcting parameter.
4 more elements
A computer-readable storage medium storing a program used to direct a computer for correcting an original image to perform a process, comprising:
- generating a plurality of corrected images by correcting the original image using a plurality of different correcting parameters;
- dividing the plurality of corrected images respectively into a plurality of areas;
- computing characteristic amounts for the plurality of areas corresponding to the plurality of corrected images;
- computing a statistic amount indicating a status of a corrected image using the characteristic amount for a plurality of corrected images;
- and
- defining a corrected image obtained using a correcting parameter corresponding to a statistic amount closest to a predetermined value among the computed statistic amounts as an appropriate corrected image.
3 more elements
Dependencies are inferred from the claim text.