Image processing apparatus, method, and program
First Claim
1. An image processing method comprising:
- acquiring an image including an object and a background;
acquiring an initial region including an object region containing the object and a background region containing the background;
setting a target region including the initial region in the image;
setting a local region containing a pixel of interest and included in the target region;
calculating local object reliability indicating a degree that the pixel of interest seems to belong to the object region and local background reliability indicating a degree that the pixel of interest seems to belong to the background region by using information of a luminance or color of a local object region and information of a luminance or color of a local background region, respectively, the local object region including the object region and the local region and the local background region including the background region and the local region;
deciding that the pixel of interest belongs to one of the object region and the background region, based on the local object reliability and the local background reliability; and
outputting region information representing the one of the object region and the background region which is decided by the deciding.
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Accused Products
Abstract
Image processing method includes acquiring image including object and background, acquiring initial region including object region containing object and background region containing background, setting target region including initial region in image, setting local region containing pixel of interest, calculating local object reliability indicating a degree that pixel of interest seems to belong to object region and local background reliability indicating degree that pixel of interest seems to belong to background region by using information of luminance or color of local object region and information of luminance or color of local background region, respectively, local object region including object region and local region and local background region including background region and local region, deciding that pixel of interest belongs to one of object region and background region, based on local object reliability and local background reliability, and outputting region information representing one of object region and background region.
43 Citations
28 Claims
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1. An image processing method comprising:
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acquiring an image including an object and a background;
acquiring an initial region including an object region containing the object and a background region containing the background;
setting a target region including the initial region in the image;
setting a local region containing a pixel of interest and included in the target region;
calculating local object reliability indicating a degree that the pixel of interest seems to belong to the object region and local background reliability indicating a degree that the pixel of interest seems to belong to the background region by using information of a luminance or color of a local object region and information of a luminance or color of a local background region, respectively, the local object region including the object region and the local region and the local background region including the background region and the local region;
deciding that the pixel of interest belongs to one of the object region and the background region, based on the local object reliability and the local background reliability; and
outputting region information representing the one of the object region and the background region which is decided by the deciding. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An image processing method comprising:
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acquiring an image;
obtaining a label image having a same size as that of the acquired image;
setting a target region in the acquired image;
setting a local region containing a pixel of interest and included in the target region;
calculating, for each local label value, reliability indicating a degree that a pixel of interest seems to belong to a label value by using information of a luminance or color of a local label value region, the local label value region having the label value and included in the local region;
deciding, based on the reliability for each local label value, a label value to which the pixel of interest belongs, and applying, to the target region, the deciding the label value; and
outputting a label image obtained by the deciding the label value. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An image processing apparatus comprising:
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an acquiring unit configured to acquire an image including an object and a background, and an initial region including an object region containing the object and a background region containing the background;
a setting unit configured to set a target region including the initial region in the image, and a local region containing a pixel of interest and included in the target region;
a calculating unit configured to calculate local object reliability indicating a degree that the pixel of interest seems to belong to the object region and local background reliability indicating a degree that the pixel of interest seems to belong to the background region by using information of a luminance or color of a local object region and information of a luminance or color of a local background region, respectively, the local object region including the object region and the local region and the local background region including the background region and the local region;
a deciding unit configured to decide that the pixel of interest belongs to one of the object region and the background region, based on the local object reliability and the local background reliability; and
an outputting unit configured to output region information representing the one of the object region and the background region which is decided by the deciding unit. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. An image processing apparatus comprising:
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an acquiring unit configured to acquire an image;
an obtaining unit configured to obtain a label image having a same size as that of the acquired image;
a setting unit configured to set a target region in the acquired image and a local region containing a pixel of interest and included in the target region;
a calculating unit configured to calculate, for each local label value, reliability indicating a degree that a pixel of interest seems to belong to a label value by using information of a luminance or color of a local label value region, the local label value region having the label value and included in the local region;
a deciding unit configured to decide, based on the reliability for each local label value, a label value to which the pixel of interest belongs; and
an outputting unit configured to output a label image obtained by the deciding unit. - View Dependent Claims (22, 23, 24, 25, 26)
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27. An image processing program stored in a computer readable medium comprising:
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means for instructing a computer to acquire an image including an object and a background and an initial region including an object region containing the object and a background region containing the background;
means for instructing a computer to set a target region including the initial region in the image, and a local region containing a pixel of interest and included in the target region;
means for instructing a computer to calculate local object reliability indicating a degree that the pixel of interest seems to belong to the object region and local background reliability indicating a degree that the pixel of interest seems to belong to the background region by using information of a luminance or color of a local object region and information of a luminance or color of a local background region, respectively, the local object region including the object region and the local region and the local background region including the background region and the local region;
means for instructing a computer to decide that the pixel of interest belongs to one of the object region and the background region, based on the local object reliability and the local background reliability; and
means for instructing a computer to output region information representing the one of the object region and the background region which is decided by the deciding means.
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28. An image processing program stored in a computer readable medium comprising:
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means for instructing a computer to acquire an image;
means for instructing a computer to obtain a label image having a same size as that of the acquired image;
means for instructing a computer to set a target region in the acquired image and a local region containing a pixel of interest and included in the target region;
means for instructing a computer to calculate, for each local label value, reliability indicating a degree that a pixel of interest seems to belong to a label value by using information of a luminance or color of a local label value region, the local label value region having the label value and included in the local region;
means for instructing a computer to decide, based on the reliability for each local label value, a label value to which the pixel of interest belongs; and
means for instructing a computer to output a label image obtained by the deciding means.
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Specification