Apparatus and method for extracting object based on feature matching between segmented regions in images
First Claim
1. An apparatus for extracting an object from an image, comprising:
- an image input unit for receiving a query image including an object and an object extraction target image from which the object included in the query image is to be extracted;
an object position determination unit for determining a position of the object in the object extraction target image using pixel based color feature matching;
an image segmentation unit for segmenting each of the query image and the object extraction target image into a plurality of regions using image features including color or texture; and
an object region determination unit for performing matching between the segmented regions in the query image and the segmented regions in the determined position of the object in the object extraction target image using color or texture features and determining a final object region using similarity in spatial adjacency between matching regions obtained as a result of the matching.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus and method for extracting object based on feature matching between segmented regions in images are provided. The apparatus includes an image input unit for receiving a query image including an object and an object extraction target image from which the object included in the query image is to be extracted; an object position determination unit for determining a position of the object in the object extraction target image using pixel based color feature matching; an image segmentation unit for segmenting each of the query image and the object extraction target image into a plurality of regions using image features including color or texture; and an object region determination unit for performing matching between the segmented regions in the query image and the segmented regions in the determined position of the object in the object extraction target image using color or texture features and determining a final object region using similarity in spatial adjacency between matching regions obtained as a result of the matching. Accordingly, an image region of a particular object can be automatically extracted from an object extraction target image. Therefore, the apparatus can be applied to video editors, video authoring tool, object based video encoder, interactive video authoring tool, and the like.
62 Citations
32 Claims
-
1. An apparatus for extracting an object from an image, comprising:
-
an image input unit for receiving a query image including an object and an object extraction target image from which the object included in the query image is to be extracted; an object position determination unit for determining a position of the object in the object extraction target image using pixel based color feature matching; an image segmentation unit for segmenting each of the query image and the object extraction target image into a plurality of regions using image features including color or texture; and an object region determination unit for performing matching between the segmented regions in the query image and the segmented regions in the determined position of the object in the object extraction target image using color or texture features and determining a final object region using similarity in spatial adjacency between matching regions obtained as a result of the matching.
-
-
2. An apparatus for extracting an object from an image, comprising:
-
an image input unit for receiving a guery image including an object and an object extraction target image from which the object included in the guery image is to be extracted; an object position determination unit for determining a position of the object in the object extraction target image using pixel based color feature matching; an image segmentation unit for segmenting each of the guery image and the object extraction target image into a plurality of regions using image features including color or texture; and an object region determination unit for performing matching between the segmented regions in the guery image and the segmented regions in the determined position of the object in the object extraction target image using color or texture features and determining a final object region using similarity in spatial adjacency between matching regions obtained as a result of the matching, wherein the object position determination unit comprises; a color histogram calculator for calculating color histograms with respect to the query image and the object extraction target image; an image projector for replacing the pixel values with respect to the query image and the object extraction target image with ratio histograms; and a candidate object position determiner for determining candidate object positions in the object extraction target image having the ratio histogram. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method of extracting an object from an image, comprising the steps of:
-
(a) receiving a query image including an object and an object extraction target image from which the object included in the query image is to be extracted; (b) determining a position of the object in the object extraction target image using pixel based color feature matching; (c) segmenting the query image and the object extraction target image into a plurality of regions using image features including color or texture; and (d) performing matching between the segmented regions in the query image and the segmented regions in the determined position of the object in the object extraction target image using color or texture features and determining a final object region using similarity in spatial adjacency between matching regions obtained as a result of the matching. - View Dependent Claims (32)
-
-
15. A method of extracting an object from an image, comprising the steps of:
-
(a) receiving a query image including an object and an object extraction target image from which the object included in the query image is to be extracted; (b) determining a position of the object in the object extraction target image using pixel based color feature matching; (c) calculating color histograms with respect to the query image and the object extraction target image; (d) replacing the color histograms with respect to the query image and the object extraction target image with ratio histograms; (e) determining candidate object positions in the object extraction target image having the ratio histogram; (f) segmenting the query image and the object extraction target image into a plurality of regions using image features including color or texture; and (g) performing matching between the segmented regions in the guery image and the segmented regions in the determined position of the object in the object extraction target image using color or texture features and determining a final object region using similarity in spatial adjacency between matching regions obtained as a result of the matching. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
-
Specification