IMAGE SIGNATURE EXTRACTION DEVICE
1 Assignment
0 Petitions
Accused Products
Abstract
The image signature extraction device includes an extraction unit and a generation unit. The extraction unit extracts region features from respective sub-regions in an image in accordance with a plurality of pairs of sub-regions in the image, the pairs of sub-regions including at least one pair of sub-regions in which both a combination of shapes of two sub-regions of the pair and a relative position between the two sub-regions of the pair differ from those of at least one of other pairs of sub-regions, and being classified into a plurality of types based on a combination of shapes of two sub-regions and a relative position between the two sub-regions of each of the pairs. The generation unit generates an image signature to be used for identifying the image based on the extracted region features of the respective sub-regions.
-
Citations
102 Claims
-
1-83. -83. (canceled)
-
84. An image signature extraction device, comprising:
-
a calculation unit that calculates region features from two sub-regions in an image, the two sub-regions being associated with each dimension composing an image signature, the image signature being information for identifying an image; and a quantization unit that quantizes difference values between the region features, using a parameter defined independently for each type, wherein the dimension is categorized into one of the types different from a type of at least one other dimension. - View Dependent Claims (85, 86, 87, 88, 89, 90, 91, 92)
-
-
93. An image signature extraction method, comprising:
-
calculating region features from two sub-regions in an image, the two sub-regions being associated with each dimension composing an image signature, the image signature being information for identifying an image; and quantizing difference values between the region features, using a parameter defined independently for each type, wherein the dimension is categorized into one of the types different from a type of at least one other dimension. - View Dependent Claims (94, 95, 96, 97, 98, 99, 100, 101)
-
-
102. A computer-readable medium storing a program comprising instructions for causing a computer to function as:
-
a calculation unit that calculates region features from two sub-regions in an image, the two sub-regions being associated with each dimension composing an image signature, the image signature being information for identifying an image; and a quantization unit that quantizes difference values between the region features, using a parameter defined independently for each type, wherein the dimension is categorized into one of the types different from a type of at least one other dimension.
-
Specification