Similar image retrieval device, method of operating similar image retrieval device, and similar image retrieval program
First Claim
1. A similar image retrieval device that retrieves a similar image which is similar to a retrieved image from a plurality of instance images, comprising:
- a processor configured to,calculate a feature amount corresponding to a pattern, registered in advance, by analyzing the retrieved image,calculate a first existence probability of the pattern existing within the retrieved image as an absolute value between 0 to 1, through a statistical method, on the basis of the feature amount, andcalculate a similarity between the retrieved image and each of the plurality of instance images, on the basis of the first existence probability and a second existence probability of the pattern existing within the instance images which is calculated with respect to the plurality of instance images,wherein the processor calculates at least one of a coexistence probability of the pattern existing in both the instance image and the retrieved image, and a non-coexistence probability of the pattern independently existing in only one of the instance image and the retrieved image, on the basis of the first existence probability and the second existence probability.
1 Assignment
0 Petitions
Accused Products
Abstract
A feature amount calculation unit 61 calculates a feature amount corresponding to a pattern of a lesion by analyzing an inspection image. A probability calculation unit calculates a first existence probability which is a probability of the pattern of a lesion existing within the inspection image, using a calculation expression. The calculation expression is created in advance by a statistical method on the basis of a relationship between the feature amount and the presence or absence of the pattern of a lesion within an image for learning which is visually determined by a person. A similarity calculation unit calculates a similarity between the inspection image and a case image on the basis of the first existence probability and a second existence probability which is a probability of the pattern of a lesion existing within the case image which is calculated by the statistical method similarly to the first existence probability.
4 Citations
20 Claims
-
1. A similar image retrieval device that retrieves a similar image which is similar to a retrieved image from a plurality of instance images, comprising:
-
a processor configured to, calculate a feature amount corresponding to a pattern, registered in advance, by analyzing the retrieved image, calculate a first existence probability of the pattern existing within the retrieved image as an absolute value between 0 to 1, through a statistical method, on the basis of the feature amount, and calculate a similarity between the retrieved image and each of the plurality of instance images, on the basis of the first existence probability and a second existence probability of the pattern existing within the instance images which is calculated with respect to the plurality of instance images, wherein the processor calculates at least one of a coexistence probability of the pattern existing in both the instance image and the retrieved image, and a non-coexistence probability of the pattern independently existing in only one of the instance image and the retrieved image, on the basis of the first existence probability and the second existence probability. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A method of operating a similar image retrieval device, using a computer, which retrieves a similar image which is similar to a retrieved image from a plurality of instance images, comprising:
-
a feature amount calculation step of causing a processor to calculate a feature amount corresponding to a pattern, registered in advance, by analyzing the retrieved image; a probability calculation step of causing the processor to calculate a first existence probability of the pattern existing within the retrieved image as an absolute value between 0 to 1, through a statistical method, on the basis of the feature amount calculated in the feature amount calculation step; and a similarity calculation step of causing the processor to calculate a similarity between the retrieved image and each of the plurality of instance images, on the basis of the first existence probability calculate in the probability calculation step and a second existence probability of the pattern existing in the instance image which is calculated with respect to the plurality of instance images, wherein the processor calculates at least one of a coexistence probability of the pattern existing in both the instance image and the retrieved image, and a non-coexistence probability of the pattern independently existing in only one of the instance image and the retrieved image, on the basis of the first existence probability and the second existence probability.
-
-
20. A non-transitory computer readable recording medium having a similar image retrieval program recorded thereon, the program for retrieving a similar image which is similar to a retrieved image from a plurality of instance images, the medium causing a computer to execute:
-
a feature amount calculation function of calculating a feature amount corresponding to a pattern, registered in advance, by analyzing the retrieved image; a probability calculation function of calculating a first existence probability of the pattern existing within the retrieved image as an absolute value between 0 to 1, through a statistical method, on the basis of the feature amount calculated in the feature amount calculation function; and a similarity calculation function of calculating a similarity between the retrieved image and each of the plurality of instance images, on the basis of the first existence probability calculated in the probability calculation function and a second existence probability of the pattern existing within the instance image which is calculated with respect to the plurality of instance images, wherein calculating at least one of a coexistence probability of the pattern existing in both the instance image and the retrieved image, and a non-coexistence probability of the pattern independently existing in only one of the instance image and the retrieved image, on the basis of the first existence probability and the second existence probability.
-
Specification