SAMPLING POSITION-FIXING SYSTEM

• US 20110299786A1
• Filed: 06/02/2011
• Published: 12/08/2011
• Est. Priority Date: 06/04/2010
• Status: Active Grant

• Current Assignee: Hitachi Solutions Limited (Hitachi, Ltd.)
• Original Assignee: Hitachi Solutions Limited (Hitachi, Ltd.)
• Inventors: Tanizaki, Masaaki, KAZAMA, Yoriko, Nishiguchi, Osamu
• Granted Patent: US 9,098,745 B2
• Time in Patent Office: Days
• US Class Current: 382/225
• CPC Class Codes: G06V 10/56 relating to colour
• CPC Class Codes: G06V 20/13 Satellite images

Abstract

In the case of collecting samples, it is difficult to select a representative point of a target area. Thus, the samples are collected from certain positions, resulting in generation of variations of data. The target area is specified on an image to extract features from the target area. Further, clustering is performed for the features on a feature space to obtain representative features, and the obtained representative features are extracted as sampling points.

Claims

1. A sampling position-fixing system comprising:

an inputting unit that inputs image data as an analyzing target;

an image correlating unit that correlates the image data with map data;

a unit that extracts features of the image data correlated with the map data by the image correlating unit;

a unit that performs clustering for the extracted features on a feature space and spatially analyzes a clustering result;

a unit that extracts representative points from the spatially-analyzed image; and

an outputting unit that outputs the extracted representative points as sampling positions.

2. The sampling position-fixing system according to claim 1, wherein

the unit that extracts the representative points extracts the representative points from the vicinities of the centers of the clusters of the clustering result.

3. The sampling position-fixing system according to claim 2, wherein

the unit that extracts the features extracts the features in a plurality of areas, the clustering is performed for the plurality of areas, and the unit that extracts the representative points extracts a predetermined number of sampling points from the plurality of areas.

4. The sampling position-fixing system according to claim 2, further comprising a shortest route searching unit, wherein

the shortest route searching unit extracts the sampling position that can be accessed from a designated access point at the shortest distance.

5. The sampling position-fixing system according to claim 3, wherein

the plurality of areas are a plurality of polygon areas.

6. The sampling position-fixing system according to claim 1, wherein

the inputting unit accepts designation of a sampling number, and the outputting unit outputs the sampling positions corresponding to the input sampling number.

7. The sampling position-fixing system according to claim 1, wherein

the unit that extracts the features creates small areas in an area of the image data, and extracts a representative feature of the small areas.

8. The sampling position-fixing system according to claim 1, further comprising a mask processing unit that masks an area other than sampling point targets in advance.

9. The sampling position-fixing system according to claim 1, further comprising a transmission/reception unit that transmits and receives data to/from a mobile terminal, wherein

the transmission/reception unit transmits information of the sampling positions to the mobile terminal.

10. The sampling position-fixing system according to claim 1, further comprising a data accumulating unit, wherein

the data accumulating unit stores past sampling points, and the outputting unit also outputs the past sampling points.

11. The sampling position-fixing system according to claim 1, wherein

the outputting unit displays the extracted sampling points while the extracted sampling points are overlapped with the image data and the map data.

12. The sampling position-fixing system according to claim 1, wherein

the clustering is performed on the basis of the number of clusters set by the inputting unit.

13. The sampling position-fixing system according to claim 1, further comprising a unit that changes the setting of the clustering.

14. The sampling position-fixing system according to claim 1, wherein

the outputting unit outputs a sampling amount in order to mix samples to make one sample.

15. A sampling position-fixing system comprising:

an inputting unit that inputs image data as an analyzing target;

a unit that extracts features of the image data;

a unit that performs clustering for the extracted features on a feature space;

a unit that extracts representative points from a clustering result; and

an outputting unit that outputs the extracted representative points as sampling positions.