# US 2014/0153799 A1 · Method and apparatus for obtaining panoramic image

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0153799 A1
- Document ID: US20140153799A1
- Status: Published application
- Kind: A1
- Application number: 14/159,201
- Filed: 2014-01-20
- Published: 2014-06-05
- Earliest claimed: 2011-04-25
- Assignees: VATECH Co., Ltd.
- Applicants: Vatech Co., Ltd.
- Inventors: Hyosung Cho; Sungil Choi; Yangseo Koo
- Web page: https://patentgrep.com/patent/US20140153799A1

## CPC

- G06T 12/00: Tomographic reconstruction from projections
- A61B 6/469: {for selecting a region of interest [ROI]}
- A61B 6/51: for dentistry
- A61B 6/5205: {involving processing of raw data to produce diagnostic data}
- A61B 6/5223: {generating planar views from image data, e.g. extracting a coronal view from a 3D image}
- G06T 3/4038: Image mosaicing, e.g. composing plane images from plane sub-images
- A61B 6/025: {Tomosynthesis}
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A method of obtaining a panoramic image and an apparatus for the same are disclosed. In particular, a method of obtaining a panorama image and an apparatus for the same capable of obtaining a more clear panoramic image with reproducibility by extracting best-focused-images in case of forming images of multiple image-layer-trace images are disclosed. In accordance with the method and the device of this invention for obtaining the panoramic image, it is possible to complete the optimal image-layer-trace to be reconstructed and to obtain a clear panoramic image which vividly shows an arch of a patient by reconstructing a panoramic image for an optimal image-layer-trace most closely related to a focus-trace.

## Claims

### Claim 1

A method of obtaining a panoramic image, comprising steps of:
a) obtaining panoramic image frames of regions of interest to be taken in an object, wherein the panoramic image frames are correspond to multiple image-layer-traces;
b) dividing the multiple image-layer-traces into a plurality of regions respectively and determining at least two analysis regions among the plurality of regions;
c) selecting an optimal image-layer-trace most closely related to a focus-trace by analyzing the multiple image-layer-traces in the same analysis region;
d) extracting at least one connecting-trace linking the optimal image-layer-traces selected in the analysis regions;
e) completing a final-trace by connecting the optimal image-layer-trace selected in each analysis region and the connecting-trace all together; and
f) reconstructing a panoramic image corresponding to the final-trace.

### Claim 2 (depends on 1)

The method of claim 1, wherein the extracting the connecting-trace at the step d) includes finding a logarithmic function consistent with at least one trace linking the optimal image-layer-traces selected in the analysis regions.

### Claim 3 (depends on 1)

The method of claim 1, wherein the multiple image-layer-traces are divided into five (5) regions at the step b), and the analysis region is determined with a first region corresponding to left posterior teeth, a third region corresponding to anterior teeth and a fifth region corresponding to right posterior teeth.

### Claim 4 (depends on 1)

The method of claim 1, wherein, at the step c), the optimal image-layer-trace is selected in each analysis region by using a frequency analysis.

### Claim 5 (depends on 1)

The method of claim 1, wherein the region of interest is an arch of a patent.

### Claim at position 6

6-20. (canceled)

### Claim 21

An apparatus for obtaining a panoramic image, comprising an image processing device for obtaining a panoramic image from panoramic image frames of regions of interest to be taken in an object, wherein the panoramic image frames are correspond to multiple image-layer-traces.

### Claim 22 (depends on 21)

The apparatus of claim 21, wherein the image processing device includes:
a region determining unit for dividing the multiple image-layer-traces into at least three regions and determining at least two analysis regions among the three regions;
a trace selecting unit for analyzing the multiple image-layer-traces in the analysis regions to select an optimal image-layer-trace most closely related to a focus-trace in each analysis region;
a connecting-trace extracting unit for extracting at least one connecting-trace linking the optimal image-layer-traces selected in the analysis regions;
a final-trace completing unit for completing a final-trace by connecting the optimal image-layer-trace selected in each analysis region and the connecting-trace all together; and
an image reconstructing unit for reconstructing a panoramic image corresponding to the final-trace.

### Claim 23 (depends on 22)

The apparatus of claim 22, wherein the trace selecting unit selects the optimal image-layer-trace of each analysis region with a frequency analysis.

### Claim 24 (depends on 22)

The apparatus of claim 22, wherein the connecting-trace extracting unit extracts the connecting-trace by finding a logarithmic function consistent with at least one trace linking the optimal image-layer-traces selected in the regions.