THREE-DIMENSIONAL SHAPE DATA PROCESSING APPARATUS AND THREE-DIMENSIONALSHAPE DATA PROCESSING METHOD

• US 20100166280A1
• Filed: 12/17/2009
• Published: 07/01/2010
• Est. Priority Date: 12/26/2008
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Uchiyama, Shinji, Endo, Takaaki
• Granted Patent: US 8,712,016 B2
• Time in Patent Office: Days
• US Class Current: 382/131
• CPC Class Codes: G06T 11/00 2D [Two Dimensional] image generation
• CPC Class Codes: G06T 2207/10072 Tomographic images
• CPC Class Codes: G06T 7/33 using feature-based methods

Abstract

A three-dimensional shape data processing apparatus includes a data input unit configured to input data of a first tomographic image group including a plurality of tomographic images and data of a second tomographic image group including a plurality of tomographic images, wherein at least a part of an image capturing area of the second tomographic image group is overlapped with at least a part of an image taking area of the first tomographic image groups, and a combination unit configured to combine first three-dimensional shape data and second three-dimensional shape data into one piece of three-dimensional shape data according to an estimated accuracy estimated values of the first and second three-dimensional shape data at a plurality of positions.

Claims

1. A three-dimensional shape data processing apparatus comprising:

a data input unit configured to input data of a first tomographic image group including a plurality of tomographic images and data of a second tomographic image group including a plurality of tomographic images, wherein at least a part of an image capturing area of the second tomographic image group is overlapped with at least a part of an image capturing area of the first tomographic image group;

a restoration unit configured to restore first three-dimensional shape data based on the first tomographic image group and second three-dimensional shape data based on the second tomographic image group;

an estimation unit configured to estimate an accuracy value of the first and second three-dimensional shape data at a plurality of positions; and

a combination unit configured to combine the first and second three-dimensional shape data into one piece of three-dimensional shape data based on the estimated accuracy values of the first and second three-dimensional shape data estimated by the estimation unit at the plurality of positions.

2. The three-dimensional shape data processing apparatus according to claim 1, wherein the first and second three-dimensional shape data is volume data.

3. The three-dimensional shape data processing apparatus according to claim 1, wherein the combination unit is configured to extract a characteristic point from the first three-dimensional shape data and the second three-dimensional shape data, and execute the combination processing according to association between the extracted characteristic points.

4. The three-dimensional shape data processing apparatus according to claim 1,

wherein the restoration unit is configured to restore first luminance value arrangement data as the first three-dimensional shape data and second luminance value arrangement data as the second three-dimensional shape data,

wherein the estimation unit is configured to estimate an accuracy value of the first and second luminance value arrangement data at a plurality of positions, and

wherein the combination unit is configured to generate data of a first surface shape model based on the first luminance value arrangement data, generate data of a second surface shape model based on the second luminance value arrangement data, and combine the data of the first and second surface shape models based on the estimated accuracy values of the first and second luminance value arrangement data to generate one piece of surface shape model data corresponding to the one piece of three-dimensional shape data.

5. The three-dimensional shape data processing apparatus according to claim 4, wherein the combination unit is configured, in combining the data of the first and second surface shape models, to deform the piece of surface shape model data so that a shape of a surface of the first and second surface shape model data becomes substantially the same as each other based on the estimated accuracy value, and combine the deformed surface shape model data into one piece of surface shape model data.

6. The three-dimensional shape data processing apparatus according to claim 1, wherein the estimation unit is configured to estimate the accuracy value based on image capturing data, time difference between adjacent pixels of each of the plurality of tomographic images, and a probabilty of error that occurs in measuring a position and an attitude of each of the tomographic images.

7. The three-dimensional shape data processing apparatus according to claim 1, wherein the data of the first and second tomographic image groups is acquired by an optical coherence tomography.

8. The three-dimensional shape data processing apparatus according to claim 1, wherein the data of the first and second tomographic image groups are acquired by an ultrasonic image diagnostic apparatus.

9. The three-dimensional shape data processing apparatus according to claim 1, wherein a direction of a normal line to the data of at least apart of the first tomographic image group is different from a direction of a normal line to the data of at least apart of the second tomographic image group by an angle of at least 90 degrees.

10. A three-dimensional shape data processing method comprising:

inputting data of a first tomographic image group including a plurality of tomographic images and data of a second tomographic image group including a plurality of tomographic images, wherein at least a part of an image capturing area of the second tomographic image group is overlapped with at least apart of an image capturing area of the first tomographic image group;

restoring first three-dimensional shape data from the first tomographic image group and second three-dimensional shape data from the second tomographic image group;

estimating an accuracy value of the first and second three-dimensional shape data at a plurality of positions; and

combining the first and second three-dimensional shape data into one piece of three-dimensional shape data based on the estimated accuracy values of the first and second three-dimensional shape data at a plurality of positions.

11. A computer-readable storage medium storing computer-executable instructions which, when executed by a computer, cause the computer to perform three-dimensional shape data processing operations comprising:

inputting data of a first tomographic image group including a plurality of tomographic images and data of a second tomographic image group including a plurality of tomographic images, wherein at least a part of an image taking area of the second tomographic image group is overlapped with at least a part of an image taking area of the first tomographic image groups;

restoring first three-dimensional shape data from the first tomographic image group and second three-dimensional shape data from the second tomographic image group;

estimating an accuracy value of the first and second three-dimensional shape data at a plurality of positions; and

combining the first and second three-dimensional shape data into one piece of three-dimensional shape data based on the estimated accuracy values of the first and second three-dimensional shape data at a plurality of positions.