| Presentation | 2001/3/16 Internal Motion Analysis Using Ultrasonic Images and Spetio-Temporal Motion Model Kazushi OTA, Akihiro MINAGAWA, Norio TAGAWA, Tadashi MORIYA, Shinichi MINOHARA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The motion of internal organs has been strongly correlated with respiration as demonstrated by ultrasonography. By making use of this correlation, we have recently proposed an algorithm for estimating an instantaneous 2-D motion field called motion in the following. In this algorithm, the motion was modeled as a regression random variable with respect to the respiratory signal, which had the spatially independent unknown coefficients. However, the value of these coefficients should vary with a spatial smoothness, which enables a spatial constraint to be applied. Then, we propose an extended motion model, in which the regression coefficients are defined respectively as a random variable, i.e., Gaussian Markov random field (GMRF), which has an unknown scale factor called "hyper parameter", and construct a computationally stable estimation algorithm. Furthermore, we examine the tracking method in ROI using the results of motion fields. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | ultrasonic images / respiration / organ's movement / hierarchical model / EM algorithm / tracking |
| Paper # | PRMU2000-246 |
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| Conference Information | |
| Committee | PRMU |
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| Conference Date | 2001/3/16(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
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| Paper Information | |
| Registration To | Pattern Recognition and Media Understanding (PRMU) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Internal Motion Analysis Using Ultrasonic Images and Spetio-Temporal Motion Model |
| Sub Title (in English) | |
| Keyword(1) | ultrasonic images |
| Keyword(2) | respiration |
| Keyword(3) | organ's movement |
| Keyword(4) | hierarchical model |
| Keyword(5) | EM algorithm |
| Keyword(6) | tracking |
| 1st Author's Name | Kazushi OTA |
| 1st Author's Affiliation | Graduate School of Engineering, Tokyo Metropolitan University() |
| 2nd Author's Name | Akihiro MINAGAWA |
| 2nd Author's Affiliation | Graduate School of Engineering, Tokyo Metropolitan University |
| 3rd Author's Name | Norio TAGAWA |
| 3rd Author's Affiliation | Graduate School of Engineering, Tokyo Metropolitan University |
| 4th Author's Name | Tadashi MORIYA |
| 4th Author's Affiliation | Graduate School of Engineering, Tokyo Metropolitan University |
| 5th Author's Name | Shinichi MINOHARA |
| 5th Author's Affiliation | National Institute of Radiological Sciences |
| Date | 2001/3/16 |
| Paper # | PRMU2000-246 |
| Volume (vol) | vol.100 |
| Number (no) | 702 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |