1. Model Based Radiographic Image Classification This method implements an object oriented knowledge representation to automatically determines the body part class of a radiographic image. The reasoning unit estimates the most probable body part class based on class knowledge model. The model includes both objects and their spatial relationships.

2. Object Oriented Knowledge Model

3. Pelvis Radiograph and Model

4. Key Components of Pelvis Model

5. Pelvis Class Model

6. Experimental Results for Pelvis Model Green Bones Best Match to Model

7. Experimental Results for Pelvis Model Green Bones Best Match to Model

8. Chest Radiograph and Typical Edge Map

9. Semantic Network and Chest Model

10. Diagram of All Model Objects

11. Results -Initial Model

12. Lung Location Refined

13. Spine Detection Based on Model

14. Body Part Classification Based on Knee Model Match: Red Bone models Reject Green model

15. Body Part Classification Based on Elbow Model Match: Red Bone models Reject Green model

16. Patents and Publications for Model Based Classification Gaborski, R., US 5,943,435: Body part recognition in radiographic images. Gaborski, R., US6,018,590: Technique for finding the histogram region of interest based on landmark detection for improved tonescale reproduction of digital radiographic images. Jang, B. and Gaborski, R., US 5,862,249: Automated method and system for determination of positional orientation of digital radiographic images. Gaborski, R., et al, US 5,696,805:Apparatus and method for identifying specific bone regions in digital X-ray images

17. Patents and Publications for Model Based Classification, continued Luo, H., Gaborski, R. and Acharya, R., "Knowledge Representation for Image Content Analysis in Medical Image Databases", SPIE International Symposium on Medical Imaging 2001. Luo,H., Gaborski,R. and Acharya, R., "Automatic Segmentation of Lung Regions in Chest Radiographs: A Model Guided Approach", IEEE International Conference on Image Processing (ICIP2000), Vancouver, Canada, 2000. Luo, H., Gaborski, R. and Acharya, R., "Robust Snake Model", Computer Vision and Pattern Recognition 2000, CVPR2000, Hilton Head Island, SC., 2000.

18. Patents and Publications for Model Based Classification, continued Sun, Y., Gaborski, R. and Acharya, R., "A Practical Approach for Locating Bone Structures in Radiographic Pelvis Images", 1999 Western New York Image Processing Conference Workshop, Rochester, New York, 1999. Luo, H., Acharya, R. and Gaborski,R., " Fully Automatic Detection of Spine in Chest Radiographs using Fuzzy Logic Approach, " Soft computing in Biomedicine, Rochester, New York, 1999. Luo, H., Acharya, R., Gaborski, R., " A New Fully Automatic Approach to Detect the Spine from X-ray Image", IEEE Western New York Image Processing Workshop, Rochester, New York, 1998. Luo, H., Acharya, R. and Gaborski,R., " A Knowledge-based Method for Automatic Segmentation of Lung Regions in Digital Chest Radiographs", 1999 Western New York Image Processing Conference Workshop, Rochester, New York, 1999.