A Histogram Smoothing Method for Digital Subtraction Radiography
Digital subtraction radiography is a powerful technique for the detection of changes in serial radiographs. Among the others, contrast correction is a basic step for comparing the radiographs. Ruttimann’s algorithm is widely used for contrast correction. In this study we propose a technique which is...
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| Veröffentlicht in: | Advances in Information Systems 2004-01, p.392-399 |
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| creator | Ozturk, Aydin Gungor, Cengiz Güneri, Pelin Tuğsel, Zuhal Göğüş, Selin |
| description | Digital subtraction radiography is a powerful technique for the detection of changes in serial radiographs. Among the others, contrast correction is a basic step for comparing the radiographs. Ruttimann’s algorithm is widely used for contrast correction. In this study we propose a technique which is based on smoothing the empirical distribution of the reference image to improve Ruttimann’s algorithm. Cardinal splines were used for smoothing the empirical distribution. Results based on clinical and simulated data showed that the proposed technique has outperformed the Ruttimann’s algorithm. Relationship between the color depth and contrast differences was also investigated in terms of peak to signal ratio metric. |
| doi_str_mv | 10.1007/978-3-540-30198-1_40 |
| format | Article |
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| subjects | Applied sciences Color Depth Computer science control theory systems Cumulative Frequency Exact sciences and technology Gray Level Information systems. Data bases Memory organisation. Data processing Reference Image Simulated Image Software |
| title | A Histogram Smoothing Method for Digital Subtraction Radiography |
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