Spatial Frequency Spectra of Radiographic Images
| Autor: | Harold L. Kundel, Francis J. Shea, George Revesz, Marvin C. Ziskin |
|---|---|
| Rok vydání: | 1971 |
| Předmět: |
Mathematical model
business.industry Matched filter Radiography Angiography ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Solitary Pulmonary Nodule Image processing Pattern recognition Spectral line Optics Optical transfer function Medicine Radiology Nuclear Medicine and imaging Artificial intelligence Spatial frequency business |
| Zdroj: | Radiology. 98:507-517 |
| ISSN: | 1527-1315 0033-8419 |
| DOI: | 10.1148/98.3.507 |
| Popis: | An analysis of the input to image processing systems is presented for input images recorded on radiographic film. The effects of combining simple structural elements to produce complex images are discussed. Mathematical models for idealized radiographic images of ribs, pulmonary nodules, and blood vessels are formulated and the effect of various combinations of these models on the frequency spectra of the complex image is examined in detail. The validity of these theoretical predictions is demonstrated by using a radiograph of real structures. The implication of these results for image processing by matched filters is discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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