Some experiments in compressing angiocardiographic images according to the Peano-Hilbert scan path
| Autor: | Carlo Combi, Giuseppe Pozzi, G. Invernizzi, Francesco Pinciroli, M. Negretto, L. Portoni |
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| Rok vydání: | 1994 |
| Předmět: |
peano-hilbert path
Brightness media_common.quotation_subject Health Informatics Digital image Compression (functional analysis) Image Processing Computer-Assisted Photography Humans Contrast (vision) Computer vision Angioplasty Balloon Coronary data compression Mathematics media_common angiocardiographic images business.industry Angiocardiography Videotape Recording Computer Science Applications Radiographic Image Enhancement Compression ratio Artificial intelligence business Algorithms Software Image compression Data compression |
| Zdroj: | Computer Methods and Programs in Biomedicine. 43:247-253 |
| ISSN: | 0169-2607 |
| DOI: | 10.1016/0169-2607(94)90076-0 |
| Popis: | We defined and implemented three new irreversible compression techniques for digital angiocardiographic static images: brightness error limitation (BEL), pseudo-gradient adaptive brightness error limitation (PABEL), pseudo-gradient adaptive brightness and contrast error limitation (PABCEL). To scan digital images we implemented an algorithm based on the Peano-Hilbert plane filling curve. We applied our compression techniques to 168 static images selected from angiocardiographic 35-mm films. We achieved best compression results applying the PABCEL method, obtaining a mean compression ratio of about 8:1. Consulted cardiologists did not find significant diagnostic differences between original images and reconstructed ones. |
| Databáze: | OpenAIRE |
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