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Some experiments in compressing angiocardiographic images according to the Peano-Hilbert scan path

Pinciroli, F ; Combi, C ; Pozzi, G ; Portoni, L ; Negretto, M ; Invernizzi, G

Computer Methods and Programs in Biomedicine, 1994, Vol.43(3), pp.247-253 [Periódico revisado por pares]

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  • Título:
    Some experiments in compressing angiocardiographic images according to the Peano-Hilbert scan path
  • Autor: Pinciroli, F ; Combi, C ; Pozzi, G ; Portoni, L ; Negretto, M ; Invernizzi, G
  • Assuntos: Image Compression ; Angiocardiography ; Peano-Hilbert Scan Path ; Lzw Coding ; Medicine
  • É parte de: Computer Methods and Programs in Biomedicine, 1994, Vol.43(3), pp.247-253
  • Descrição: 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.
  • Idioma: Inglês

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