SPECIFIC REQUIREMENTS TELEPATHOLOGY

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SPECIFIC REQUIREMENTS TELEPATHOLOGY

• Multimedia Dbase
• Color images sufficient resolution
• Interactive control and knowledge
• Color response expectrum camara
• Display response
• Controled sample
• Security and confidentiality tools

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COLOR IMAGES Sufficient resolution

• DINAMIC RANGE ( 8 bits RGB )
• SPATIAL RESOLUTION visual percept
• Depends on the microscopic power
• Directly link to capability to support lossy
  compression

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SAMPLING THEORY

• Spacial frecuency
• Amount of information in a spacial one dimention
  unit
• Spacial resolution
• Maximum spacial frecuency ( Fmax) able to detect
  or to transmit . 2 dimension matrix of the
  adquisition device

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SAMPLING THEORY-II

• SAMPLING THEORY SHANON
• Determine the sampling frequency ( distance ) to
  assure
• Discrete sample ( DIGITAL ) will iniquivocally
  produce a
• Continuous ( ANALOG ) images
• Samples should be taken at 2Fmax spacial
  frecuency this differ according the
  microscopic power objective.

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SAMPLING THEORY- III

• Influence microscopic power
• 512x512 sampling frecuency
• Insufficient in a lower power ( because Fmax is
  high )
• Sufficient at higher power ( because Fmax is
  lower )
• Influence of the camara sampling frecuency
• 1024x1024 sampling in high resolution camaras
  with an adquisition at lower power allow DIGITAL
  ZOOMING

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SAMPLING THEORY-IVCompression

• REDUCE AMOUNT OF DATA WITHOUT SENSIBLE LOSS of
  IMPORTANT information
• Sampling theory
• Compression
• IMPORTANT Visual inspection Image analysis
  Image quantitation.

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CONTROLED SAMPLING

• IMPORTANT Diagnosis is made on sampling done
  . Liability aspects
• a) Sampling done by another person
• b) Sampling selftaken robotized microscope
• assure control of studied area
• c) Virtual slide ( complete digitization )
• take all fields at high power
• Low power capture with high resultion camaras ..
  Digital zooming
• Use liability formulas

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CAMARA SPECTRAL RESPONS
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DISPLAY DEVICE EFFECT

• AutoGAIN control
• Automatic COLOR correction

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SECURITY CONFIDENTIAL

• MANDATORY
• Digital signature, authentication of data and
  control and register of any modification
• ORGANIZATIONAL REQUIREMENTS
• Staff aware and training of the protection
  techniques and requirements to manipulate
  personel sensible data

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Others

• APPOINTMENT MANAGEMENT SYST
• ( on line supervision diagnosis )
• a) STUDIO organization
• b) Personal computer based system e-mail
• c) CSCW