Method for compensating digital image data

Method for compensating digital image data

  • CN 1,797,423 A
  • Filed: 12/27/2004
  • Published: 07/05/2006
  • Est. Priority Date: 12/27/2004
  • Status: Active Application
First Claim
Patent Images

1. the compensation method of a digital image data, comprising in the digital image data that a fluorescent tube is produced during in brightness irregularities in order to the one scan assembly of compensation one scan device:

  • One target brightness value T is provided;

    One first reference brightness value W1 is provided, and this first reference brightness value W1 is by scanning a Standard Colors and obtain in one first scanning position with this scan components;

    Use this target brightness value T and this first reference brightness value W1 and calculate one first compensating gain value G1, wherein G1=T/W1;

    One second reference brightness value W2 is provided, and this second reference brightness value W2 is by scanning this Standard Colors and obtain in one second scanning position with this scan components;

    According to this first reference brightness value W1, this first compensating gain value G1 and the second reference brightness value W2 and obtain one second compensating gain value G2;

    As this first compensating gain value G1 during greater than this second compensating gain value G2 one preset difference value, G2 compensates and calculates one the 3rd compensating gain value G3 to a digital image data to be compensated with this second compensating gain value;

    And when this second compensating gain value G2 less than the difference of this first compensating gain value G1 and the two or two compensating gain value G2 and this first compensating gain value G1 during less than this preset difference value, G2 compensates and does not carry out the calculating of the 3rd compensating gain value G3 to this digital image data to be compensated with this second compensating gain value.

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