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Number recognition device, and recognition method therefor

  • US 20100289897A1
  • Filed: 04/20/2006
  • Published: 11/18/2010
  • Est. Priority Date: 05/02/2005
  • Status: Abandoned Application
First Claim
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1. A number recognition device comprising:

  • a imaging means for taking an image containing a number plate of a motor vehicle;

    an image processing means for ternarizing the taken image by a comparison using threshold values and circumjacent image elements in the image; and

    a threshold value predicting means for computing optimum predicted values of the threshold values based on a brightness average and a brightness variance of the taken image, whereinthe image processing means executes a ternarization process by using the predicted values of the threshold values.

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