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Vehicle interior classification system and method

  • US 8,581,983 B2
  • Filed: 03/07/2008
  • Issued: 11/12/2013
  • Est. Priority Date: 03/07/2007
  • Status: Active Grant
First Claim
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1. A method for determining a classification of an object of interest relating to a vehicle, comprising the steps of:

  • (i) with an image capture device disposed at the vehicle and having a field of view, acquiring an image;

    (ii) limiting the dynamic range of the acquired image to obtain a resultant image that comprises at least one region of interest, which encompasses a region of the field of view that is less than the field of view of the image capture device;

    (iii) processing image data representative of said at least one region of interest to extract information relating to a set of image features from the acquired resultant image while not processing image data outside of said at least one region of interest;

    (iv) statistically processing the extracted information with a previously determined set of image feature information values, each member of the set of image feature information values corresponding to a respective one of a set of predefined classifications of an object of interest relating to the vehicle, to determine the most probable classification;

    (v) outputting the determined most probable classification of an object of interest related to the vehicle; and

    wherein step (iii) comprises processing image data of the resultant image with a two dimensional complex discrete wavelet transform to produce a selected set of coefficients related to features in the acquired resultant image and, in step (iv), the previously determined set of image feature values comprises a set of weights for each defined classification, the weights being multiplied with the set of coefficients to produce a score for each defined classification, the defined classification with the highest produced score being the classification output in step (v).

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