The method and apparatus of absolute-coordinate three-dimensional surface imaging

The method and apparatus of absolute-coordinate three-dimensional surface imaging

  • CN 101,466,998 B
  • Filed: 11/09/2006
  • Issued: 09/16/2015
  • Est. Priority Date: 11/09/2005
  • Status: Active Grant
First Claim
Patent Images

1. determine a method for the absolute coordinates of the three-dimensional surface of object, described method comprises:

  • Project on the surface of described object respectively by uniform illumination figure and two illumination pattern through phase shift, each illumination patterns encodes one marks;

    Catch the reflected image from the illumination pattern on the surface of described object;

    The image that combination catches is to generate wrapped phase image;

    Relative unwrapped phase image is generated by carrying out solution parcel to described wrapped phase image;

    Multi-level quality guidance algorithm can be used for Phase-un-wrapping;

    The first, the Quality Map of wrapped phase image is calculated by the method for difference or gradient map;

    Quality Map is divided into multiple quality level;

    Then, Phase-un-wrapping from the level of the more data point of high-quality rank, the then more low-level data point of Disposal quality;

    In each aspect, the method for the Phase-un-wrapping of an application fast line;

    Absolute phase image is generated from described relative unwrapped phase image;

    AndThe absolute coordinates on the surface of described object is determined according to absolute phase image;

    Phase-un-wrapping comprises;

    Generate a quality analysis figure;

    Described quality analysis diagram root is become multiple quality scale;

    AndWith the order of decreasing quality, respectively to each quality scale application phase unwrapping algorithm;

    Wherein, the reflected image catching described illumination pattern comprises and catches described image with white-black pattern or color mode;

    By using the image from body surface reflection of uniform illumination figure, while determining the absolute coordinates of body surface, the black and white texture of body surface can be captured;

    Or, uniform illumination figure is coloud coding, when uniform illumination figure is projected, by using with the image from body surface reflection of the uniform illumination figure of color mode seizure, while determining the absolute coordinates of body surface, the color texture of body surface can be captured;

    The colour of seizure object or black and white texture comprise deletes encoded marker from the captured image of uniform illumination figure.

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