System and method for capturing print information using a coordinate conversion method
First Claim
1. A system for processing image data representing biometric data, comprising:
- a receiving module for receiving image data captured in a first coordinate system; and
a coordinate conversion module coupled to the receiving module for converting the image data captured in the first coordinate system to converted image data in a second coordinate system.
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Abstract
A system and method is provided for converting biometric image data captured in a first coordinate system into biometric image data in a second coordinate system (e.g., from polar to rectangular). The system includes a receiving module for receiving raw image data captured in a first coordinate system, a coordinate conversion module, and a memory. The conversion system can be implemented in a biometric imaging system or in a system external to a biometric imaging system. After raw image data captured in a first coordinate system has been received, for each pixel in a defined output area, the coordinate conversion module retrieves an entry in a conversion data array and one or more samples from the captured raw image data. The coordinate conversion module then interpolates the retrieved samples using weighting based on the conversion data array entry to obtain the respective pixel value in the second coordinate system.
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Citations
42 Claims
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1. A system for processing image data representing biometric data, comprising:
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a receiving module for receiving image data captured in a first coordinate system; and
a coordinate conversion module coupled to the receiving module for converting the image data captured in the first coordinate system to converted image data in a second coordinate system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for processing image data representing biometric data, comprising:
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a non-planar prism;
a scanning imaging system optically coupled to the non-planar prism for capturing the image data in a first coordinate system; and
an image conversion system coupled to the scanning imaging system for converting the image data captured in the first coordinate system to converted image data in a second coordinate system. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A system for processing image data representing biometric data, comprising:
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a biometric imaging system comprising;
a non-planar prism, an scanning imaging system optically coupled to the non-planar prism for capturing the image data in a first coordinate system, and a first image conversion system coupled to the scanning imaging system for generating and storing conversion data; and
a second image conversion system coupled to the biometric imaging system for converting the image data captured in the first coordinate system to converted image data in a second coordinate system. - View Dependent Claims (16, 17, 18, 19)
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20. A system for processing image data representing biometric data, comprising:
means for converting image data captured in a first coordinate system to converted image data in a second coordinate system. - View Dependent Claims (21, 22)
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23. A method for processing image data representing biometric data comprising:
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receiving the image data captured in a first coordinate system and storing the captured image data; and
converting the captured image data in the first coordinate system to converted image data in a second coordinate system. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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32. A method for processing image data representing biometric data in a system having a scanning and capturing system and an image conversion system, comprising:
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generating and storing conversion data in the image conversion system;
capturing in the scanning and capturing system the image data in a first coordinate system;
communicating the captured first coordinate system image data to the image conversion system; and
converting the captured first coordinate system image data to converted image data in a second coordinate system. - View Dependent Claims (33, 34, 35, 36, 37)
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38. A method for processing image data representing biometric data comprising:
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capturing the image data in a first coordinate system; and
converting the captured image data in the first coordinate system to converted image data in a second coordinate system. - View Dependent Claims (39, 40, 41, 42)
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Specification