Resources Contact Us Home
Method and system for measuring the relief of an object

Image Number 4 for United States Patent #RE42899.

A method and a system for measuring the relief of an object are described herein. The system includes a grid projecting for projecting a grid, an image acquisition apparatus that includes a camera, and a computer. Providing a reference object having common elements with the object to measure, the method includes the steps of a) positioning the grid at three different known positions relative to the camera and the common elements; b) for each position of the grid, projecting the grid unto the reference object and, with the camera, taking an image of the reference object to yield three images having values for each pixel of the camera and c) computing the reference object phase for each pixel using the three reference object intensity values for the corresponding pixel. Steps a), b) and c) are repeated by replacing the reference object by the object to be measured. The difference of height between the object to be measured and the reference object for each pixel are then computed by subtracting the reference object phase and the object phase for the corresponding pixel.

  Recently Added Patents
High safety vehicular transportation system and operational method thereof
Systems and methods for computer-aided fold detection
PMI feedback with codebook interpolation
Method and apparatus for controlling peak amplifier and doherty power amplifier
Signal transfer apparatus
Grip for a racket
Systems and methods for image stream processing
  Randomly Featured Patents
Shock start for memory disk motor drives
Electric double layer capacitor including current collector having a plurality of apertures therein
Calibrated catalyst carrier body with corrugated casing
Armature/projectile for a single or multi-turn rail gun
Semiconductor device and manufacturing method thereof
Data output apparatus that locks and unlocks data format
Synthetic DNA sequences having enhanced expression in monocotyledonous plants and method for preparation thereof
Finger merge protection for rake receivers
Site drainer
Yarn piecing arrangement for an open-end friction spinning machine