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
Patient interface
Communication system with signal processing mechanism and method of operation thereof
Image compression device, image expansion device, and image processing apparatus
Channel estimation for a control channel in an OFDM system
Channel-assignment for a multi-channel dual-radio mesh backhaul
Systems and methods for determining a file set
Writing instrument
  Randomly Featured Patents
Reconfigurable logic block
Process and apparatus for the deposition of thin electrochromic layers formed of materials with a stoichiometric composition
Caching based on spatial distribution of accesses to data storage devices
Electrical connectors
Electrical signal jitter and wander measurement system and method
Methods and apparatus for network communication via barrage relay onto an independent medium allocation
System and method for providing closed loop infusion formulation delivery
Starting method for induction motors
Continuous, baseboard style electrical connector
Defoamer formulations