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
System and method for redundant array copy removal in a pointer-free language
Pet fish burial pod
System and method for data reconfiguration in an optical communication network
Method of manufacturing semiconductor device
Cycloalkylamine substituted isoquinoline derivatives
Polymer-encapsulated colorant nanoparticles
Proximity-based mobile message delivery
  Randomly Featured Patents
Method for bleaching tripe using liquid bleaching agents
Method and apparatus for varying signals transmitted by a tag
Phosphonic acid derivatives as inhibitors of protein tyrosine phosphatase 1B (PTP-1B)
Synchronized clock signal regenerating circuit
Ionic liquid high temperature gas sensors
Method for soldering miniaturized components to a baseplate
Apparatus for contamination-free transfer of a series of liquid samples in precisely measured volume
Instrument for debriding tissue and applying therapeutic cells
Method and apparatus for providing for automatic gain control of incoming signals in a modem
Semiconducting device with stacked dice