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
User interfaces for facilitating merging and splitting of communication sessions
Cupcake container
Electronic tablet device
Slow cooker
Barley with low levels of hordeins
Seismic isolation bearing
Flange for xerographic photoreceptor
  Randomly Featured Patents
Electrodes for ceramic oxide capacitors
Shift lever apparatus with range position indicator
Synergistic composition for endothelial cell growth
Article with lubricated surface and method
Ice water cooling system
Frequency attenuating filter apparatus and method for a data storage device
Modular leg type roller clutch with snap together assembly
Panel body using helical wire members
Electric motor having a circuit apparatus
Increasing accuracy of discrete curve transform estimates for curve matching in higher dimensions