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
Maize variety hybrid X8N355
Sensor device and method for manufacture
Image processing system, image processing server, image forming apparatus, image processing method, and recording medium
Fake exception handler detection
Active noise canceling system for mechanically cooled germanium radiation detectors
Determining a route advertisement in a reactive routing environment
Method and apparatus of controlling transmission power
  Randomly Featured Patents
Compressor having a pump with two adjacent rocking rotors
Delivery of streaming media
Photographic reversal process without second exposure
Capacitor power supply unit, heating device, image forming apparatus, and copying device
Pheromone active compounds
Fuel cell stack
Method for the compaction of soft magnetic powder
Adjustable measuring scoop
Needle head for biopsy cannula
Voltage pump with switch-on control