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
Visual indicator of online backup
Gas flow indicator
Method of making a CIG target by spray forming
Satellite mounting pole
Buck converter having reduced ripple under a light load
Pull through coronary sinus pacing lead
Plants and seeds of hybrid corn variety CH367819
  Randomly Featured Patents
Process for the gasification of coal in situ
Security system and method of in-flight entertainment device rentals having self-contained audiovisual presentations
Communication method and system using two or more coding schemes
Fish scaler
Electric cooker
Photochromic tanning and sunscreen lotion
Interactive apparatus with recording and playback capability usable with encoded writing medium
Silver halide color photographic material
Pallet truck forklift having an enclosed cab
Method of disposal of organic chlorine compounds by combustion