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
Integrating multimedia capabilities with circuit-switched calls
Flat panel display device and method of fabricating the same
Profile and template based dynamic portable user workflow
Pixel structure of a solid-state image sensor employing a charge sorting method
Apparatus and method for information processing, program, and recording medium
Biometric data display system and method
  Randomly Featured Patents
High density fiber optic cable packaging
Transmission having a post clutch actuator relief valve
Apparatus and method for multi-entity, mixed document environment document identification and processing
Portable telephone with a battery alarm function indicating lowest level for communication
Silver halide photographic material and process for the formation of image using same
Advertising sign system
Process and apparatus for automated manufacture of link sausages having casings formed of synthetic tubular material
Wind turbine blades with twisted and tapered tips
Rack housing for accommodating a plurality of fanless, plug-in components
Tissue container