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Standard Usage

The standard sequence of button presses for stereo processing and the recovery of 2D geometry prior to calculation of 3D measurements (using either the PMF Stereo Tool or the Correlation Stereo Tool ) is given below. It is assumed that the images and camera calibration data have already been input using the stereo management tool. Tv display is optional (the edge tool can be run without it) and is again the responsibility of the stereo management tool. If the Tv's associated with left and/or right images exist (are currently installed on the Tv tools) their regions(s) of interest will be used by the canny edge detector.

For edge based stereo based upon the PMF algorithm, first make sure the Image Selection is set to stereo images. The processing order is then

     canny         (edge detection and display)
     edge rectify  (transform the edges to parallel camera coordinates)
     geom2         (recover 2D geometry from left and right edges and display)
The resulting 3D geomery can be displayed and manipulated using the threed Tv found on the stereo management tool.

The aread based stereo algorithm was developed after PMF in orer to incorporate temporal constraints into the matching process and to make the algorithm suitable for hardware implementation. For area based stereo based upon the multi-scale temporal stretch correlation algorithm, first make sure the Image Selection is set to stereo images. The processing order is then

     im_rectify    (transform the image to parallel camera coordinates)
                   manually select rectangular regions of the two images for processing
                   using the  {\it left} and {\it right} {\it Tv} ROI facility.
     canny         (edge detection and display)
     geom2         (recover 2D geometry from left and right edges and display)
The resulting 3D geomery can once again displayed and manipulated using the threed Tv found on the stereo management tool.


next up previous contents
Next: Edge Geom Tool Buttons Up: Edge Geom Tool Previous: Introduction   Contents
root 2017-09-26