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Step B -- Stitch the remaining rows

In this step, you stitch the remaining rows of images into horizontal panoramas that are parallel to the first row.  If all goes well, these rows will match the spherical coordinate system of the first row.  Repeat these steps for all of the rows.

  1. Choose the Show imported images command (View menu) to display the imported thumbnails in the lower pane.

  2. Select the thumbnails for the row and choose the Stitch with the Wizard command (New image menu).

  3. This time, remove the checkmark from Automatically detect focal length and then choose I am certain of the focal length on Wizard 3/9. This guarantees all rows are stitched with the same focal length setting (the first stitch sets the Wizard value to the detected focal length).

  4. Advance to Wizard 6/9 and place stitching points on one image pair as you did for the first row.  As before, I recommend this procedure for placing stitching points:

    • Place stitching points on one image pair. I recommend using distant points and/or points all in the same plane.

    • After placing 5 points, you should get a dot in the Images list.

    • Once you have the image dot, go back to each stitching point in turn and examine them at large zoom scale (400% or 500%).  Adjust the stitching points so that they match well on the two images.

    • It is probably sufficient to place stitching points on just one image pair because you are using Semi-automatic photo stitching.

    The warped images will be wider on the top or the bottom, depending upon whether the row is above or below the center, making a keystone shape for smaller tilt angles or a mushroom shape for larger tilt angles.  This is normal.  The degree of keystoning or mushrooming will depend upon the tilt angle you used for the upper row.

  5. Advance to Wizard 7/9.

    Examine the preview image to be sure the stitch is accurate.  If it is not accurate, return to Wizard 6/9 to adjust stitching points or add new stitching points to other image pairs.

  6. Advance to Wizard 7/9.  Examine the preview image to be sure the stitch is accurate.

  7. Advance to Wizard 9/9 to complete the stitch and click Done to exit the Wizard.  At this point, you should have a stitched thumbnail and a cropped thumbnail for each row in the upper pane.  The most recent cropped image should appear in the lower pane.

  8. FOR THE BOTTOM ROW ONLY:  When you stitch the bottom row (if it was not the first row you stitched), choose the Panoramic properties command (Image menu).  Write down the Below value from Vertical field of view (degrees) in the Panoramic image properties dialog box.  We'll need this value in a later step.  We'll refer to it as StepAB_Below.

  9. Click Cancel to close the Panoramic image properties dialog box.

Advance to Step C -- Rotate the three cropped images 90 degrees clockwise

Back to Step A -- Stitch the first row

Up to The list of the major steps


Revised: January 31, 2006

 1999-2006 Smoky City Design, LLC and John Strait