Panorama Window

This window enables the construction of composite images from a number of B-scans, taken in the same plane. If the probe is moved sideways across a wide structure, a panorama can be built up of the complete structure.

To work, this window requires position information to be available as it uses the relative position of each of the slices to put them in the correct place in the composite picture. You start the process by clicking in the window with the left mouse button to indicate the starting point from which the panorama will be built up.

When scanning panoramas, try to keep an even pressure with the probe so as to avoid moving the internal structures during the scan. Alternatively, record the panoramic data set in the usual way and then use the `Repanorama' window to reconstruct the panorama: this way, you can use Stradx's image registration facilities to remove any probe pressure artefacts.

The `Panorama' window has a slider to permit control of the distance over which gaps will be filled between the segments taken from each of the images. This can be set to zero, in which case the distance will be determined automatically as a function of the movement of the probe between each pair of slices.

There is a `Pause' toggle button which will stop the contents of the window being updated by the live video stream. Note that clicking in the window with the left mouse button (to indicate the panorama's starting point) automatically releases the `Pause' button.

There is also a `Save' to enable image ppm files to be saved. Here is an example of a ppm file saved in this way. It shows a slice across the neck from the front, including both lobes of the thyroid.

Panorama of thyroid

Here is another example, showing this time a panorama of the liver and right kidney.

Panorama of liver

View a movie of a real-time panorama (990 Kbytes).