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Rigid Registration Process

Figure 5.3: This screen shot shows the two views in full screen mode where the zoom interaction has been used to isolate a specific area. A manual rigid registration is being performed (the ``Control Points'' button has been pressed). Yellow crosses are the 3D spatial points that have to correspond between images. Yellow circles define the directions (following the blue lines). Note that no matter the circle is far from the cross, only the direction is taken in account.
Image registrationtool4

This module provides easy-to-use manual rigid registration. The way to do so is simple : the user chooses a single 3D point and a direction for each image that should correspond one to the other. Then the RegistrationTool turns this information into a rigid matrix. The calculated rigid matrix is first applied to the moving image. Then the moving image is re-sampled to meet the fixed image size and spacing information.

Here is an easy to run process to perform rigid registration manually :


IMPORTANT : Once the moving image is registered, both images are automatically position-linked one to the other. To switch off this link mode, press the ``link/unlink'' button in the toolbar. Note that the moving image is also automatically re-sampled into the fixed image size and spacing information. The re-sampling process uses a linear interpolation (default) between pixel values. As you can see in the control panel (Fig. 5.4) you can choose another type of interpolation. Note that the B-spline and sinus cardinal interpolations takes longer to be done.


next up previous contents
Next: Affine Registration Process Up: Registration Tool Module Previous: Navigation   Contents
Nicolas Toussaint 2007-06-22