Visualization

Once the images to be processed are selected (see next section), Panel 2 provides the following features (from left to right):

• Changing the image representation mode: switching between displaying images in their original colors or binarized versions (see the Registration algorithm section for more details).

• Adjusting image resolution during display: ensuring faster rendering, especially for high-resolution images with several thousand pixels in each direction.

• Selecting the juxtaposition mode: choosing between horizontal or vertical alignment of the images.

• Displaying the Combined images considering the full frame or their overlapping regions only (enabling Apply Mask).

Panel 3 as ‘thumbnails’ allows users to select the type of image (Fixed image, Moving image, Juxtaposed images or Combined image) to view in within Panel 4.

Panel 4 consists of large image displaying, dotted with navigation toolbars capabilities (like Panning, Zooming, and Saving). This window enables:

• to crop images to regions of interest (ROI) related to the Fixed image or the Moving image, using the mouse (by left-clicking and dragging).

• to manually define matching points with the mouse in the Juxtaposed image mode in the frame of the User-Driven registration approach (see further).

(left) cropping and (right) user-driven matching point definition.