Contours

In the image editing window, once the Add contour option is selected, the arrangement of toolbar on the left side will be changed:

• Save contour (on a white background) – saves the contour alone, turning the X-ray into a white background
• Save contour (on a white background) and picture – saves two pictures in the gallery: X-ray with contour marked or the contour alone on a white background
• Undo – erases the last point entered
• Change the colour – change the contour colour
• Smooth the curve – smooths the contour line
• End drawing – ends forming the contour line

To start drawing, click subsequent points to show how the curve is going to run.

In addition, the colour of the curve can be changed (to distinguish several contours in one picture) and smoothed (for appropriate buttons, see the panel on the left). A model smoothing effect of the above curve looks as follows:

By pressing the End drawing button forming the curve is ended.

Picture/image with marked shapes can also be saved (preferably as a separate image/picture in order not to lose the original).