It is used for visualization or for digitization of points.
| Visible | Select to display or not the background picture. |
| <Open> | Drag and Drop file (bmp, gif, jpg, wmf, emf) or click button. |
| <Paste> | An image stored on the Windows Clipboard as bitmap will be pasted into your outline. |
| <Save As> | Saves your background picture file to disk. All filters you selected will be applied. |
| <Copy> | The background picture will be placed on the Windows Clipboard as bitmap image, and may be pasted in elsewhere. |
| <Default> | Restores parameters (filters, placement) used by default. |
| Black and White | The image is converted to black and white. |
| Negative | The image is converted to a reversed color version of the original. |
| To Grayscale | The image is converted to grayscale. |
| Sharpen | Apply the sharpen filter. |
| Edge Detection | Finds the main lines in an image and replaces their color with the opposite color, at the same time most fill colors are darkened, making them like a background. |
| Median Filter | Causes a group of pixels to have the brightness of the average pixel in that group. |
| Threshold | Move the setting up, to exclude pixels with high brightness. |
| Neighbors | Move the setting up, to exclude single pixels. |
| Resize to plot | Select to resize or not the background picture on whole size of plot. |
| On page center | Select to draw the background picture on page center or on left upper corner. |
| Vertical Flip | The image will turn upside-down. |
| Horizontal Flip | The image will turn side-to-side, as in a mirror. |
| Rotate 90 | The image will turn 90 degrees. |
| Rotate | This allows you to enter an angle (in tenths of degrees, range: -900 - +900) for the image rotation, |
Trick: Use <Add Points from Screen><Capture Area> tool to get the background picture.
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