Working with a Picture

Using the Picture toolbar

Once a picture is displayed in the picture operator, you can modify the orientation, brightness, contrast, magnification, and grayscale/color mapping using the Picture toolbar.

1. Click on the picture so you see hash marks around the picture's border, as shown.

   

2. The Picture toolbar pops up. To find out what operation each tool performs, hover over it briefly to see its tooltip.

The tools available on the Picture toolbar can also be accessed by right-clicking on the image.

Using the Properties dialog box

You can change your color model or output selected portions of the displayed matrix by making appropriate choices from the Picture Properties dialog box.

To open the dialog, right-click on the picture and select Properties from the menu. The following options are available:

• Input Format:

  Grayscale
  RGB Color
  HSV Color
  HLS Color

• Import from Clipboard

• Output Format:

  Grayscale
  RGB Color
  HSV Color
  HLS Color

  This option is available only if you check "Output Selected Matrix."

• Output Selected Coordinates/Output Selected Matrix

  Outputs the coordinates or matrix selected using the toolbar tools. After checking this option, a placeholder appears to the left of the image. Fill in the placeholder with a variable name for the coordinates. For example, you can send the intensities for a selected subset of the picture to a variable in your worksheet, and then use that variable like any other Mathcad matrix.

Notes:

• There are two Properties dialog boxes for the Picture region. One controls the properties of the region including showing a border, highlighting the region, and disabling calculation of the region. The other controls the properties of the image displayed in the region, as discussed above.
• Many of the toolbar functions are also available as choices on the right-click menu used to access picture properties. In addition, this menu includes the Hide Arguments option, which hides the matrix name or expression that defines the picture, so it appears as an image only.

QuickSheet