Eigentool Image Display
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Display Window

This window is used to display images, create and modify regions of interest, and display pixel information.  The Browser window is used to select images to be displayed in this window.

Note

Most of the settings for the Display Window can be set through a resource file that is loaded at the start of the program.

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Display Use

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On the Image

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Moving the mouse over the image will display the pixel coordinates and image pixel value in the footer of the display window.  If Spectroscopy processing is being done, the spectra coordinates and the image pixel value will be displayed in the footer of the display window.

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Use the left mouse button displays information about the pixel the cursor is over, in the footer.

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Use the middle mouse button will select a pixel for display in the Spectroscopy Histogram.

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Use the right mouse button to display information about the pixel the cursor is over, in the footer.  It also prints the information in a separate window.

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Use the 'f, Home, or up arrow keys  to display the first image.

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Use the 'l', End, or down arrow keys to display the last image.

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Use the 'n', > or right arrow keys to display the next image.  If pressed when the last image is displayed, the first image will be displayed.

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Use the 'p', < or left arrow keys to display the previous image.  If pressed when the first image is displayed, the last image will be displayed.

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Use the 'c' key to display the center image.

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Enter a number and press Enter to display the that image.

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Use the 'm' key to minimize the display and browser.

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Use the 'X' key to delete the display and browser.

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Use the 'e' key to change the roi color to the next in the list.

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Use the 'a' key to change the annotation color to the next in the list.

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Use the 'b' key, pressed twice, to switch between blind and non-blind annotation.

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Use the 'N' key to enable or disable displaying negative values.

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Use the 'h' key to set the window function to High/Low.

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Use the 'w' key to set the window function to Window/Level.

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Use the 'g' key to set the colormap to grayscale.

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Use the 'G' key to set the graticule color to the next in the list.

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Use the 't' key to set the colormap to thermal.

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Use the 'i' key to set the display scale to scale each image.

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Use the 'S' key to enable or disable smoothing the display image.

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Use the 's' key to set the display scale to scale all images to the maximum range of the images.

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Use the '+' key to increase the display image zoom.

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Use the '-' key to decrease the display image zoom.

Spectroscopy only options

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Use the 'l' key to move one spectral point to the left.

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Use the 'r' key to move one spectral point to the right.

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Use the 'u' key to move one spectral point up.

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Use the 'd' key to move one spectral point down.

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Use the 'o' key to turn on/off the susceptibility correction for the pixel.

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Use the left or right arrow keys to shift a spectra left or right 1 position.

The mouse button operation will change if the Region of Interest/Volume of Interest Window is displayed.

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Window/Level Bar

This bar is used to display the current colormap being applied to the displayed images. It can also be used to set the minimum and maximum displayed pixel values or the width and center of the displayed pixel value.  The operation of this bar is dependent on the setting for Window Function.  Changing the width and center will also update the Window Center/Width in the Dicom header.

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Window/Level Entries

These entries are used to display and set the minimum and maximum displayed pixel values or the width and center of the displayed pixel values.  The type of entries displayed is dependent on the setting for Window Function.  Changing these values will also update the Window Center/Width in the Dicom header.

bullet Low/High, Enter the minimum and maximum pixel values to display.
bullet Window/Level, Enter the width and center of the pixel values to display.
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Press X on the lower left of the image to delete all images from the Browser Window. (See key shortcuts 'X')

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Press - to minimize the display and browser. (See key shortcuts 'm')

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Press 1, 2, 3, or 4, corresponding to the display/browser number, to maximize the display and browser.  These buttons will be shown in the Toolbar when the corresponding display and browser is minimized.

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Edit Menu

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Use Edit->Clear->

bullet Region to clear the region of interest on the Display Window.
bullet Volume to clear the volume of interest associated with the Display Window.
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Use Edit->Invert->

bullet Region to invert the region of interest in the Display Window.
bullet Volume to invert the volume of interest associated with the Display Window.

These operations can also be performed from the Region of Interest/Volume of Interest Window.

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Options->Display Menu

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Scale to change the relationship of scaling to the other images. (See key shortcuts 's', 'i'')

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Set will scale all images, loaded or created together, to the maximum range of all the images loaded or created together.

bullet Image will scale each image to its own maximum range.
bullet None will not perform any scaling, this is used for slides and RGB images created in the Math dialog.
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Zoom to change the size of the displayed image. (See key shortcuts '+', '-')

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1/16 will display the image as 1/16 of its actual size.

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1/8 will display the image as 1/8 of its actual size.

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1/4 will display the image as 1/4 of its actual size.

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1/2 will display the image as 1/2 of its actual size

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1 will display the image as its actual size

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2 will display the image 2 times its actual size

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4 will display the image 4 times its actual size

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8 will display the image 8 times its actual size

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16 will display the image 16 times its actual size

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Display Method to change the smoothing of the displayed image.

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Sample/Replicate will sample pixels if the image size displayed is smaller than the actual size and replicate pixels if the image size displayed is larger than the actual size.

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Ave/Int will average pixels if the image size displayed is smaller than the actual size and interpolate pixels if the image size displayed is larger than the actual size.

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Avg/Bic will average pixels if the image size displayed is smaller than the actual size and interpolate pixels, using Bi-Cubic splines, if the image size displayed is larger than the actual size.

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Split Display to change how many images appear in the Display Window.

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1 will display 1 image in the Display Window.

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2x2 will display 4 images in the Display Window as a 2x2 grid.

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4x4 will display 16 images in the Display Window as a 4x4 grid.

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8x8 will display 64 images in the Display Window as a 8x8 grid.

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16x16 will display 256 images in the Display Window as a 16x16 grid.

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32x32 will display 1024 images in the Display Window as a 32x32 grid.

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Display All to fill a split display will all available images from the browser.

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Colormap to change the colors used to display images.  Window Form modifies, the interpretation of this colormap. (See key shortcuts 't', 'g'')

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Select Gray for a gray linear colormap with black representing the minimum displayed pixel value, white representing the maximum displayed pixel value and increasing intensities of gray in- between.

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Select Thermal for a thermal linear colormap with black representing the minimum displayed pixel value, white representing the maximum displayed pixel value and thermal colors in-between.

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Select RGB for a pseudo-color colormap using limited combinations of red, green, and blue.

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Select Fluorescent for a fluorescent colormap.

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Select Rainbow for a rainbow colormap.

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Select Blue for a blue linear colormap with black representing the minimum displayed pixel value, blue representing the maximum displayed pixel value and increasing intensities of blue in-between.

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Select Red for a red linear colormap with black representing the minimum displayed pixel value, red representing the maximum displayed pixel value and increasing intensities of red in-between.

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Select Green for a green linear colormap with black representing the minimum displayed pixel value, green representing the maximum displayed pixel value and increasing intensities of green in-between.

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Window Function to change the functionality of the window/level bar. (See key shortcuts 'h', 'w')

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Select High/Low to use the left mouse to set the maximum pixel value and the right mouse button to set the minimum pixel value on the Window/Level Bar.  Press or press and hold the mouse buttons to perform any changes. The Window/Level Entries will be for the Low and High displayed pixel values.

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Select Window/Level to use the left mouse to increase/decrease the range of pixel values and the right mouse button to change the center pixel value on the Window/Level Bar. Press and hold the mouse buttons to perform any changes.  The Window/Level Entries will be for the Width(Window) and Center(Level) of the display pixel values.

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Window Form to change the function of the colormap.  All pixel values below the minimum displayed pixel value will be displayed the same as the minimum displayed pixel value. All pixel values above the maximum displayed pixel value will be displayed the same as the maximum displayed pixel value. Use the Window/Level Bar or Window/Level Entries to set the minimum and maximum displayed pixel values.

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Select Ramp to use a linearly increasing colormap.

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Select Sawtooth to use a linearly increasing colormap, but display the maximum displayed pixel value as black.

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Select Square to use black for the minimum displayed pixel value and black for the maximum displayed pixel value. All displayed pixel values in-between will displayed as white.

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Select Reverse to use a linearly decreasing colormap, using white for the minimum displayed pixel value and black for the maximum displayed pixel value.

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Select Shark Fin to use a linearly decreasing colormap, using black for the minimum displayed pixel value and black for the maximum displayed pixel value.

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Roi->

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Draw Color to change the colors used to draw regions of interest. (See key shortcuts 'e')

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Designate white as the color for drawing regions of interest.

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Designate black as the color for drawing regions of interest.

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Designate red as the color for drawing regions of interest.

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Designate green as the color for drawing regions of interest.

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Designate blue as the color for drawing regions of interest.

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Designate yellow as the color for drawing regions of interest.

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Darken the image where the region of interest is drawn.

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Lighten the image where the region of interest is drawn.

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Erase Color to change the colors used to erase regions of interest.

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Designate white as the color for erasing regions of interest.

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Designate black as the color for erasing regions of interest.

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Designate red as the color for erasing regions of interest.

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Designate green as the color for erasing regions of interest.

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Designate blue as the color for erasing regions of interest.

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Designate yellow as the color for erasing regions of interest.

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Annotate to change the color used for annotation on the the display images.  This is used to display information about the image, including patient, study, series, etc, unless in the Spectroscopy dialog with the graticule option.  In the Spectroscopy dialog with the graticule option, this is used to label the rows and columns of the spectra corresponding to the image. (See key shortcuts 'a', 'b')

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Designate white as the color for annotation on the display images.

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Designate black as the color for annotation on the display images.

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 Disable annotation on the display images.

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Designate white as the color for annotation on the display images, but disable any patient information.

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Designate black as the color for annotation on the display images, but disable any patient information.

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Graticule to change the colors used to draw graticules on the display images.  For spectroscopy processing, the outline of each spectra point is drawn on the image, with row, column positions indicated on the border of the image using the annotation color.  For all other processing, an X, Y axis is drawn with tick marks through the center of the image. (See key shortcuts 'G')

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Designate white as the color for the graticule on the display images.

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Designate black as the color for the graticule on the display images.

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Cursor to change the color of the cursor on the display images.

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Designate white as the color for the cursor on the display images.

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Designate black as the color for the cursor on the display images.

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Designate red as the color for the cursor on the display images.

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Designate green as the color for the cursor on the display images.

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Designate blue as the color for the cursor on the display images.

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Designate yellow as the color for the cursor on the display images.

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Designate cyan as the color for the cursor on the display images.

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Designate magenta as the color for the cursor on the display images.

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Negative to enable or disable the display of negative values. (See key shortcuts 'N')

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Smooth to enable or disable the smoothing of images before display. (See key shortcuts 'S')

Browser Window

This window is used to view and select images for the Display Window.  Images are loaded into the browser through the Image Load Dialog or as a result of Image Analysis. These images can be analyzed individually or as a group.

Note

Most of the settings for the Browser Window can be set through a resource file that is loaded at the start of the program.

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Browser Use (Images or Filenames)

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On the Images or Filenames

bullet Use the left mouse button to put the image in the Display Window.
bullet Use the right mouse button to delete the image from the Browser Window.
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Select Close from the window menu to delete all images from the Browser Window.

Note

See View->Show Images As-> on how to set the Browser Use to Images or Filenames.

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Browser Use (None)

bullet On the # Box
bullet Use the up arrow to put the next image from the Browser Window into the Display Window.
bullet Use the down arrow to put the previous image from the Browser Window into the Display Window.
bullet Enter a number, n, to put the nth image from the Browser Window into the Display Window.
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Select Close from the window menu to delete all images from the Browser Window.

Note

See View->Show Images As-> on how to set the Browser Use to None.

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Options->Browser Menu

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Show Images As->

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  Images to display images in the browser window.

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  Filenames to display filenames or image information in the browser window.

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  None to display a user-selectable image number in the browser window.

Note

See Browser Use for how this options affects the Browser Window

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Select Window/Level to enable applying the window/level of the Display Window to the Browser Window.

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Select Roi/Voi to enable the display of the region (and volume) of interest on the Browser Window images.

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Last modified: 01/17/05