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alphacontrol

(ee2200/alphacontrol.m)

Help text

 Alpha Control Panel / EE2200ts Demonstration / EE2200

 Craig Ulmer  /  gt7667a at prism.gatech.edu  /  ulmer at eedsp.gatech.edu 

 NOTE:
      The following variables are manipulated by this script. The user
      should create these images before the script is run.
  
      xx  =  Original source Picture
      xxa =  Picture that has been run through filter A
      xxb =  Picture that has been run through filter B

 This script will allow the user to select what percentage of filters
 A and B should be used to generate an output. The following equation
 determines the percentages for the output.
               100 x (1 - Alpha) = Percent due to filter A
               100 x  Alpha      = Percent due to filter B

 Initially, a window is opened with the following options.

     Alpha  -  A slider bar to determine the variable Alpha
     Make New Plots - Generates new plots based on the slected alpha 
     Print - Draw the current alpha, and send to printer
     Allow Multiple Displays - When unchecked, will only generate
             one output window(The script will revise the window 
             each time a Make New Plots is selected. When Checked,
             this script will generate a new window each time Make
             New Plots is pressed, allowing for multiple alpha
             plots to be displayed at once
     Quit - Quits the script, clearing out all variables called by
            this script. Note that figure windows are NOT killed,
            allowing the user to keep what he or she has plotted.

 The Alpha Control Panel generates a window with the results of the stages
 of the system. Input, Filter A, Filter B, and Output are all plotted.
 Note that the Input and Output are SCALED in color, such as in the 
 "Show_img" function. The pictures for Filter A and Filter B are NOT
 scaled, resulting in true image representations. (If the Filter A and
 Filter B images WERE scaled, then they would remain constant for all
 alpha. The purpose is to see what the pictures look like at different
 percentages of intensity).

 BUGS:
      Currently, if the user closes the ouput window with the window
      close button, the alpha control pannel will try plotting to
      a window that is not open. The result is a script failure. The
      script needs to check to make sure the window is still there
      before plotting(using some error detection). To avoid this, simply
      instruct the user not to close the Plots Window until finished with
      this script.

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