Color, Red, Green, Blue and Grey Options Window


 Color, Red, Green, Blue and Grey Options Window

 This window enables you edit the parameters for the Color, Red , Green, Blue
 and Grey scanmodes.

 The mentioned scanmodes have the same parameters, but they are independent
 from another. If you edit the options for the red scanmode, then only this
 options are changed.

 The following gadgets appear in this window:

 Exposure Time : The exposure time or analog brightness adjustment has a
                 valid range from at least -18% to +21 % in steps of 3%.
                 This range may vary for some scanner models.

 Contrast      : The contrast setting has a valid range from at least
                 -42% to +49% in steps of 7%.
                 This range may vary for some scanner models.

 Digital       : For scanners that support digital brightness adjustments
 Brightness      this parameter has a valid range from -100% to +100%.


The following parameters are described by quoting from the Microtek
Programmers Reference:

 Speed         : "Lower speeds can be used to prevent deterioration of image
                  quality when the <Scan Buffer> is small and the image must
                  be scanned in segments."

 Shadow        : "... setting a value other than 0 in this register makes
                  the darkest scanned shades (all raw pixels values equal
                  to or less then the register value) come out as pure black
                  (0) and linearly maps the remaining scanned shades (all
                  raw pixel values greater than the shadow adjustment value
                  and less than the highlight register value) into the range
                  of 0 through 255."

 Midtone       : "... setting a value other than 128 in this register causes
                  all raw scanned values from 0 (or the shadow adjustment
                  register value) through the midtone adjustment register
                  value minus one to be mapped linearly into the range of
                  0 through 127, and all raw scanned values from the midtone
                  adjustment value through 255 (or the highlight adjustment
                  register value) to be mapped linearly into the range of
                  128 through 255."

 Highlight     : "... setting a value other than 256 in this register makes
                  the lightest scanned shades (all raw pixels values equal
                  to or greater then the register value) come out as pure
                  white (255) and linearly maps the remaining scanned shades
                  (all raw pixel values less than the highlight adjustment
                  value and greater than the shadow register value) into the
                  range of 0 through 255."

 Cancel        : Throw away changes.

 OK            : Accept changes.


NOTE: Parameters which are not supported by the scanner or ScanTek are
      ghosted.
Do you have any suggestions or questions about ScanTek then email to scantek@gmx.de