Triton TargetPro - Manual (Page 47)

June 2004 TargetPro™ User's Manual
• Top (slider bar): Crops the image p pixels at a time from the top; moving
the slider bar to the right increases the number of pixels to be cropped
from the image.
• Bottom (slider bar): Crops the image p pixels at a time from the bottom;
moving the slider bar to the right increases the number of pixels to be
cropped from the image.
• Resize with rotation (check box): If this is checked, you can combine
resizing an image at the same time you are rotating it.
4.1.4 The Image Processing Area
The slider bars and buttons in this area are used to enhance an image while
keeping colors constant. Numerical values representing the degree of
change (that is, the amount of the applied effect) appear in the fields to the
right of the slider bars.
The slider bars in this area are:
• Min (slider bar): This affects results in the Histogram window and in the
Image Preview window. If Min is set to, say, four percent, then the
bottom four percent of the pixel intensities (black to gray, maybe) are
set to black. Remaining intensities are linearly expanded to fill the
range of 0 to min. Range values can be between 0.10% and 100%.
• Max (slider bar): This affects results in the Histogram window and in the
Image Preview window. If Max is set to, say, four percent, then the top
four percent of the pixel intensities (almost white to total white) are set
to highest intensity (255 or 65535, depending on whether the image is
8 or 16 bit). Remaining intensities are linearly expanded to fill the range
of 0 to max. Range values can be between 0.10% and 100%.
• Average (slider bar): This control sets the number of pixels to average
around each output pixel, affecting the degree of image blur.
• Sharp (slider bar): Sliding the bar to the right increases sharpness. This
emphasizes fine edges in the image. The bar initially is at the left and
displays a value of 0, indicating no sharpness is being applied. The
range of possible values is -10% (least sharp) to 10% (sharpest). (The
units are just relative to the function and are not meant to suggest any
mathematically based values.)
All four slider bars in the TVG dialog box have a range of 0.0% to 100.0%.
The defaults are 50.0% for Brightness, 20.0% for Contrast, 5.0% for Window
Size, and 5.0% for Smoothing. This function only applies to black and white
images.
Chapter 4: Object Modification and Classification 36