Autodesk 00126-050008-1640A User Guide - Page 90

WiseImage - User's Guide By Depending on the chosen tab, this list allows you to select a binarization method. For example, if the Range tab is chosen, you can choose Range by Grey, Range by RGB or Range by HSV. Channel You can choose a color information channel type from this list. The term color information channels stands for the information on the color components of image pixels by a certain color representation model. The number of available channels depends on the image type. Every color image has five channels: Red to store information on red color, Green to store information on green color, Blue to store information on blue color, Hue to store information on hue, and Grey to store information on grey color components (brightness) for each color. For grayscale images only the Grey channel is used. Channel histogram window The histogram of the selected channel is displayed in the Channel list. The histogram is a graphical representation of a color component value distribution by image pixels, defined by a selected channel. A component value is measured along the histogram's horizontal axis (lesser values are on the left, greater values are on the right). Along the vertical axis a normalized number of pixels with the specified color component value are placed. Thus, the histogram extremes correspond to the most frequent component values, and the minimums correspond to the least frequent values. Depending on the selected binarization method, either one or three triangular sliders can appear in the bottom part of the histogram. These sliders allow you to adjust the parameters of the current binarization method, i.e. to specify range parameters and the threshold level value. Layer Allows the specification of a layer name, on which a monochrome image will be placed after binarization, and a raster image color. Apply Starts the binarization procedure. Template Used to store and load the parameters for all binarization methods. Dialog box tabs There are two tabs in the Binarization dialog box: Range and Threshold. The first one is used to specify the binarization range parameters; the second is used to specify the threshold parameters. 92