The main part of the tool is the area in which the gray-value profile of the image along an ROI is displayed in blue.
The horizontal axis represents the length of the ROI in pixels and therefore gives the position of the gray values along the ROI.
The dynamic parts of the line profile area are the two colored lines, which can be manipulated. The vertical green and red lines denote the minimum and maximum selected position along the ROI, respectively. Those lines are also displayed in the active graphics window. Their visualization can be adapted under Output. Another dynamic part is the vertical coordinate axis, which displays the gray values in the image. For byte images, this ranges from 0 to 255. As it comprises only the gray-value range between darkest and the brightest pixel, these values do not usually start with 0 and end with 255. For all other image types, for example, real images, the horizontal axis runs from the minimum to the maximum gray value of the image and the labeling of the axis is changed accordingly.
Initially, the line profile is displayed at full vertical range, for example, up to the peak value. With the buttons to the left of the line profile display, you can modify the displayed part:
The common interaction with plot windows is described in section “Plot Windows”.