The intensity profile of an image is the set of intensity values taken from regularly spaced points along a line segment or multi-line path in an image. In the traditional profile plot, the samples mean for each group are plotted against the variables. In this case, profile plots should not be constructed. These are only meaningful if all variables have the same units of measurement. Profile plots provide another useful graphical summary of the data. The profile plot consists of a sequence of equi-spaced vertical spikes with each spike representing a different variable in the multivariate data set. What does a profile plot look like?Ī profile plot is a graphical data analysis technique for examining the relative behavior of all variables in a multivariate data set. Reported in calibrated units (e.g., optical density) if Analyze>Calibrate was used to calibrate the image. This is the sum of the gray values of all the pixels in the selection divided by the number of pixels. Mean Gray Value – Average gray value within the selection.
Imagej calibrate plus#
Solidity from the material science point of view is simply the complement of the porosity, since porosity plus solidity should be 1, then S = 1-P. ImageJ calculates solidity as the area of a particle divided by its convex hull area. Measurements will now be shown using these settings. Type the known distance and units of measure in the appropriate boxes and click OK. In the Set Scale window the length of the line, in pixels, will be displayed. Measuring and Counting Objects Go to Analyze → Set Scale.