The horizontal axis on the histogram represents the brightness level with the dark elements on the left and the bright
elements on the right. The brighter the element is, the further to the right it is. The height of each bar represents the
number of elements with the brightness associated with its position on the horizontal axis.
The top graph is a histogram representing the brightness of all the pixels in the image. The bottom graph represents the
center of modules in the symbol. The bottom graph only contains elements which are either definitively dark or
definitively bright. The bars are grouped together because all the dark or bright modules of varying brightness are close
to each other. In the upper histogram pixels between dark and bright are represented. These pixels are on the border
between dark and light modules, therefore they obtain a middle value of brightness.
The horizontal axis contains markers showing the global threshold (tall line) and the separation between B and C, and
between C and D modulation levels for both dark and light elements.
Note
: When grading according to ISO/IEC TR29158 (AIM-DPM), the histogram is labeled differently. The 0% and
100% labels on the horizontal axis are located at the means of the dark and light lobes of the histogram and there is
no C level because the DPM grading method uses only A, B, D and F levels for Cell Modulation.
Report Tab
To enable the Code Quality report to show in the
Report
tab, check the box for
Generate Code Quality reports
in the
Results History
pane of Setup Tool.
Note
: The Code Quality report contains the results specific to verification when the verification feature key is
installed and Verification is enabled in the Setup Tool window. The Code Quality report contains the results specific
to verification and separate from the previous Code Quality results that Process Control Metrics (PCM) normally
generated.
27
Examining the Results