Color Defect Map (CDM)

Hotkey: +
Menu: Image > Color Defect Map PLUS+
Context menu: Color Defect Map PLUS+

This image shows the Total Deviation (Defect depth) in different colors. Between measured points the values are interpolated to create a continuous surface. The color texture is enhanced by a pointed gray shade. In the PLUS map the numbers are superimposed.

+14 .. +10 dB

+9 .. +5 dB

+4 .. 0 dB

0 .. -4 dB

-5 .. -9 dB

-10 .. -14 dB

-15 .. -19 dB

-19 dB

Defect depth or total deviation are norm-related values. A normal CDM is green -- Click here for more information about this value type, the meaning and interpretation

CONCLUSION: This image type makes defects visibleat a glance. The signalling nature of colors you get an overall impression even in small representations (Series Window). Alterations in the field have nearly natural shapes by interpolation. The PLUS map shows the measurement pattern and the exact deviation from normal in decibel

Further information

This button switches between the use of two different green colors for the "normal" range (button prominent and colored = standard) and one green color (button pressed and gray). Two colors enables the recognition of topographical anomalies in visual fields with normal sensitivity.

In the periphery there are some areas where the normal value is < 0dB. Defect depth / total deviation cannot be calculated. These areas may be missing, in the CDM PLUS there is a ? question mark instead of a number.

Interpolation enlarges the defect areas of adjacent defect points compared to singular defect points. Thus works like a graphical "cluster analysis"