# borderWidthFraction property

double borderWidthFraction
getter/setter pair

Ignore this fraction of pixels at the edge of the image when calculating statistics. Pixels at the edge of the image typically have poor statistics. Ignoring them and using only the inner pixels when calculating certain statistics can substantially improve the quality of the result. The value must be less than 0.5 but usually good values are between 0 and 0.15.

Default is 0.06

## Implementation

    double borderWidthFraction;