Specifications
Print2CAD OCR 2013 - 92
11.2 Threshold for Colors Black and White
It may be necessary of the user to dene what value of brightness is white and what value
of darkness is black so that only bright pixels of raster images get allocated to the color
white. When vectorizing in black and white, the user-dened threshold for what is black,
assigns all such pixels the color black. All remaining pixels are assigned the color white.
Figure: Diagram of the transformation of bright pixels to the color white or dark
pixels to the color black with the help of thresholds