Adaptive Binarization

Adaptive Binarization

This command is designed for correcting raster images that have been acquired by scanning blueprint and sepias in Greyscale mode.

This command enhances those images by improving the binarization in order to make the images readable. Because binarizing images on which the background has a different brightness and the noise and speckles are spread unevenly produces poor results, the Adaptive Binarization tool combines binarization with cleaning of the image. The program estimates the level of noise in the area being processed and does its best to extract the useful data.

The command is applicable only to greyscale images.

To run Adaptive Binarization

Choose Adaptive Binarization from the Image menu.

All the parameters of this dialog are set using the sliders or by typing appropriate values in corresponding fields.
1. Set the Radius value –the radius within which the program will be analysing the level of noise to be cleaned. The greater this value, the more pixels surrounding the colour transition boundary will be analyzed.
2. Select the Smooth checkbox. Using smoothing with the Binarize checkbox set to off produces a cleaner image with the background evened and line objects revealed.
3. Set the Binarize checkbox to create a monochrome image.
4. Click Ok after achieving satisfactory results in the preview window.