I have questions in the ‘Noise region definition’ and ‘Noise generation process’ of the paper “A character degradation model for grayscale ancient document images”.
- In Noise region definition,
gcontrols the flatness of the regions. What does it exactly mean? How can we say that a noise region is flatter compared to another noise region?
Below is the illustration of the ellipse noise region within the document image. The green ellipse shape is defined to be the noise region.
- According to paragraph below, the average value bj of its 8-neighbours (in the initial grayscale image) is used for calculating values of all pixels in the line CiBj.
Does the average value of bj calculated by averaging the greyscale value of the adjacent pixels in north, northeast, east, south east, south, south west, west and north west?
Please refer to the paragraph below:
I just want to assess , if my comprehension in reading the article is right. Thanks.