Image processing - practical session 6

In thresholding based on median value technique, equal number of pixels in foreground/background are assumed.

• True

• False

Entropy is maximum when all the pixel intensity values are the same.

• True

• False

Bernsen's method works well in flat background regions.

• True

• False

In Bernsen's method, opening and closing can be used to obtain I_min and I_max images, respectively.

• True

• False

In Otsu's thresholding method, variances of classes are not computed while computing between-class variance.

• True

• False

Which of the following is better when the image has varying illumination?

• Otsu's method

• Minimum Error

• Niblack's method

• Maximum Entropy

In local adaptive thresholding, same threshold is used for all pixels in the local window.

• True

• False