Morphology

In morphological operations, the 'structuring element' is used to

• Filter noise
  transformations
  
  

• Define the shape and size of

• Smoothen the image

• Compress the image

Which operation is typically used to remove small white noise in a binary image?

• Erosion

• Dilation

• opening

• closing

Which of the following is true for 'Opening' and 'Closing'?

• Opening is dilation followed by erosion

• Closing is erosion followed by dilation

• Both are linear transformations

• Opening smoothens boundaries, while closing fills holes

Which structuring element is commonly used for edge detection in morphological operations?

• square

• Diamond

• Cross

• Line

In morphology, what happens when erosion is applied iteratively on a binary image?

• Objects expand gradually

• Objects shrink gradually

• Image resolution improves

• Contrast of the image increases

The output of morphological 'gradient' is obtained by:

• Subtracting dilation from erosion

• Adding erosion and dilation

• Subtracting erosion from dilation

• Performing erosion followed by opening

In morphological operations, "skeletonization" is used to

• Find the centerline of binary objects

• Remove noise from the image

• Enhance the edges of objects

• Fill holes in the background

The structuring element in morphological operations is usually represented as a

• vector

• matrix

• point

• histogram

Which operation can "smooth" the contour of an object in a binary image?

• A. Erosion

• B. Opening

• C. Closing

• D. Both B and C

In grayscale morphological operations, the structuring element is applied on:

• pixel intensities
  

• Frequency domain coefficients

• Edges of the image

• Histogram bins