Virtual Labs

Morphological Operations

1. A binary image consists of disks of sizes 3,7,9,15,17 pixels. We want to remove all the disks of size less than 13 pixels. Which morphological opeartion perform the task?

a: Erosion with structuring element(disk) of size 15 b: Erosion with structuring element(disk) of size 13 c: Dilation with structuring element(disk) of size 15 d: Dilation with structuring element(disk) of size 13

2. Which morphological operation is used for smoothing the contour of an object in grayscale image

a: Erosion b: Dilation c: Closing d: Opening