IP andCV

What is meant by Region of Interest (ROI) operations?

• Dilation

• Masking

• Shading correction

• None of the above

Answer explanation

Explanation: In image processing, masking is a procedure of defining a smaller image, which helps modify the larger image.

Blurring an image with the help of a smoothing filter may lead to noise reduction.

• True

• False

Answer explanation

Noise reduction is obtained by blurring the image using a smoothing filter. Blurring is used in pre-processing steps, such as removing small details from an image prior to object extraction and bridging small gaps in lines or curves.

What is the output of a smoothing, linear spatial filter?

• Median of pixels

• Maximum of pixels

• Minimum of pixels

• Average of pixels

Answer explanation

Explanation: The output or response of smoothing, the linear spatial filter, is simply the average of the pixels contained in the neighborhood of the filter mask.

Smoothing filter is used to remove ___ from an image.

• Smooth transitions of brightness levels

• Smooth transitions of grey levels

• Sharp transitions of brightness levels

• Sharp transitions of grey levels.

Which of the following is the disadvantage of a smoothing filter?

• Blur inner pixels

• Blur edges

• Sharp edges

• Sharp transition

Which of the following step deals with tools for extracting image components those are useful in the representation and description of shape?

• Segmentation

• Representation and description

• Compression

• Morphological processing

In which step of the processing, assigning a label (e.g.: "vehicle") to an object based on its descriptors is done?

• Object recognition

• Morphological processing

• Segmentation

• Representation and description

What role does the segmentation play in image processing?

• Deals with extracting attributes that result in some quantitative information of interest

• Deals with techniques for reducing the storage required saving as image, or the bandwidth required transmitting it

• Deals with partitioning an image into ins constituent parts or objects

• Deals with property in which images are subdivided successively into smaller regions

An ___ consists of erosion followed by dilation.

• Close operation

• Open operation

• none of the above

• both 1 and 2