Digital Image Processing Quiz

Digitization of spatial co-ordinates (x,y)is called

• gray level quantization

• finite sampling

• image sampling

• image quantization

A 128X128 image with 64 gray levels requires ________bits of storage

• 4096

• 8192

• 12288

• 98304

D distance is also called as

• city block distance

• chess board distance

• Euclidean distance

• mean distance

Image transforms are needed for

• conversion information form spatial to frequency

• spatial domain

• time domain

• both b&c

the Walsh and hadamard transforms are ___________in nature

• sinusoidal

• cosine

• non-sinusoidal

• cosine and sine

Which of the following is a second-order derivative operator?

• Histogram

• Laplacian

• Gaussian

• None of the mentioned

Dark characteristics in an image are better solved using ________

• LaplacianTransform

• GaussianTransform

• Histogram Specification

• Power-law Transformation

Butterworth filter has ___________transition

• smooth

• sudden

• peak

• b&c

image restoration is to improve the _______________of the image

• quality

• noise

• intensity

• colour

human perception of colour closely resembles the ____________clour model

• CMY

• RGB

• HSI

• CMYK