Question

In digital image of M rows and N columns and L discrete gray levels, calculate the bits required to store a digitized image for M=N=32 and L=16.

(a) 16384

(b) 4096

(c) 8192

(d) 512

This question was addressed to me in unit test.

This intriguing question originated from Representing Digital Images topic in division Digital Image Fundamentals of Digital Image Processing

Answer 1

The correct option is (b) 4096

To elaborate: In digital image of M rows and N columns and L max gray levels i.e. an integer power of 2 for each pixel. The number, b, of bits required to store a digitized image is: b=M*N*k.

For L=16, k=4.

i.e. b=4096.