how to build grayscale image

Consider an 4 X 4 digital image A3, with 3-bit/pixel ( 0 – 7 gray scale levels and bin width =1). The numeric value per each pixel of image A.

• (a) Suppose that image A3 is uniformly quantized with 2-bit accuracy to generate new image A2. Compute the numeric values of image B per each pixel.
• (b) Repeat (a) but with 1-bit accuracy to generate new image A1, and compute the numeric values/pixels.
• (c) Find the memory capacity in bits for the images A1, A2 and A3.

Hint: The table below illustrated the quantization process of 8-bit and 4-bit respectively.

[Image Analyst]

http://www.mathworks.com/matlabcentral/answers/8626-how-do-i-get-help-on-homework-questions-on-matlab-answers

Answer 1

[Image Analyst]

Hint: divide A3 by a power of 2.