Question

run-length encoding (rle) is a data compression technique that replaces
uns\ (sequences of bits with the same value) with a number representing the length of the run.

this is an rle encoding for an 8x8 black & white icon:

8
1,2,2,2,1
1,2,2,2,1
8
8
2,4,2
1,1,4,1,1
8

in this rle scheme, the numbers represent alternating runs of black and white pixels and the first number in each line represents a run of white pixels.

what does this icon look like?

choose 1 answer:

a : a smiling face

b : a frowning face

c : a surprised face

d : a neutral face

Explanation:

To determine the icon, we analyze the RLE data. Each line starts with white runs, alternating with black. Let's decode key lines:

• Top lines (e.g., 1,2,2,2,1) suggest eyes (small white, then black, etc.).
• Middle lines with 2,4,2 and 1,1,4,1,1 form a mouth. The 4 in the mouth line (black run) is horizontal, curved down (frowning) or up (smiling). The 1,1,4,1,1 has a central black run (mouth) with small white on sides, matching a frowning face's downturned mouth.
• A frowning face has downturned mouth, consistent with the RLE's mouth encoding.

Answer:

B. ∴: A frowning face