Question

Run-length encoding (RLE) is a data compression technique that replaces "runs" (sequences of bits with the same value) with a number representing the length of the run.
RLE can be used to compress color images, especially when the colors are from a limited palette.
The following is a run-length encoding of an 8x8 icon with 3 colors. "R" signifies a red run, "G" signifies a green run, and "Y" signifies a yellow run.
3Y,2R,3Y
2Y,1R,2G,1R,2Y
1Y,1R,4G,1R,1Y
1R,6G,1R
1R,6G,1R
1Y,1R,4G,1R,1Y
2Y,1R,2G,1R,2Y
3Y,2R,3Y
What does this icon look like?
The icons have been magnified for clarity.
Choose 1 answer:
Choose 1 answer:
(Choice A) A green square with a red outline on a yellow background A square
A
A green square with a red outline on a yellow background A square
(Choice B) A green pentagon with a red outline on a yellow background A pentagon
B
A green pentagon with a red outline on a yellow background A pentagon
(Choice C) A green diamond with a red outline on a yellow background A diamond
C
A green diamond with a red outline on a yellow background A diamond
(Choice D) A green circle with a red outline on a yellow background A circle
D
A green circle with a red outline on a yellow background A circle
(Choice E) A green triangle with a red outline on a yellow background A triangle
E
A green triangle with a red outline on a yellow background A triangle

Answers

GPT-4o mini
To interpret the run-length encoded (RLE) data into an 8x8 icon, let's break down each line of the RLE representation.

The RLE format specifies runs of colors, with the format being `<count><color>` where:
- `Y` = Yellow
- `R` = Red
- `G` = Green

Let's lay it out according to the RLE provided:

1. `3Y,2R,3Y` translates to:
```
Y Y Y R R Y Y Y
```

2. `2Y,1R,2G,1R,2Y` translates to:
```
Y Y R G G R Y Y
```

3. `1Y,1R,4G,1R,1Y` translates to:
```
Y R G G G G R Y
```

4. `1R,6G,1R` translates to:
```
R G G G G G R
```

5. `1R,6G,1R` again translates to:
```
R G G G G G R
```

6. `1Y,1R,4G,1R,1Y` translates to:
```
Y R G G G G R Y
```

7. `2Y,1R,2G,1R,2Y` translates to:
```
Y Y R G G R Y Y
```

8. `3Y,2R,3Y` again translates to:
```
Y Y Y R R Y Y Y
```

Now, let's assemble these lines into an 8x8 grid (connected line by line):

```
Y Y Y R R Y Y Y
Y Y R G G R Y Y
Y R G G G G R Y
R G G G G G R
R G G G G G R
Y R G G G G R Y
Y Y R G G R Y Y
Y Y Y R R Y Y Y
```

When visualizing these colors on a typical display, the pattern suggests that we have a green shape (likely a square or similar) with a red outline on a yellow background.

- The outermost layer (rows 1 and 8, and the outlines in rows 2 and 7) appears primarily yellow.
- The next layer (rows 3-6) contains primarily green with red outlines.

Among the choices provided, the description that most accurately fits the pattern is:

**Choice A: A green square with a red outline on a yellow background.**

Thus the answer is:
**(Choice A)** A green square with a red outline on a yellow background.

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