Edge enhancement is used to?

• A. Blur edges
• B. Adjust color balance
• C. Sharpen areas of differing brightness
• D. Reduce brightness

Answer: (C)

Edge enhancement focuses on making the boundaries between different brightness areas more distinct. It does this by boosting the contrast along edges, which enhances high-frequency details and makes transitions look crisper. That’s why it’s used to sharpen areas where brightness changes, rather than blur them, adjust color, or reduce overall brightness.