Image Arithmetic
1. In image arithmetic, how are the corresponding pixels of two images combined during an arithmetic operation?
2. What is the valid pixel-value range of an 8-bit grayscale image?
3. Which image arithmetic operation always produces a non-negative result when applied to two image pixel values?
4. Two 8-bit images are added pixel-wise. What is the maximum possible value of a resulting pixel before any range adjustment is performed?
5. What problem occurs when an arithmetic operation produces a pixel value greater than 255 for an 8-bit output image?
6. Which method maps the minimum and maximum values of an arithmetic result to 0 and 255, respectively, for an 8-bit output image?
7. Two 8-bit images are multiplied pixel-wise. What is the maximum possible value of a resulting pixel before range adjustment?
8. Consider two 8-bit images A and B. If A(x,y) = 40 and B(x,y) = 100, what is the output pixel value at (x,y) when the difference operation is applied?
9. Why is a final range-adjustment step often required after performing arithmetic operations on 8-bit images?