1. Using gray-level transformation, the basic function linearity deals with which of the following transformation?
A. log and inverse-log transformations
B. negative and identity transformations
C. nth and nth root transformations
D. All of the mentioned
2. Using gray-level transformation, the basic function Logarithmic deals with which of the following transformation?
A. Log and inverse-log transformations
B. Negative and identity transformations
C. nth and nth root transformations
D. All of the mentioned
3. Using gray-level transformation, the basic function power-law deals with which of the following transformation?
A. log and inverse-log transformations
B. negative and identity transformations
C. nth and nth root transformations
D. all of the mentioned
4. If r is the gray level of the image before processing and s after processing then which expression defines the negative transformation, for the gray level in the range [0, L-1]?
A. s = L – 1 – r
B. s = crᵞ, c, and ᵞ are positive constants
C. s = c log (1 + r), c is a constant and r ≥ 0
D. none of the mentioned
5. If r is the gray level of the image before processing and s after processing then which expression helps to obtain the negative of an image for the gray level in the range [0, L-1]?
A. s = L – 1 – r
B. s = crᵞ, c, and ᵞ are positive constants
C. s = c log (1 + r), c is a constant and r ≥ 0
D. none of the mentioned
6. If r is the gray level of the image before processing and s after processing then which expression defines the power-law transformation, for the gray level in the range [0, L-1]?
A. s = L – 1 – r
B. s = crᵞ, c, and ᵞ are positive constants
C. s = c log (1 + r), c is a constant and r ≥ 0
D. none of the mentioned
7. Which of the following transformations is particularly well suited for enhancing an image with white and gray detail embedded in dark regions of the image, especially when there is more black area in the image.
A. Log transformations
B. Power-law transformations
C. Negative transformations
D. None of the mentioned
8. Which of the following transformations expands the value of dark pixels while the higher-level values are being compressed?
A. Log transformations
B. Inverse-log transformations
C. Negative transformations
D. None of the mentioned
9. Although power-law transformations are considered more versatile than log transformations for compressing gray levels in an image, then, how are log transformations advantageous over power-law transformations?
A. The log transformation compresses the dynamic range of images
B. The log transformations reverse the intensity levels in the images
C. All of the mentioned
D. None of the mentioned
10. A typical Fourier Spectrum with spectrum values ranging from 0 to 106, which of the following transformation is better to apply.
A. Log transformations
B. Power-law transformations
C. Negative transformations
D. None of the mentioned