Intensity Transformation Functions MCQ

1. How is negative of an image obtained with intensity levels [0,L-1] with “r” and “s” being pixel values?
a) s = L – 1 + r
b) s = L – 1 – r
c) s = L + 1 + r
d) s = L + 1 + r


2. The general form of log transformations is ____________________.
a) s = c.log(1 + r)
b) s = c+log(1 + r)
c) s = c.log(1 – r)
d) s = c-log(1 – r)


3. Power-law transformations has the basic form of ________________, where c and ∆ are constants.
a) s = c + r^∆
b) s = c – r^∆
c) s = c * r^∆
d) s = c / r.∆


4. For what value of the output must the Power-law transformation account for offset?
a) No offset needed
b) All values
c) One
d) Zero


5. What is Gamma Correction?
a) A Power-law response phenomenon
b) Inverted Intensity curve
c) Light brightness variation
d) None of the Mentioned


6. Which process expands the range of intensity levels in an image so that it spans the full intensity range of the display?
a) Shading correction
b) Contrast sketching
c) Gamma correction
d) None of the Mentioned


7. Highlighting a specific range of intensities of an image is called _______________.
a) Intensity Matching
b) Intensity Highlighting
c) Intensity Slicing
d) None of the Mentioned


8. Highlighting the contribution made to total image by specific bits instead of highlighting intensity-level changes is called ____________________.
a) Intensity Highlighting
b) Byte-Slicing
c) Bit-plane slicing
d) None of the Mentioned


9. Which of the following involves reversing the intensity levels of an image?
a) Log Transformations
b) Piecewise Linear Transformations
c) Image Negatives
d) None of the Mentioned.


10. Piecewise Linear Transformation function involves which of the following?
a) Bit-plane slicing
b) Intensity level slicing
c) Contrast stretching
d) All of the Mentioned