Image processing questions

Question 2 (1 point) Which one is the best approach to increase the contrast of a low-contrast image? (Choose 1 that is correct)

a. Geometric transformation b. Power law transformation c. Histogram equalization d. Log transformation

Question 3: What problem(s) with an image may be identified from its histogram? (Choose all that are correct. You receive all or nothing, no partial credit)

[ ]a) Contrast [ ]b) Exposure [ ]c) Dynamic range [ ]d) Brightness

Question 4: What is the effect of low-pass filters? (Choose all that are correct. You receive all or nothing, no partial credit)

[ ]a) Reduce Gaussian noise [ ] b) Sharpen the image [ ] c) Smooth the image [ ]d) Remove salt and pepper noise

Question 5 What approaches can be used to detect the edges in an image? (Choose all that are correct. You receive all or nothing, no partial credit)

[ ]a) Use second-order derivative [ ]b) Use Prewitt detector [ ]c) Use Canny detector [ ]d) Use first-order derivative