A short quiz on OpenCV and simple image processing operations

Adrian F. Clark

  1. For an image of unsigned bytes, how can it be contrast-reversed?

  2. In OpenCV, if Y indexes lines, X columns and C channels, the right nesting >of loops is

  3. In the HSV colour space, the complementary colour of green is:

  4. Histogram equalization involves:

  5. After contrast-stretching, an over-exposed image which has only a few grey levels occupied will have a histogram that

  6. An image which is under-exposed will have a histogram that

  7. OpenCV was initially developed in

  8. What is plotted along the abscissa (x-axis) of a histogram?

  9. What is contrast stretching?

  10. With additive colours, yellow is a mixture of

  11.