Adrian F. Clark
Histogram equalization involves:
using the cumulative histogram as a look-up table
For an image of unsigned bytes, how can it be contrast-reversed?
subtract each pixel from 255
An image which is under-exposed will have a histogram that
has a peak at low grey-level values
OpenCV was initially developed in
What is contrast stretching?
expanding the available grey levels to fill the range used for displaying images
In the HSV colour space, the complementary colour of green is:
In OpenCV, if Y indexes lines, X columns and C channels, the right nesting >of loops is
C inside X inside Y
With additive colours, yellow is a mixture of
red and green
After contrast-stretching, an over-exposed image which has only a few grey levels occupied will have a histogram that
tends to show small spikes across the entire range of grey levels
What is plotted along the abscissa (x-axis) of a histogram?