4 ms·
The DC term is always at the lowest spatial frequency (DC.) So, if you plot your FT so that the DC term is in the middle, then the DC term is in the middle :)
by npk 19y ago
The DC term is always at the lowest spatial frequency (DC.) So, if you plot your FT so that the DC term is in the middle, then the DC term is in the middle :)
It provides NO information about the varying levels, it tells you something like the sum of all the pixels / number of pixels. If you have a 10x10 uniform image, all pixels=1, the DC term will by 1/100.
Again, the DC Term is the absoloute lowest spatial frequency, hence it's DC.
- ambiversive 19y agoThe DC term also known as ao, Co, and Do (in the trigonometric, compact, and exponential forms) is the average value of the signal over its period (if it is periodic). It is the integral of the signal over one period divided by the period.