Entropy

How do I measure the amount of information within an image?

How do I measure the amount of information within an image?
  1. What is entropy of an image?

What is entropy of an image?

The entropy or average information of an image is a measure of the degree of randomness in the image. The entropy is useful in the context of image coding : it is a lower limit for the average coding length in bits per pixel which can be realized by an optimum coding scheme without any loss of information .

Frequency Why the frequency variation is negative in the curve of instantaneous frequency vs time for the faulted phase current?
Why the frequency variation is negative in the curve of instantaneous frequency vs time for the faulted phase current?
Can instantaneous frequency be negative?How are instantaneous phase and frequency related?What is instantaneous frequency in frequency modulation?Why...
Kalman Why does sequential update of Kalman Filter work when you have multiple sensors?
Why does sequential update of Kalman Filter work when you have multiple sensors?
Why covariance matrix is used in Kalman filter?How does Kalman filter predict?Why Kalman filter is optimal?What are the different stages in Kalman fi...
Nyquist Other end of Nyquist limit
Other end of Nyquist limit
What happens to the signal if it is sampled below Nyquist limit?What value is the Nyquist limit?What happens above Nyquist frequency?Why the Nyquist ...