Answer:
"Any image can be broken down into a set of sinusoidal gratings" describes the concept of Fourier analysis or Fourier transform.
Fourier analysis is a mathematical technique that breaks down a complex signal or image into a combination of simpler sinusoidal waveforms (gratings) of different frequencies and amplitudes. This concept is based on the idea that any signal or image can be represented as a sum of sine and cosine waves with various frequencies and phases. By decomposing an image into its constituent sinusoidal components, it becomes possible to analyze and manipulate its frequency content, allowing for various applications such as image compression, noise filtering, and pattern recognition.
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