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What is Understanding Spatial Frequency in Vision about?
Spatial frequency refers to how often sinusoidal components of a periodic structure repeat per unit of distance. It is measured in cycles per meter in SI units. In image processing, it is often expressed in cycles per millimeter. Any visual stimulus can be represented by plotting light intensity along lines through it, and Fourier analysis can break it down into constituent sine waves. In the visual cortex, it is theorized that neurons respond selectively to different orientations and frequencies of sine wa
- Author
- Tanzim
- Language
- EN