Spatial frequency

1. What is the meaning of spatial frequency?
2. What is an example of spatial frequency?
3. What is spatial frequency in vision?
4. What is spatial frequency formula?

What is the meaning of spatial frequency?

The spatial frequency is defined as line pairs per angular extent of the target, and the phase specifies the relative location of the target image to the detector array raster. From: Encyclopedia of Modern Optics, 2005.

What is an example of spatial frequency?

Spatial frequency describes the periodic distributions of light and dark in an image. High spatial frequencies correspond to features such as sharp edges and fine details, whereas low spatial frequencies correspond to features such as global shape.

What is spatial frequency in vision?

"Spatial frequency" refers to the number of pairs of bars imaged within a given distance on the retina. One-third of a millimeter is a convenient unit of retinal distance because an image this size is said to subtend one degree of visual angle on the retina.

What is spatial frequency formula?

As spatial frequency = k/2π, this gives 1/2π wavelengths per metre and the wavelength λ = 2π/k = 2π/1 = 2π m.