Spatial resolution
Definition
The finest detail a camera system can record, determined by pixel size and lens quality, measured in line pairs per millimetre or pixels per inch. Detail below the resolution limit is never captured.
Related terms
- CLAHE
- Contrast Limited Adaptive Histogram Equalisation. Divides the image into local tiles, equalises each tile's contrast separately, and blends results. Recovers shadow detail...
- Deconvolution
- A computational technique that estimates the PSF and inverts its effect to recover a sharper image. The quality depends entirely on how...
- Nyquist limit
- The sampling theorem's constraint: to faithfully record a feature, the sensor must sample it at least twice per cycle. A feature smaller...
- Point spread function (PSF)
- A mathematical description of how the imaging system spreads the light from a single point source across neighbouring pixels. Defocus, diffraction, and...
- Super-resolution
- Methods that attempt to produce an image with higher pixel density than the source. Interpolation-based SR fills in values by estimation; learning-based...
Explained in
- Image Enhancement: Principles and the Resolution BarrierThe finest detail a camera system can record, determined by pixel size and lens quality, measured in line pairs per millimetre or pixels per inch. Detail below...