CFA phase
Definition
The spatial offset of the CFA mosaic pattern in an image. Pasting a region from a different image or after a non-CFA-aligned crop can introduce a phase shift that breaks the expected periodic pattern.
Related terms
- Camera noise model
- A mathematical description of a sensor's noise as a function of signal level, combining signal-dependent shot noise and signal-independent readout noise. The...
- CFA (Colour Filter Array)
- The mosaic of colour filters placed over a sensor so that each photosite captures one colour channel. The Bayer pattern (RGGB arrangement)...
- Demosaicing
- The interpolation step that reconstructs all three colour channels at every pixel from the single-channel Bayer mosaic. The algorithm used is camera-specific...
- Noise residual
- The high-frequency component of an image obtained by subtracting a denoised version from the original. The residual retains camera-model fingerprint noise and...
- Steganography
- Concealing one file inside another in a way that hides the existence of the hidden file. LSB image manipulation, JPEG DCT coefficient...
Explained in
- Noise and CFA Inconsistency DetectionThe spatial offset of the CFA mosaic pattern in an image. Pasting a region from a different image or after a non-CFA-aligned crop can introduce a phase shift t...