Uli Plank wrote:Explain, please. Are you referring to bit depth?
Spatial and color information will be lost also artifacts and additional noise can be introduced.
Here is some fancy argumentation (not written by me):
Resolution Diminution: Inherent to the debayering methodology is the necessity to conjecture the duo of unrecorded color values for each pixel, as the pixel itself records a singular color component among three. This conjectural process, inherently flawed, may culminate in the degradation of image detail and overall resolution. Subtleties such as intricate patterns or textures are susceptible to becoming obscured or manifesting moiré patterns, an outcome of the inaccuracies born from interpolation.
Fidelity of Color: Interpolation algorithms operate under presuppositions regarding the chromatic data of the scene, derived from adjacent pixels. These presuppositions are not invariably precise, engendering the possibility of chromatic distortions or inaccuracies, particularly conspicuous in regions populated with delicate color details or where abrupt color transitions occur.
Generation of Artifacts: The act of debayering is capable of engendering artifacts, including, but not limited to, unnatural colors or the appearance of zippering—jagged perimeters along areas of high contrast. While sophisticated demosaicing algorithms endeavor to mitigate these flaws, their manifestation remains a possibility, particularly within the confines of processing systems of diminished quality.
Augmentation of Noise: The debayering process, by its nature, may exacerbate the noise intrinsic to the original sensor data. This exacerbation is a consequence of the interpolation process, which amalgamates the values of several pixels, thereby potentially proliferating and intensifying noise. This phenomenon is particularly pronounced under conditions of minimal illumination or within sensors characterized by diminutive pixels.
Bit-depth is not a factor unless there are not enough bits to fully capture the dynamic range in linear light. Linear representation is just about the worst way of encoding video, a far better representation is log.