Understanding Signal-to-Noise Ratio in Camera Modules

The Signal-to-Noise Ratio (SNR) is a pivotal metric in the realm of camera modules, reflecting the balance between the clarity of the captured image and the interference from background noise. An elevated SNR indicates a superior image quality with minimal noise, which is particularly crucial in low-light conditions where noise can significantly degrade the visual fidelity.

Definition and Significance

The SNR is quantified in decibels (dB) and represents the ratio of the power of the signal to the power of the background noise. A higher SNR implies that the camera module is less susceptible to noise, resulting in clearer and more detailed images. This is especially important when capturing scenes with varying light intensities, as noise can manifest as grainy or snowy artifacts that obscure fine details.

Calculation of SNR

The SNR can be mathematically expressed as:

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