Noise Model Analysis on Image Sensor Arrays
Gwanggil Jeon · International Journal of Multimedia and Ubiquitous Engineering · 2015
This paper presents a new noise model and its application to Bayer color filter array (CFA).We investigate the effect of various noise models.In addition, we study three possible Bayer patterns.For example, current Bayer CFA utilizes RGGB pattern.However, one may consider other color combinations such as RRGB or RGBB patterns.To prove RGGB pattern's superiority, we investigate each pattern in various noise model and noise level.We also studied the method how to generate noisy image from noisy free image.Traditional noise models do not take into account white balance, gamma and tone correction issues.Simulation results indicate that the new noise model is more reasonable than the conventional models.