Based on the principle and design of a novel CMOS image sensor 4

Due to the presence of a certain color filter on each pixel, the remaining two color information need to be obtained through color difference. Gamma correction is used to eliminate nonlinear effects in signal transmission between electrical and optical devices.diode

From the above image processing process, it can be seen that many algorithms use difference values, which leads to image smoothing. In order to restore sharp images, aperture correction is required. In image processing, the sharpened edges obtained through edge detection are convolved with the smoothed image after the difference, resulting in a sharp image.diode

3 Conclusion

In order to improve the image quality of CMOS image sensors, this paper proposes a novel CMOS active pixel image sensor by analyzing the main noise sources and image distortions. This CMOS image sensor uses 4T active pixels, greatly improving the sensitivity of the image sensor. By integrating image preprocessing functions into sensors, it has achieved good results in improving the quality of images.diode