Adaptive Edge-Preserving Filter for CMOS Image Sensor Cross-Talk Compensation

This paper presents an adaptive edge-preserving filter (AEPF) to remove the pixel cross-talk phenomenon of CMOS image sensor. As is widely known, the pixel crosstalk is due to the optical, electrical and architectural interferences and leads to the blocky formation after color interpolation. Although the conventional algorithms can eliminate the blocky formation, the edge false colors are also induced to degrade the image quality accordingly. Therefore, the AEPF is proposed to eliminate the blocky formation and to prevent the generation of edge false colors. Experimental results revealed that the AEPF can effectively remove the pixel cross-talk effect and result in good image quality without blocky formation and edge false colors