CCD or CMOS image sensors for consumer digital still photography?

Compared to CCD imagers, CMOS image sensors have some clear advantages: lower power, lower driving voltages, on-chip functionality, selective read-out and cost. Despite these advantages, CCDs still deliver a better image quality, especially for digital still applications. This paper tries to give an answer to the questions: "Why is the imaging performance of a CCD better? Will it remain that way? Can CMOS imagers also challenge CCDs in this application field ?".