According to Wikipedia, imaging science is a multidisciplinary field concerned with the generation, collection, duplication, analysis, modification, and visualization of images. As an evolving field it includes research and researchers from physics, mathematics, electrical engineering, computer vision, computer science, and perceptual psychology. ImageScience has a comprehensive start page.
Image sensors world - news and discussions about image sensors in a blog format.
DxO camera sensor - an excellent artilce by Peter van den Hamer explaining DxO marks. Peter also includes great explanations for how noise is generated and the relationship to different sensor sizes.
Bayer filter - Wikipedia.
Demosaicing - Wikipedia.
How do we see colour? - Jeremy Nathans reviews the history of visual anatomy and the theory/biology of colour vision.
Camera vs eye - the differences between how a camera and a human eye perceives a scene.