Lecture 21: Image Sensors (59)
rcorona

I was a little confused here as to what is going on in this slide.

In my understanding, an error-free image would be more vibrant in colors, and the cross-talk is causing the resulting image to look more washed out?

If so, I'm wondering why that is? Is it because cross-talk causes higher variance in the collected pixel value samples, which drives the average sample to something more grey/desaturated?

Mehvix

Cross-talk is additive noise; it arises from light passing through a specific filter (i.e. red), but then hitting a different sensor (i.e. green or blue).

This increases the amount of overall light being sampled/processed, raising the values of pixels making the display brighter

Mehvix

^adding on: I suppose it's not just that the average pixel value increases. At a pixel level, the relative difference between the Red/Green/Blue components of colors decreases. This distorts colors into appearing more washed out, as they are become closer to some "average" color value

You must be enrolled in the course to comment