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Lecture 16: Light Field Cameras (11)
jenzou

It's interesting how the vertical lines are slightly curved. From lecture, each pixel (sensor position) is represented by a fixed position $x$ over all positions $u$ in the Cartesian ray space. Each pixel is the integration along the vertical line. Could the curves be due to the curvature or imperfection of the lens, which affects position of $u$?

ellenluo

I'm confused about what x and u represent in this chart. I'm also interested in why the line is curved.

hershg

Could the curvature have something to do with the actual hardware limitations/how the sensor refreshes and captures data at each pixel (or the 4D analog for this case)? kinda similar to the 'rolling' effect from camera captures we saw a few lectures ago?

hershg

From a slide at the end in the extras section, it appears that curves are due to lens aberrations

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