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Lecture 23: Image Sensors (68)
RCD-Y

This doesnt cause pixel crosstalk because light of all wavelengths are split in two & arrived at neighboring pixels.

SainanChen

Can anyone explain why splitting one ray over 2*2 pixels can reduce aliasing effect?

Leon-Shao

@SainanChen I don't know if I'm correct but in the upper picture of Birefringence, this fact is applied to small pixels that let neighboring pixels' rays blend with each other to create a smoother picture, thus reducing alias.

yuhany1024

Following up of RCD-Y's comment, cross talk only happens when the photon falls into a wrong color channel.

pixelled

The function of birefringent layer is similar to the idea of supersampling. Splitting each ray over neighbouring pixels works like a blurring filter before sampling, which is exactly how we reduce alisasing effect.

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