Field Blending

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Introduction

Blending is bad.


The field blending process

1. A single interlaced frame. It has two distinct fields, which I will call field A and field B, happening a split second apart.
Fieldblending ABi.png
2. The fields have been split. Field A has the even-numbered lines, while field B has the odd-numbered lines.

Fieldblending A1.png Fieldblending B1.png
3. The actual vertical height of field A and B. Nothing necessarily bad has happened yet...

Fieldblending A2.png Fieldblending B2.png
4. Problem number one! The fields are resized to the original height. Vertical detail is lost.

Fieldblending A3.png Fieldblending B3.png
5. The final stage. Field A and B are blended together at different opacities. The result is a "ghosting" effect.

Fieldblending ABfb.png
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