Interpolation Detection

[maustinstar]

SuperRes intends to outperform Bilinear and Bicubic interpolation (aka "Digital Zoom"). However, these algorithmic forms of enhancement are usually "baked in" to many images that the app enhances.

Current Image Processing Chain:
Original Capture → Digital Zoom → SuperRes

Because SuperRes is meant to replace Bilinear and Bicubic interpolation, we want to apply SuperRes first.

Ideal Image Processing Chain:
Original Capture → SuperRes → Digital Zoom

However, because Digital Zoom is "baked in", we need a way to estimate the original image given a scaled photo. E.g. An algorithmic method of detecting an interpolation rate (digital scale factor)

Functional Image Processing Chain:
(Original Capture → Digital Zoom) → Approximate Original Capture → SuperRes → Digital Zoom