Raw decoding is not as simple as you might think.
It’s the best place to add “signature steps.” Things like noise reduction, chromatic aberration correction, and one-step HDR processing.
I used to work for a camera manufacturer, and our Raw decoder was an extremely intense pipeline step. It was treated as one of the biggest secrets in the company.
Third-party deinterlacers could not exactly match ours, although they could get very good results.
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