Πως ακριβώς λειτουργεί το Deep Fusion και η διαφορά από το Smart HDR:
But in the background, Deep Fusion is doing quite a lot of work and operating much differently than Smart HDR. Here’s the basic breakdown:
By the time you press the shutter button, the camera has already grabbed four frames at a fast shutter speed to freeze motion in the shot and four standard frames. When you press the shutter it grabs one longer-exposure shot to capture detail.
Those three regular shots and long-exposure shot are merged into what Apple calls a “synthetic long.” This is a major difference from Smart HDR.
Deep Fusion picks the short-exposure image with the most detail and merges it with the synthetic long exposure. Unlike Smart HDR, Deep Fusion merges these two frames, not more — although the synthetic long is already made of four previously-merged frames. All the component frames are also processed for noise differently than Smart HDR, in a way that’s better for Deep Fusion.
The images are run through four detail processing steps, pixel by pixel, each tailored to increasing amounts of detail — the sky and walls are in the lowest band, while skin, hair, fabrics, and so on are the highest level. This generates a series of weightings for how to blend the two images — taking detail from one and tone, color, and luminance from the other.
The final image is generated.
https://www.theverge.com/2019/10/1/...ion-camera-mode-iphone-11-pro-max-ios-13-beta
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