You look at a region of the image. If all the pixels are roughly the same color (below some threshold), you store the average color for the whole region as a single value. If the pixels vary too much, you split the region into four quadrants and try again.
If you’re into wide-format instant cameras but don’t want to spend $409.95 — or prefer a more traditional analog experience — the $175.95 Instax Wide 400 is a solid pick. The basic point-and-shoot produces similar stills to the Wide Evo, and in some ways, it’s easier to use, thanks to its stripped-down feature set. That simplicity, however, comes at the cost of customization, making it harder to capture the perfect shot. It also swaps an LCD display for a large viewfinder and is noticeably heavier than the Instax Mini Evo. Nonetheless, if you’re after wide prints at a more affordable price, it’s a worthwhile option.
，这一点在体育直播中也有详细论述
Horvath blames educational technology (edtech) for these atrophying skill sets, arguing that at the turn of the 21th century and through its first decade and a half, tech companies and advocates pushed a false narrative that the education system was broken, but computers could fix it. Instead, Horvath said, the plan backfired.
但是“我们现在还没收到官方通知，也不敢乱猜”。