The embedding strength is decided by the just noticeable difference of the image, and the cover image is not needed during the extraction of watermark.

水印的嵌入强度由图像的视觉临界差异决定，水印的提取不需要载体图像。

youdao

Without the protection of sunscreen, just a few minutes of daily sun exposure over the years can cause noticeable changes in how skin looks and feels, according to the American Academy of Dermatology.

根据美国皮肤学会的说法，没有防晒霜的保护，哪怕每天只有几分钟暴露在阳光下，经过一些年，皮肤的样子和感觉也会发生显著变化。

youdao

No debates (Ok, a few, but not like before), just Numbers... Since making the switch, we have witnessed noticeable improvement in the productivity of the [prioritization] meetings.

无需争论(好吧，就算有一些，但之前似乎不会)，只要看数字……由于做了这个改变，我们已经见证了优先排序会议为生产力带来的显著提升。

youdao

And about the products... the difference in resolution is more than just mildly noticeable.

ENGADGET: Formlabs FORM 1 high-resolution 3D printer spotted in the wild, we go eyes on (video)

The flames at that point were barely noticeable, just tiny tongues lapping at the flammable material.

NPR: No Alarm, Only 1 Exit In Brazil Nightclub Fire

The region where these differences first become noticeable lies just south of a chain of mountains called the Vindhya.

CNN: Center Cut