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How did they create the watermarked image without the watermark being visible to users? What kind of a filter or blending mode are they applying so that it can
by Jerry2 8y ago
How did they create the watermarked image without the watermark being visible to users? What kind of a filter or blending mode are they applying so that it can only be detected with edge detection? Anyone know?
- Dylan16807 8y agoSee this post https://news.ycombinator.com/item?id=18649805 https://news.ycombinator.com/item?id=18649805 It's a low-alpha checkerboard, and it's actually quite visible.