End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
javacpp-opencv图像处理之2:实时视频添加图片水印,实现不同大小图片叠加,图像透明度控制,文字和图片双水印 https://codingnote.cc/zh-my/p/20319/