A literal image was the secret message and a still image was the cover message.

以二值文字图像为待隐藏的秘密信息，以静止图像为隐秘载体。

youdao

Thus I want to make a gift to you of this Mysterious Secret Message.

因此，我想把这个神秘的信息作为礼物送给你。

youdao

Thus I want to make a gift to you of this Mysterious Secret Message.

因此，我想把这个神秘的信息作为礼物送给你。

youdao