文章目录
一、关于 blind-watermark
Blind watermark 基于 DWT-DCT-SVD.
- github : https://github.com/guofei9987/blind_watermark
- Documentation: https://blindwatermark.github.io/blind_watermark/#/en/
- 文档： https://blindwatermark.github.io/blind_watermark/#/zh/
- Source code: https://github.com/guofei9987/blind_watermark
- Discussions : https://github.com/guofei9987/blind_watermark/discussions
安装
shell
pip install blind-watermark源码安装当前开发版本
shell
git clone git@github.com:guofei9987/blind_watermark.git
cd blind_watermark
pip install .二、bash 中使用
shell
# embed watermark into image:
blind_watermark --embed --pwd 1234 examples/pic/ori_img.jpeg "watermark text" examples/output/embedded.png
# extract watermark from image:
blind_watermark --extract --pwd 1234 --wm_shape 111 examples/output/embedded.png三、Python 调用
1、基本使用
Original Image + Watermark = Watermarked Image
+ '@guofei9987 开源万岁！' = 
See the codes
嵌入水印：
python
from blind_watermark import WaterMark
bwm1 = WaterMark(password_img=1, password_wm=1)
bwm1.read_img('pic/ori_img.jpg')
wm = '@guofei9987 开源万岁！'
bwm1.read_wm(wm, mode='str')
bwm1.embed('output/embedded.png')
len_wm = len(bwm1.wm_bit)
print('Put down the length of wm_bit {len_wm}'.format(len_wm=len_wm))提取水印：
python
bwm1 = WaterMark(password_img=1, password_wm=1)
wm_extract = bwm1.extract('output/embedded.png', wm_shape=len_wm, mode='str')
print(wm_extract)输出：
@guofei9987 开源万岁！
2、attacks on Watermarked Image
| attack method | image after attack | extracted watermark |
|---|---|---|
| Rotate 45 Degrees |  |
'@guofei9987 开源万岁！' |
| Random crop |  |
'@guofei9987 开源万岁！' |
| Masks |  |
'@guofei9987 开源万岁！' |
| Vertical cut |  |
'@guofei9987 开源万岁！' |
| Horizontal cut |  |
'@guofei9987 开源万岁！' |
| Resize |  |
'@guofei9987 开源万岁！' |
| Pepper Noise |  |
'@guofei9987 开源万岁！' |
| Brightness 10% Down |  |
'@guofei9987 开源万岁！' |
3、embed images
嵌入水印：
python
from blind_watermark import WaterMark
bwm1 = WaterMark(password_wm=1, password_img=1)
# read original image
bwm1.read_img('pic/ori_img.jpg')
# read watermark
bwm1.read_wm('pic/watermark.png')
# embed
bwm1.embed('output/embedded.png')提取水印：
python
bwm1 = WaterMark(password_wm=1, password_img=1)
# notice that wm_shape is necessary
bwm1.extract(filename='output/embedded.png', wm_shape=(128, 128), out_wm_name='output/extracted.png', )| attack method | image after attack | extracted watermark |
|---|---|---|
| Rotate 45 Degrees | [ |
 |
| Random crop |  |
 |
| Mask |  |
|
4、embed array of bits
See it here
作为 demo，我们嵌入 6 bytes 数据：
python
wm = [True, False, True, True, True, False]嵌入：
python
from blind_watermark import WaterMark
bwm1 = WaterMark(password_img=1, password_wm=1)
bwm1.read_ori_img('pic/ori_img.jpg')
bwm1.read_wm([True, False, True, True, True, False], mode='bit')
bwm1.embed('output/embedded.png')提取：
python
bwm1 = WaterMark(password_img=1, password_wm=1, wm_shape=6)
wm_extract = bwm1.extract('output/打上水印的图.png', mode='bit')
print(wm_extract)请注意，wm_shape（水印的形状）是必需的
输出 wm_extract 是一个浮点数组。设置阈值，例如0.5。
四、并发
WaterMark(..., processes=None)
processes进程数可以是整数。默认为None，这意味着使用所有进程。
五、相关 Project
- text_blind_watermark (将消息嵌入文本): https://github.com/guofei9987/text_blind_watermark
- HideInfo（隐藏为图像、隐藏为声音、隐藏为文本）：https://github.com/guofei9987/HideInfo