blind_watermark README

The project's README from github.com/guofei9987/blind_watermark. As one markdown file: README.md.

Blind watermark based on DWT-DCT-SVD.

Documentation: https://BlindWatermark.github.io/blind_watermark/#/en/
文档： https://BlindWatermark.github.io/blind_watermark/#/zh/
中文 readme README_cn.md
Source code: https://github.com/guofei9987/blind_watermark

install

pip install blind-watermark

For the current developer version:

git clone [email protected]:guofei9987/blind_watermark.git
cd blind_watermark
pip install .

How to use

Use in bash

# 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

Use in Python

Original Image + Watermark = Watermarked Image

origin_image + '@guofei9987 开源万岁！' = 打上水印的图

See the codes

Embed watermark:

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))

Extract watermark:

bwm1 = WaterMark(password_img=1, password_wm=1)
wm_extract = bwm1.extract('output/embedded.png', wm_shape=len_wm, mode='str')
print(wm_extract)

Output:

@guofei9987 开源万岁！

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！'

embed images

embed watermark:

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')

Extract watermark:

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

embed array of bits

See it here

As demo, we embed 6 bytes data:

wm = [True, False, True, True, True, False]

Embed:

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')

Extract:

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)

Notice that wm_shape (shape of watermark) is necessary

The output wm_extract is an array of float. set a threshold such as 0.5.

Concurrency

WaterMark(..., processes=None)

processes number of processes, can be integer. Default None, which means using all processes.

text_blind_watermark (Embed message into text): https://github.com/guofei9987/text_blind_watermark
HideInfo（hide as image, hide as sounds, hide as text）：https://github.com/guofei9987/HideInfo

Searching Database…

14.8K ·GitHub

Blind_watermark

这是什么？

这是一个用于图像盲水印（即不可见水印）的 Python 库：你可以把隐藏水印嵌入图像，之后无需原始的未加水印图像，也能将其提取出来。

这是库还是命令行工具？

它是一个 Python 库，也可以直接通过命令行调用，因此你既可以在 Python 代码中导入使用，也可以运行 bash 命令来嵌入和提取水印。

我怎样才能开始嵌入水印？

为你的 Python 环境安装该包，然后对图像和水印数据调用嵌入函数，之后再用对应的提取函数把水印取回。

除了 Python，还需要别的东西吗？

README 中没有列出除 Python 本身之外的其他依赖；你可以选择传入 processes 参数，使用多进程来加快嵌入速度。

水印在图像被编辑后还能保留吗？

演示显示，隐藏水印能经受 45 度旋转、随机裁剪、遮罩、垂直/水平方向的剪切、缩放、椒盐噪声以及亮度降低 10% 的处理，但其鲁棒性自然取决于失真的严重程度。

我可以嵌入哪些类型的数据作为水印？

你可以嵌入一段文本字符串、另一张图片，或一个原始比特数组作为水印载荷。

为什么提取时不需要原始图像？

该库的设计本身就属于“盲”水印方法，意味着无需与原图比对，就能直接从加了水印的图像中提取水印。

有没有用于其他媒体水印的相关项目？

同一作者还维护着 textblindwatermark，用于在文本中隐藏信息，以及 HideInfo，用于将数据隐藏在图像、声音或文本中。

What are similar projects?

noai-watermark, amazing-qr, pytube, caire, gallery-dl, primitive, blurhash, guetzli

Which topics is it in?

watermark, algorithm, image, python-library, image-processing, computer-vision, utility, command-line, command-line-tool, terminal, chinese, tool

Creator: guofei9987
Size: 3.9 MB
Stars: 14.8K
Updated: CommitSep 06 Release0.2.1Jan 11
Age: 7y
Commits · 90 Days