# blind-watermark
Blind watermark based on dct and svd.
[](https://pypi.org/project/blind_watermark/)
[](https://travis-ci.com/guofei9987/blind_watermark)
[](https://codecov.io/gh/guofei9987/blind_watermark)
[](https://github.com/guofei9987/blind_watermark/blob/master/LICENSE)
[](https://github.com/guofei9987/blind_watermark/)
[](https://github.com/guofei9987/blind_watermark/fork)
[](https://pepy.tech/project/blind-watermark)
[](https://github.com/guofei9987/blind_watermark/discussions)
- **Documentation:** [https://BlindWatermark.github.io/blind_watermark/#/en/](https://BlindWatermark.github.io/blind_watermark/#/en/)
- **文档：** [https://BlindWatermark.github.io/blind_watermark/#/zh/](https://BlindWatermark.github.io/blind_watermark/#/zh/)
- **中文 readme** [README_cn.md](README_cn.md)
- **Source code:** [https://github.com/guofei9987/blind_watermark](https://github.com/guofei9987/blind_watermark)
# install
```bash
pip install blind-watermark
```
For the current developer version:
```bach
git clone git@github.com:guofei9987/blind_watermark.git
cd blind_watermark
pip install .
```
# How to use
### Use in bash
```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
 + '@guofei9987 开源万岁！' = 
See the [codes](/examples/example_str.py)
Embed watermark:
```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))
```
Extract watermark:
```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)
```
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！'|
|50% Horizontal cut||'@guofei9987 开源万岁！'|
|50% Vertical cut||'@guofei9987 开源万岁！'|
|Resize 0.5||'@guofei9987 开源万岁！'|
|Pepper Noise||'@guofei9987 开源万岁！'|
|Brightness 10% Down||'@guofei9987 开源万岁！'|
### embed images
embed watermark:
```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')
```
Extract watermark:
```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|  ||
### embed array of bits
See it [here](/examples/example_bit.py)
As demo, we embed 6 bytes data:
```python
wm = [True, False, True, True, True, False]
```
Embed:
```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')
```
Extract:
```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)
```
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
```python
WaterMark(..., processes=None)
```
- `processes`: number of processes, can be integer. Default `None`, meaning use all processes.
## Related Project
text_blind_watermark: [https://github.com/guofei9987/text_blind_watermark](https://github.com/guofei9987/text_blind_watermark)
Embed message into text.
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"description": "\n# blind-watermark\n\nBlind watermark based on dct and svd.\n\n\n[](https://pypi.org/project/blind_watermark/)\n[](https://travis-ci.com/guofei9987/blind_watermark)\n[](https://codecov.io/gh/guofei9987/blind_watermark)\n[](https://github.com/guofei9987/blind_watermark/blob/master/LICENSE)\n\n\n[](https://github.com/guofei9987/blind_watermark/)\n[](https://github.com/guofei9987/blind_watermark/fork)\n[](https://pepy.tech/project/blind-watermark)\n[](https://github.com/guofei9987/blind_watermark/discussions)\n\n\n- **Documentation:** [https://BlindWatermark.github.io/blind_watermark/#/en/](https://BlindWatermark.github.io/blind_watermark/#/en/)\n- **\u6587\u6863\uff1a** [https://BlindWatermark.github.io/blind_watermark/#/zh/](https://BlindWatermark.github.io/blind_watermark/#/zh/) \n- **\u4e2d\u6587 readme** [README_cn.md](README_cn.md)\n- **Source code:** [https://github.com/guofei9987/blind_watermark](https://github.com/guofei9987/blind_watermark)\n\n\n\n# install\n```bash\npip install blind-watermark\n```\n\nFor the current developer version:\n```bach\ngit clone git@github.com:guofei9987/blind_watermark.git\ncd blind_watermark\npip install .\n```\n\n# How to use\n\n\n### Use in bash\n\n\n```bash\n# embed watermark into image:\nblind_watermark --embed --pwd 1234 examples/pic/ori_img.jpeg \"watermark text\" examples/output/embedded.png\n# extract watermark from image:\nblind_watermark --extract --pwd 1234 --wm_shape 111 examples/output/embedded.png\n```\n\n\n\n## Use in Python\n\nOriginal Image + Watermark = Watermarked Image\n\n + '@guofei9987 \u5f00\u6e90\u4e07\u5c81\uff01' = \n\n\nSee the [codes](/examples/example_str.py)\n\nEmbed watermark:\n```python\nfrom blind_watermark import WaterMark\n\nbwm1 = WaterMark(password_img=1, password_wm=1)\nbwm1.read_img('pic/ori_img.jpg')\nwm = '@guofei9987 \u5f00\u6e90\u4e07\u5c81\uff01'\nbwm1.read_wm(wm, mode='str')\nbwm1.embed('output/embedded.png')\nlen_wm = len(bwm1.wm_bit)\nprint('Put down the length of wm_bit {len_wm}'.format(len_wm=len_wm))\n```\n\nExtract watermark:\n```python\nbwm1 = WaterMark(password_img=1, password_wm=1)\nwm_extract = bwm1.extract('output/embedded.png', wm_shape=len_wm, mode='str')\nprint(wm_extract)\n```\nOutput:\n>@guofei9987 \u5f00\u6e90\u4e07\u5c81\uff01\n\n### attacks on Watermarked Image\n\n\n|attack method|image after attack|extracted watermark|\n|--|--|--|\n|Rotate 45 Degrees||'@guofei9987 \u5f00\u6e90\u4e07\u5c81\uff01'|\n|Random crop||'@guofei9987 \u5f00\u6e90\u4e07\u5c81\uff01'|\n|Masks|  |'@guofei9987 \u5f00\u6e90\u4e07\u5c81\uff01'|\n|50% Horizontal cut||'@guofei9987 \u5f00\u6e90\u4e07\u5c81\uff01'|\n|50% Vertical cut||'@guofei9987 \u5f00\u6e90\u4e07\u5c81\uff01'|\n|Resize 0.5||'@guofei9987 \u5f00\u6e90\u4e07\u5c81\uff01'|\n|Pepper Noise||'@guofei9987 \u5f00\u6e90\u4e07\u5c81\uff01'|\n|Brightness 10% Down||'@guofei9987 \u5f00\u6e90\u4e07\u5c81\uff01'|\n\n\n\n\n\n\n### embed images\n\nembed watermark:\n```python\nfrom blind_watermark import WaterMark\n\nbwm1 = WaterMark(password_wm=1, password_img=1)\n# read original image\nbwm1.read_img('pic/ori_img.jpg')\n# read watermark\nbwm1.read_wm('pic/watermark.png')\n# embed\nbwm1.embed('output/embedded.png')\n```\n\n\nExtract watermark:\n```python\nbwm1 = WaterMark(password_wm=1, password_img=1)\n# notice that wm_shape is necessary\nbwm1.extract(filename='output/embedded.png', wm_shape=(128, 128), out_wm_name='output/extracted.png', )\n```\n\n\n|attack method|image after attack|extracted watermark|\n|--|--|--|\n|Rotate 45 Degrees|||\n|Random crop|||\n|Mask|  ||\n\n\n### embed array of bits\n\nSee it [here](/examples/example_bit.py)\n\n\nAs demo, we embed 6 bytes data:\n```python\nwm = [True, False, True, True, True, False]\n```\n\nEmbed:\n```python\nfrom blind_watermark import WaterMark\n\nbwm1 = WaterMark(password_img=1, password_wm=1)\nbwm1.read_ori_img('pic/ori_img.jpg')\nbwm1.read_wm([True, False, True, True, True, False], mode='bit')\nbwm1.embed('output/embedded.png')\n```\n\nExtract:\n```python\nbwm1 = WaterMark(password_img=1, password_wm=1, wm_shape=6)\nwm_extract = bwm1.extract('output/\u6253\u4e0a\u6c34\u5370\u7684\u56fe.png', mode='bit')\nprint(wm_extract)\n```\nNotice that `wm_shape` (shape of watermark) is necessary\n\nThe output `wm_extract` is an array of float. set a threshold such as 0.5.\n\n\n# Concurrency\n\n```python\nWaterMark(..., processes=None)\n```\n- `processes`: number of processes, can be integer. Default `None`, meaning use all processes. \n\n## Related Project\n\ntext_blind_watermark: [https://github.com/guofei9987/text_blind_watermark](https://github.com/guofei9987/text_blind_watermark) \nEmbed message into text.\n\n\n",
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