Cannot extract string from jpg correctly about blind_watermark

[Syize]

Test Picture

[Syize]

The original picture is 586 KB, but output is 280 KB

[sdsy888]

@guofei9987 same problem here, could you provide some insight for it?

[guofei9987]

It works well in my tests (using your image and string)

from blind_watermark import WaterMark

bwm1 = WaterMark(password_img=1, password_wm=1)
bwm1.read_img('pic/ori.jpg')
wm = 'Just a test - by Syize'
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))

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

assert wm == wm_extract, '提取水印和原水印不一致'

Outputs:

Just a test - by Syize