main
黄海 11 months ago
parent 8bc074970f
commit 834469c6bb

@ -0,0 +1,85 @@
from PIL import Image
def makeImageEven(image):
"""
将图像像素值变为偶数值最低有效位为0
"""
# 获取图像所有像素值的列表:[(r,g,b,t),(r,g,b,t)...]
pixels = list(image.getdata())
# 将所有像素值变为偶数(通过移位)
evenPixels = [(r >> 1 << 1, g >> 1 << 1, b >> 1 << 1, t >> 1 << 1) for [r, g, b, t] in pixels]
# 创建一个与原图像大小相同的副本
evenImage = Image.new(image.mode, image.size)
# 将偶数像素值放入副本中
evenImage.putdata(evenPixels)
return evenImage
def constLenBin(int):
"""
返回固定长度的二进制字符串替代内置函数bin()
"""
# 使用二进制表示整数不足8位在左侧补0
binary = "0" * (8 - (len(bin(int)) - 2)) + bin(int).replace('0b', '')
return binary
def encodeDataInImage(image, data):
"""
将字符串编码到图片中
"""
# 获取最低有效位为0的图片副本
evenImage = makeImageEven(image)
# 将需要隐藏的字符串转换成二进制字符串
binary = ''.join(map(constLenBin, bytearray(data, 'utf-8')))
if len(binary) > len(image.getdata()) * 4:
# 若无法编码全部数据,抛出异常
raise Exception("Error: Can't encode more than" + len(evenImage.getdata()) * 4 + " bits in this image. ")
# 将二进制信息编码进像素值中
encodedPixels = [(r + int(binary[index * 4 + 0]), g + int(binary[index * 4 + 1]), b + int(binary[index * 4 + 2]),
t + int(binary[index * 4 + 3])) if index * 4 < len(binary) else (r, g, b, t) for
index, (r, g, b, t) in enumerate(list(evenImage.getdata()))]
# 创建新图片以存放编码后的像素
encodedImage = Image.new(evenImage.mode, evenImage.size)
# 添加编码后的数据
encodedImage.putdata(encodedPixels)
return encodedImage
def binaryToString(binary):
"""
从二进制字符串转为 UTF-8 字符串
"""
index = 0
string = []
rec = lambda x, i: x[2:8] + (rec(x[8:], i - 1) if i > 1 else '') if x else ''
fun = lambda x, i: x[i + 1:8] + rec(x[8:], i - 1)
while index + 1 < len(binary):
chartype = binary[index:].index('0') # 存放字符所占字节数一个字节的字符会存为0
length = chartype * 8 if chartype else 8
string.append(chr(int(fun(binary[index:index + length], chartype), 2)))
index += length
return ''.join(string)
def decodeImage(image):
"""
解码隐藏数据
"""
pixels = list(image.getdata()) # 获取像素列表
# 提取图片中所有最低有效位中的数据
binary = ''.join([str(int(r >> 1 << 1 != r)) + str(int(g >> 1 << 1 != g)) + str(int(b >> 1 << 1 != b)) + str(
int(t >> 1 << 1 != t)) for (r, g, b, t) in pixels])
# 找到数据截止处的索引
locationDoubleNull = binary.find('0000000000000000')
endIndex = locationDoubleNull + (
8 - (locationDoubleNull % 8)) if locationDoubleNull % 8 != 0 else locationDoubleNull
data = binaryToString(binary[0:endIndex])
return data
# 调用函数对图片进行数据编码并保存
#encodeDataInImage(Image.open("d:/9.png"), 'https://www.hzkjai.com 吉林绘智科技有限公司').save('d:/9.png')
# 解码图片中隐藏的数据并打印
#print(decodeImage(Image.open("d:/9.png")))

@ -9,7 +9,7 @@ from Util.CommonUtil import *
from Util.OssUtil import uploadOss
from Util.PngUtil import *
from PIL import Image, ImageDraw, ImageFont
from Util.WriteYinCangWenZi import *
def WriteWenZi(image_path):
# 打开图片
@ -36,6 +36,9 @@ def upload_img_file(file_path, model_id):
png_file = os.path.basename(file_path)
# 添加水印信息
WriteWenZi(file_path)
# 添加隐藏信息
# 调用函数对图片进行数据编码并保存
encodeDataInImage(Image.open(file_path), 'https://www.hzkjai.com 吉林绘智科技有限公司').save(file_path)
# 清除Exif信息
clearExif(file_path, file_path) # 清除Exif信息
# 上传到OSS

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