Python教程
Python实战项目：为人脸照片添加口罩
本文主要是介绍Python实战项目：为人脸照片添加口罩，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！
前言
好想玩点不一样的，感觉平常的已经不能吸引大家了。想了又想，我今天给大家分享如何给人像添加口罩吧。毕竟最近疫情那么
严重，也只能玩玩这个了，大家千万别乱跑啊。
效果展示
数据集展示
数据集来源：使用了开源数据集FaceMask_CelebA
github地址：https://github.com/sevenHsu/FaceMask_CelebA.git
部分人脸数据集：
口罩样本数据集：
为人脸照片添加口罩代码
这部分有个库face_recognition需要安装，如果之前没有用过的小伙伴可能得费点功夫。
Face Recognition 库主要封装了dlib这一 C++ 图形库，通过 Python 语言将它封装为一个非常简单就可以实现人脸识别的 API
库，屏蔽了人脸识别的算法细节，大大降低了人脸识别功能的开发难度。
Python学习交流Q群：906715085###
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Author : 2014Vee
import os
import numpy as np
from PIL import Image, ImageFile
__version__ = '0.3.0'
IMAGE_DIR = os.path.dirname
('E:/play/FaceMask_CelebA-master/facemask_image/')
WHITE_IMAGE_PATH = os.path.join
(IMAGE_DIR, 'front_14.png')
BLUE_IMAGE_PATH = os.path.join(IMAGE_DIR,
'front_14.png')
SAVE_PATH = os.path.dirname
('E:/play/FaceMask_CelebA-
master/save/synthesis/')
SAVE_PATH2 = os.path.dirname
('E:/play/FaceMask_CelebA-
master/save/masks/')
class FaceMasker:
KEY_FACIAL_FEATURES = ('nose_bridge',
'chin')
def __init__(self, face_path,
mask_path, white_mask_path, save_path,
save_path2, model='hog'):
self.face_path = face_path
self.mask_path = mask_path
self.save_path = save_path
self.save_path2 = save_path2
self.white_mask_path =
white_mask_path
self.model = model
self._face_img: ImageFile = None
self._black_face_img = None
self._mask_img: ImageFile = None
self._white_mask_img = None
def mask(self):
import face_recognition
face_image_np =
face_recognition.load_image_file
(self.face_path)
face_locations =
face_recognition.face_locations
(face_image_np, model=self.model)
face_landmarks =
face_recognition.face_landmarks
(face_image_np, face_locations)
self._face_img = Image.fromarray
(face_image_np)
self._mask_img = Image.open
(self.mask_path)
self._white_mask_img = Image.open
(self.white_mask_path)
self._black_face_img = Image.new
('RGB', self._face_img.size, 0)
found_face = False
for face_landmark in face_landmarks:
# check whether facial features meet requirement
skip = False
for facial_feature in self.KEY_FACIAL_FEATURES:
if facial_feature not in face_landmark:
skip = True
break
if skip:
continue
# mask face
found_face = True
self._mask_face(face_landmark)
if found_face:
# save
self._save()
else:
print('Found no face.')
def _mask_face(self, face_landmark: dict):
nose_bridge = face_landmark['nose_bridge']
nose_point = nose_bridge[len(nose_bridge) * 1 // 4]
nose_v = np.array(nose_point)
chin = face_landmark['chin']
chin_len = len(chin)
chin_bottom_point = chin[chin_len // 2]
chin_bottom_v = np.array(chin_bottom_point)
chin_left_point = chin[chin_len // 8]
chin_right_point = chin[chin_len * 7 // 8]
# split mask and resize
width = self._mask_img.width
height = self._mask_img.height
width_ratio = 1.2
new_height = int(np.linalg.norm(nose_v - chin_bottom_v))
# left
mask_left_img = self._mask_img.crop((0, 0, width // 2, height))
mask_left_width = self.get_distance_from_point_to_line(chin_left_point, nose_point, chin_bottom_point)
mask_left_width = int(mask_left_width * width_ratio)
mask_left_img = mask_left_img.resize((mask_left_width, new_height))
# right
mask_right_img = self._mask_img.crop((width // 2, 0, width, height))
mask_right_width = self.get_distance_from_point_to_line(chin_right_point, nose_point, chin_bottom_point) mask_right_width = int(mask_right_width * width_ratio)
mask_right_img = mask_right_img.resize((mask_right_width, new_height))
# merge mask
size = (mask_left_img.width + mask_right_img.width, new_height)
mask_img = Image.new('RGBA', size)
mask_img.paste(mask_left_img, (0, 0), mask_left_img)
mask_img.paste(mask_right_img, (mask_left_img.width, 0), mask_right_img)
# rotate mask
angle = np.arctan2(chin_bottom_point[1] - nose_point[1], chin_bottom_point[0] - nose_point[0])
rotated_mask_img = mask_img.rotate(angle, expand=True)
# calculate mask location
center_x = (nose_point[0] + chin_bottom_point[0]) // 2
center_y = (nose_point[1] + chin_bottom_point[1]) // 2
offset = mask_img.width // 2 - mask_left_img.width
radian = angle * np.pi / 180
box_x = center_x + int(offset * np.cos(radian)) - rotated_mask_img.width // 2
box_y = center_y + int(offset * np.sin(radian)) - rotated_mask_img.height // 2
# add mask
self._face_img.paste(mask_img, (box_x, box_y), mask_img)
# split mask and resize
width = self._white_mask_img.width
height = self._white_mask_img.height
width_ratio = 1.2
new_height = int(np.linalg.norm(nose_v - chin_bottom_v))
# left
mask_left_img = self._white_mask_img.crop((0, 0, width // 2, height))
mask_left_width = self.get_distance_from_point_to_line
(chin_left_point, nose_point, chin_bottom_point)
mask_left_width = int(mask_left_width * width_ratio)
mask_left_img = mask_left_img.resize((mask_left_width, new_height))
# right
mask_right_img = self._white_mask_img.crop((width // 2, 0, width, height))
mask_right_width = self.get_distance_from_point_to_line(chin_right_point, nose_point, chin_bottom_point) mask_right_width = int(mask_right_width * width_ratio)
mask_right_img = mask_right_img.resize((mask_right_width, new_height))
# merge mask
size = (mask_left_img.width + mask_right_img.width, new_height)
mask_img = Image.new('RGBA', size)
mask_img.paste(mask_left_img, (0, 0), mask_left_img)
mask_img.paste(mask_right_img, (mask_left_img.width, 0), mask_right_img)
# rotate mask
angle = np.arctan2(chin_bottom_point[1] - nose_point[1], chin_bottom_point[0] - nose_point[0])
rotated_mask_img = mask_img.rotate(angle, expand=True)
# calculate mask location
center_x = (nose_point[0] + chin_bottom_point[0]) // 2
center_y = (nose_point[1] + chin_bottom_point[1]) // 2
offset = mask_img.width // 2 - mask_left_img.width
radian = angle * np.pi / 180
box_x = center_x + int(offset * np.cos(radian)) - rotated_mask_img.width // 2
box_y = center_y + int(offset * np.sin(radian)) - rotated_mask_img.height // 2
# add mask
self._black_face_img.paste(mask_img, (box_x, box_y), mask_img)
def _save(self):
path_splits = os.path.splitext(self.face_path)
# new_face_path = self.save_path + '/' + os.path.basename(self.face_path) + '-with-mask' + path_splits[1]
# new_face_path2 = self.save_path2 + '/' + os.path.basename(self.face_path) + '-binary' + path_splits[1]
new_face_path = self.save_path + '/' + os.path.basename(self.face_path) + '-with-mask' + path_splits[1]
new_face_path2 = self.save_path2 + '/' + os.path.basename(self.face_path) + '-binary' + path_splits[1] self._face_img.save(new_face_path)
self._black_face_img.save(new_face_path2)
# print(f'Save to {new_face_path}')
@staticmethod def get_distance_from_point_to_line(point, line_point1, line_point2):
distance = np.abs((line_point2[1] - line_point1[1]) * point[0] +
(line_point1[0] - line_point2[0]) * point[1] +
(line_point2[0] - line_point1[0]) * line_point1[1] +
(line_point1[1] - line_point2[1]) * line_point1[0]) / \
np.sqrt((line_point2[1] - line_point1[1]) * (line_point2[1] - line_point1[1]) +
(line_point1[0] - line_point2[0]) *
(line_point1[0] - line_point2[0]))
return int(distance)
# FaceMasker("/home/aistudio/data/人脸.png", WHITE_IMAGE_PATH, True, 'hog').mask()
from pathlib import Path
images = Path("E:/play/FaceMask_CelebA-master/bbox_align_celeba").glob("*")cnt = 0for image in images:
if cnt < 1:
cnt += 1
continue
FaceMasker(image, BLUE_IMAGE_PATH, WHITE_IMAGE_PATH, SAVE_PATH, SAVE_PATH2, 'hog').
mask()
cnt += 1
print(f"正在处理第{cnt}张图片，还有{99 - cnt}张图片")
掩膜生成代码
这部分其实就是对使用的口罩样本的二值化，因为后续要相关模型会用到
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import os
from PIL import Image
# 源目录
# MyPath = 'E:/play/FaceMask_CelebA
-master/facemask_image/'
MyPath = 'E:/play/FaceMask_CelebA-
master/save/masks/'
# 输出目录
OutPath = 'E:/play/FaceMask_CelebA-
master/save/Binarization/'
def processImage(filesoure, destsoure,
name, imgtype):
'''
filesoure是存放待转换图片的目录
destsoure是存在输出转换后图片的目录
name是文件名
imgtype是文件类型
'''
imgtype = 'bmp' if imgtype == '.bmp'
else 'png'
# 打开图片
im = Image.open(filesoure + name)
# ============================================================================= #
#缩放比例
# rate =max(im.size[0]/640.0 if
im.size[0] > 60 else 0, im.size[1]/1136.0
if im.size[1] > 1136 else 0)
# if rate:
# im.thumbnail((im.size[0]/rate, im.size[1]/rate))
# =============================================================================
img = im.convert("RGBA")
pixdata = img.load()
# 二值化
for y in range(img.size[1]):
for x in range(img.size[0]):
if pixdata[x, y][0] < 90:
pixdata[x, y] = (0, 0, 0, 255)
for y in range(img.size[1]):
for x in range(img.size[0]):
if pixdata[x, y][1] < 136:
pixdata[x, y] = (0, 0, 0, 255)
for y in range(img.size[1]):
for x in range(img.size[0]):
if pixdata[x, y][2] > 0:
pixdata[x, y] = (255, 255, 255, 255)
img.save(destsoure + name, imgtype)
def run():
# 切换到源目录，遍历源目录下所有图片
os.chdir(MyPath)
for i in os.listdir(os.getcwd()):
# 检查后缀
postfix = os.path.splitext(i)[1]
name = os.path.splitext(i)[0]
name2 = name.split('.')
if name2[1] == 'jpg-binary' or name2[1] == 'png-binary':
processImage(MyPath, OutPath, i, postfix)
if __name__ == '__main__':
run()
最后
今天又到周末了，祝大家周末愉快，玩够了记得回来学习鸭！下一章见啦~~~
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