互联网加竞赛 基于YOLO实现的口罩佩戴检测 - python opemcv 深度学习
文章目录
- 0 前言
- 1 课题介绍
- 2 算法原理
-
- 2.1 算法简介
- 2.2 网络架构
- 3 关键代码
- 4 数据集
-
- 4.1 安装
- 4.2 打开
- 4.3 选择yolo标注格式
- 4.4 打标签
- 4.5 保存
- 5 训练
- 6 实现效果
-
- 6.1 pyqt实现简单GUI
- 6.3 视频识别效果
- 6.4 摄像头实时识别
- 7 最后
0 前言
优质竞赛项目系列，今天要分享的是
**基于YOLO实现的口罩佩戴检测 **
该项目较为新颖，适合作为竞赛课题方向，学长非常推荐！
学长这里给一个题目综合评分(每项满分5分)
- 难度系数：3分
- 工作量：4分
- 创新点：4分
更多资料, 项目分享：
https://gitee.com/dancheng-senior/postgraduate
1 课题介绍
受全球新冠肺炎疫情影响，虽然目前中国疫情防控取 得了良好效果，绝大多数地区处于疫情低风险，但个别地 区仍有零星散发病例和局部聚集性疫情。在机场、地 铁
站、医院等公共服务和重点机构场所规定必须佩戴口罩， 口罩佩戴检查已成为疫情防控的必备操作。目前，口罩 佩戴检查多为人工检查方式，如高铁上会有乘务人员一节
节车厢巡逻检查提醒乘客佩戴口罩，在医院等高危场所也 会有医务人员提醒时刻戴好口罩。人工检查方式存在检 查效率低下、难以及时发现错误佩戴口罩以及未佩戴口罩
行为等弊端。采用深度学习目标检测方法设计一个具有口罩识别功能的防疫系统，可以大大提高检测效率。
2 算法原理
2.1 算法简介
YOLOv5是一种单阶段目标检测算法，该算法在YOLOv4的基础上添加了一些新的改进思路，使其速度与精度都得到了极大的性能提升。主要的改进思路如下所示：
输入端：在模型训练阶段，提出了一些改进思路，主要包括Mosaic数据增强、自适应锚框计算、自适应图片缩放；
基准网络：融合其它检测算法中的一些新思路，主要包括：Focus结构与CSP结构；
Neck网络：目标检测网络在BackBone与最后的Head输出层之间往往会插入一些层，Yolov5中添加了FPN+PAN结构；
Head输出层：输出层的锚框机制与YOLOv4相同，主要改进的是训练时的损失函数GIOU_Loss，以及预测框筛选的DIOU_nms。
2.2 网络架构
上图展示了YOLOv5目标检测算法的整体框图。对于一个目标检测算法而言，我们通常可以将其划分为4个通用的模块，具体包括：输入端、基准网络、Neck网络与Head输出端，对应于上图中的4个红色模块。YOLOv5算法具有4个版本，具体包括：YOLOv5s、YOLOv5m、YOLOv5l、YOLOv5x四种，本文重点讲解YOLOv5s，其它的版本都在该版本的基础上对网络进行加深与加宽。
- 输入端-输入端表示输入的图片。该网络的输入图像大小为608*608，该阶段通常包含一个图像预处理阶段，即将输入图像缩放到网络的输入大小，并进行归一化等操作。在网络训练阶段，YOLOv5使用Mosaic数据增强操作提升模型的训练速度和网络的精度；并提出了一种自适应锚框计算与自适应图片缩放方法。
- 基准网络-基准网络通常是一些性能优异的分类器种的网络，该模块用来提取一些通用的特征表示。YOLOv5中不仅使用了CSPDarknet53结构，而且使用了Focus结构作为基准网络。
- Neck网络-Neck网络通常位于基准网络和头网络的中间位置，利用它可以进一步提升特征的多样性及鲁棒性。虽然YOLOv5同样用到了SPP模块、FPN+PAN模块，但是实现的细节有些不同。
- Head输出端-Head用来完成目标检测结果的输出。针对不同的检测算法，输出端的分支个数不尽相同，通常包含一个分类分支和一个回归分支。YOLOv4利用GIOU_Loss来代替Smooth L1 Loss函数，从而进一步提升算法的检测精度。
3 关键代码
class Detect(nn.Module):
stride = None # strides computed during build
onnx_dynamic = False # ONNX export parameter
def __init__(self, nc=80, anchors=(), ch=(), inplace=True): # detection layer
super().__init__()
self.nc = nc # number of classes
self.no = nc + 5 # number of outputs per anchor
self.nl = len(anchors) # number of detection layers
self.na = len(anchors[0]) // 2 # number of anchors
self.grid = [torch.zeros(1)] * self.nl # init grid
self.anchor_grid = [torch.zeros(1)] * self.nl # init anchor grid
self.register_buffer('anchors', torch.tensor(anchors).float().view(self.nl, -1, 2)) # shape(nl,na,2)
self.m = nn.ModuleList(nn.Conv2d(x, self.no * self.na, 1) for x in ch) # output conv
self.inplace = inplace # use in-place ops (e.g. slice assignment)
def forward(self, x):
z = [] # inference output
for i in range(self.nl):
x[i] = self.m[i](x[i]) # conv
bs, _, ny, nx = x[i].shape # x(bs,255,20,20) to x(bs,3,20,20,85)
x[i] = x[i].view(bs, self.na, self.no, ny, nx).permute(0, 1, 3, 4, 2).contiguous()
if not self.training: # inference
if self.onnx_dynamic or self.grid[i].shape[2:4] != x[i].shape[2:4]:
self.grid[i], self.anchor_grid[i] = self._make_grid(nx, ny, i)
y = x[i].sigmoid()
if self.inplace:
y[..., 0:2] = (y[..., 0:2] * 2 - 0.5 + self.grid[i]) * self.stride[i] # xy
y[..., 2:4] = (y[..., 2:4] * 2) ** 2 * self.anchor_grid[i] # wh
else: # for YOLOv5 on AWS Inferentia https://github.com/ultralytics/yolov5/pull/2953
xy = (y[..., 0:2] * 2 - 0.5 + self.grid[i]) * self.stride[i] # xy
wh = (y[..., 2:4] * 2) ** 2 * self.anchor_grid[i] # wh
y = torch.cat((xy, wh, y[..., 4:]), -1)
z.append(y.view(bs, -1, self.no))
return x if self.training else (torch.cat(z, 1), x)
def _make_grid(self, nx=20, ny=20, i=0):
d = self.anchors[i].device
if check_version(torch.__version__, '1.10.0'): # torch>=1.10.0 meshgrid workaround for torch>=0.7 compatibility
yv, xv = torch.meshgrid([torch.arange(ny).to(d), torch.arange(nx).to(d)], indexing='ij')
else:
yv, xv = torch.meshgrid([torch.arange(ny).to(d), torch.arange(nx).to(d)])
grid = torch.stack((xv, yv), 2).expand((1, self.na, ny, nx, 2)).float()
anchor_grid = (self.anchors[i].clone() * self.stride[i]) \
.view((1, self.na, 1, 1, 2)).expand((1, self.na, ny, nx, 2)).float()
return grid, anchor_grid
class Model(nn.Module):
def __init__(self, cfg='yolov5s.yaml', ch=3, nc=None, anchors=None): # model, input channels, number of classes
super().__init__()
if isinstance(cfg, dict):
self.yaml = cfg # model dict
else: # is *.yaml
import yaml # for torch hub
self.yaml_file = Path(cfg).name
with open(cfg, encoding='ascii', errors='ignore') as f:
self.yaml = yaml.safe_load(f) # model dict
# Define model
ch = self.yaml['ch'] = self.yaml.get('ch', ch) # input channels
if nc and nc != self.yaml['nc']:
LOGGER.info(f"Overriding model.yaml nc={self.yaml['nc']} with nc={nc}")
self.yaml['nc'] = nc # override yaml value
if anchors:
LOGGER.info(f'Overriding model.yaml anchors with anchors={anchors}')
self.yaml['anchors'] = round(anchors) # override yaml value
self.model, self.save = parse_model(deepcopy(self.yaml), ch=[ch]) # model, savelist
self.names = [str(i) for i in range(self.yaml['nc'])] # default names
self.inplace = self.yaml.get('inplace', True)
# Build strides, anchors
m = self.model[-1] # Detect()
if isinstance(m, Detect):
s = 256 # 2x min stride
m.inplace = self.inplace
m.stride = torch.tensor([s / x.shape[-2] for x in self.forward(torch.zeros(1, ch, s, s))]) # forward
m.anchors /= m.stride.view(-1, 1, 1)
check_anchor_order(m)
self.stride = m.stride
self._initialize_biases() # only run once
# Init weights, biases
initialize_weights(self)
self.info()
LOGGER.info('')
def forward(self, x, augment=False, profile=False, visualize=False):
if augment:
return self._forward_augment(x) # augmented inference, None
return self._forward_once(x, profile, visualize) # single-scale inference, train
def _forward_augment(self, x):
img_size = x.shape[-2:] # height, width
s = [1, 0.83, 0.67] # scales
f = [None, 3, None] # flips (2-ud, 3-lr)
y = [] # outputs
for si, fi in zip(s, f):
xi = scale_img(x.flip(fi) if fi else x, si, gs=int(self.stride.max()))
yi = self._forward_once(xi)[0] # forward
# cv2.imwrite(f'img_{si}.jpg', 255 * xi[0].cpu().numpy().transpose((1, 2, 0))[:, :, ::-1]) # save
yi = self._descale_pred(yi, fi, si, img_size)
y.append(yi)
y = self._clip_augmented(y) # clip augmented tails
return torch.cat(y, 1), None # augmented inference, train
def _forward_once(self, x, profile=False, visualize=False):
y, dt = [], [] # outputs
for m in self.model:
if m.f != -1: # if not from previous layer
x = y[m.f] if isinstance(m.f, int) else [x if j == -1 else y[j] for j in m.f] # from earlier layers
if profile:
self._profile_one_layer(m, x, dt)
x = m(x) # run
y.append(x if m.i in self.save else None) # save output
if visualize:
feature_visualization(x, m.type, m.i, save_dir=visualize)
return x
def _descale_pred(self, p, flips, scale, img_size):
# de-scale predictions following augmented inference (inverse operation)
if self.inplace:
p[..., :4] /= scale # de-scale
if flips == 2:
p[..., 1] = img_size[0] - p[..., 1] # de-flip ud
elif flips == 3:
p[..., 0] = img_size[1] - p[..., 0] # de-flip lr
else:
x, y, wh = p[..., 0:1] / scale, p[..., 1:2] / scale, p[..., 2:4] / scale # de-scale
if flips == 2:
y = img_size[0] - y # de-flip ud
elif flips == 3:
x = img_size[1] - x # de-flip lr
p = torch.cat((x, y, wh, p[..., 4:]), -1)
return p
def _clip_augmented(self, y):
# Clip YOLOv5 augmented inference tails
nl = self.model[-1].nl # number of detection layers (P3-P5)
g = sum(4 ** x for x in range(nl)) # grid points
e = 1 # exclude layer count
i = (y[0].shape[1] // g) * sum(4 ** x for x in range(e)) # indices
y[0] = y[0][:, :-i] # large
i = (y[-1].shape[1] // g) * sum(4 ** (nl - 1 - x) for x in range(e)) # indices
y[-1] = y[-1][:, i:] # small
return y
def _profile_one_layer(self, m, x, dt):
c = isinstance(m, Detect) # is final layer, copy input as inplace fix
o = thop.profile(m, inputs=(x.copy() if c else x,), verbose=False)[0] / 1E9 * 2 if thop else 0 # FLOPs
t = time_sync()
for _ in range(10):
m(x.copy() if c else x)
dt.append((time_sync() - t) * 100)
if m == self.model[0]:
LOGGER.info(f"{'time (ms)':>10s} {'GFLOPs':>10s} {'params':>10s} {'module'}")
LOGGER.info(f'{dt[-1]:10.2f} {o:10.2f} {m.np:10.0f} {m.type}')
if c:
LOGGER.info(f"{sum(dt):10.2f} {'-':>10s} {'-':>10s} Total")
def _initialize_biases(self, cf=None): # initialize biases into Detect(), cf is class frequency
# https://arxiv.org/abs/1708.02002 section 3.3
# cf = torch.bincount(torch.tensor(np.concatenate(dataset.labels, 0)[:, 0]).long(), minlength=nc) + 1.
m = self.model[-1] # Detect() module
for mi, s in zip(m.m, m.stride): # from
b = mi.bias.view(m.na, -1) # conv.bias(255) to (3,85)
b.data[:, 4] += math.log(8 / (640 / s) ** 2) # obj (8 objects per 640 image)
b.data[:, 5:] += math.log(0.6 / (m.nc - 0.999999)) if cf is None else torch.log(cf / cf.sum()) # cls
mi.bias = torch.nn.Parameter(b.view(-1), requires_grad=True)
def _print_biases(self):
m = self.model[-1] # Detect() module
for mi in m.m: # from
b = mi.bias.detach().view(m.na, -1).T # conv.bias(255) to (3,85)
LOGGER.info(
('%6g Conv2d.bias:' + '%10.3g' * 6) % (mi.weight.shape[1], *b[:5].mean(1).tolist(), b[5:].mean()))
# def _print_weights(self):
# for m in self.model.modules():
# if type(m) is Bottleneck:
# LOGGER.info('%10.3g' % (m.w.detach().sigmoid() * 2)) # shortcut weights
def fuse(self): # fuse model Conv2d() + BatchNorm2d() layers
LOGGER.info('Fusing layers... ')
for m in self.model.modules():
if isinstance(m, (Conv, DWConv)) and hasattr(m, 'bn'):
m.conv = fuse_conv_and_bn(m.conv, m.bn) # update conv
delattr(m, 'bn') # remove batchnorm
m.forward = m.forward_fuse # update forward
self.info()
return self
def autoshape(self): # add AutoShape module
LOGGER.info('Adding AutoShape... ')
m = AutoShape(self) # wrap model
copy_attr(m, self, include=('yaml', 'nc', 'hyp', 'names', 'stride'), exclude=()) # copy attributes
return m
def info(self, verbose=False, img_size=640): # print model information
model_info(self, verbose, img_size)
def _apply(self, fn):
# Apply to(), cpu(), cuda(), half() to model tensors that are not parameters or registered buffers
self = super()._apply(fn)
m = self.model[-1] # Detect()
if isinstance(m, Detect):
m.stride = fn(m.stride)
m.grid = list(map(fn, m.grid))
if isinstance(m.anchor_grid, list):
m.anchor_grid = list(map(fn, m.anchor_grid))
return self
def parse_model(d, ch): # model_dict, input_channels(3)
LOGGER.info(f"\n{'':>3}{'from':>18}{'n':>3}{'params':>10} {'module':<40}{'arguments':<30}")
anchors, nc, gd, gw = d['anchors'], d['nc'], d['depth_multiple'], d['width_multiple']
na = (len(anchors[0]) // 2) if isinstance(anchors, list) else anchors # number of anchors
no = na * (nc + 5) # number of outputs = anchors * (classes + 5)
layers, save, c2 = [], [], ch[-1] # layers, savelist, ch out
for i, (f, n, m, args) in enumerate(d['backbone'] + d['head']): # from, number, module, args
m = eval(m) if isinstance(m, str) else m # eval strings
for j, a in enumerate(args):
try:
args[j] = eval(a) if isinstance(a, str) else a # eval strings
except NameError:
pass
n = n_ = max(round(n * gd), 1) if n > 1 else n # depth gain
if m in [Conv, GhostConv, Bottleneck, GhostBottleneck, SPP, SPPF, DWConv, MixConv2d, Focus, CrossConv,
BottleneckCSP, C3, C3TR, C3SPP, C3Ghost]:
c1, c2 = ch[f], args[0]
if c2 != no: # if not output
c2 = make_divisible(c2 * gw, 8)
args = [c1, c2, *args[1:]]
if m in [BottleneckCSP, C3, C3TR, C3Ghost]:
args.insert(2, n) # number of repeats
n = 1
elif m is nn.BatchNorm2d:
args = [ch[f]]
elif m is Concat:
c2 = sum(ch[x] for x in f)
elif m is Detect:
args.append([ch[x] for x in f])
if isinstance(args[1], int): # number of anchors
args[1] = [list(range(args[1] * 2))] * len(f)
elif m is Contract:
c2 = ch[f] * args[0] ** 2
elif m is Expand:
c2 = ch[f] // args[0] ** 2
else:
c2 = ch[f]
m_ = nn.Sequential(*(m(*args) for _ in range(n))) if n > 1 else m(*args) # module
t = str(m)[8:-2].replace('__main__.', '') # module type
np = sum(x.numel() for x in m_.parameters()) # number params
m_.i, m_.f, m_.type, m_.np = i, f, t, np # attach index, 'from' index, type, number params
LOGGER.info(f'{i:>3}{str(f):>18}{n_:>3}{np:10.0f} {t:<40}{str(args):<30}') # print
save.extend(x % i for x in ([f] if isinstance(f, int) else f) if x != -1) # append to savelist
layers.append(m_)
if i == 0:
ch = []
ch.append(c2)
return nn.Sequential(*layers), sorted(save)
4 数据集
大家可采用公开标注好的数据集。如果为了更深入的学习也可自己标注，但过程相对比较繁琐，麻烦。
以下简单介绍数据标注的相关方法，数据标注这里推荐的软件是labelimg，学长以火灾数据集为例！
4.1 安装
通过pip指令即可安装
pip install labelimg
4.2 打开
在命令行中输入labelimg即可打开
打开你所需要进行标注的文件夹
4.3 选择yolo标注格式
点击红色框区域进行标注格式切换，我们需要yolo格式，因此切换到yolo。
4.4 打标签
点击Create RectBo -> 拖拽鼠标框选目标 -> 给上标签 -> 点击ok。
注：若要删除目标，右键目标区域，delete即可
4.5 保存
点击save，保存txt。
打开具体的标注文件，你将会看到下面的内容，txt文件中每一行表示一个目标，以空格进行区分，分别表示目标的类别id，归一化处理之后的中心点x坐标、y坐标、目标框的w和h。
5 训练
修改train.py中的weights、cfg、data、epochs、batch_size、imgsz、device、workers等参数
训练代码成功执行之后会在命令行中输出下列信息，接下来就是安心等待模型训练结束即可。
6 实现效果
6.1 pyqt实现简单GUI
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Win_mask(object):
def setupUi(self, Win_mask):
Win_mask.setObjectName("Win_mask")
Win_mask.resize(1107, 868)
Win_mask.setStyleSheet("QString qstrStylesheet = \"background-color:rgb(43, 43, 255)\";\n"
"ui.pushButton->setStyleSheet(qstrStylesheet);")
self.frame = QtWidgets.QFrame(Win_mask)
self.frame.setGeometry(QtCore.QRect(10, 140, 201, 701))
self.frame.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.frame.setFrameShadow(QtWidgets.QFrame.Raised)
self.frame.setObjectName("frame")
self.pushButton = QtWidgets.QPushButton(self.frame)
self.pushButton.setGeometry(QtCore.QRect(10, 40, 161, 51))
font = QtGui.QFont()
font.setBold(True)
font.setUnderline(True)
font.setWeight(75)
self.pushButton.setFont(font)
self.pushButton.setStyleSheet("QPushButton{background-color:rgb(151, 191, 255);}")
self.pushButton.setObjectName("pushButton")
self.pushButton_2 = QtWidgets.QPushButton(self.frame)
self.pushButton_2.setGeometry(QtCore.QRect(10, 280, 161, 51))
font = QtGui.QFont()
font.setBold(True)
font.setUnderline(True)
font.setWeight(75)
self.pushButton_2.setFont(font)
self.pushButton_2.setStyleSheet("QPushButton{background-color:rgb(151, 191, 255);}")
self.pushButton_2.setObjectName("pushButton_2")
self.pushButton_3 = QtWidgets.QPushButton(self.frame)
self.pushButton_3.setGeometry(QtCore.QRect(10, 500, 161, 51))
font = QtGui.QFont()
font.setBold(True)
font.setUnderline(True)
font.setWeight(75)
font.setStrikeOut(False)
self.pushButton_3.setFont(font)
self.pushButton_3.setStyleSheet("QPushButton{background-color:rgb(151, 191, 255);}")
self.pushButton_3.setObjectName("pushButton_3")
self.frame_2 = QtWidgets.QFrame(Win_mask)
self.frame_2.setGeometry(QtCore.QRect(230, 110, 1031, 861))
self.frame_2.setStyleSheet("")
self.frame_2.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.frame_2.setFrameShadow(QtWidgets.QFrame.Raised)
self.frame_2.setObjectName("frame_2")
self.show_picture_page = QtWidgets.QStackedWidget(self.frame_2)
self.show_picture_page.setGeometry(QtCore.QRect(-10, 0, 871, 731))
font = QtGui.QFont()
font.setBold(True)
font.setWeight(75)
self.show_picture_page.setFont(font)
self.show_picture_page.setObjectName("show_picture_page")
self.photo = QtWidgets.QWidget()
self.photo.setObjectName("photo")
self.label = QtWidgets.QLabel(self.photo)
self.label.setGeometry(QtCore.QRect(10, 30, 641, 641))
font = QtGui.QFont()
font.setFamily("Arial")
font.setPointSize(36)
self.label.setFont(font)
self.label.setText("")
self.label.setPixmap(QtGui.QPixmap("./images/UI/up.jpeg"))
self.label.setObjectName("label")
self.pushButton_4 = QtWidgets.QPushButton(self.photo)
self.pushButton_4.setGeometry(QtCore.QRect(680, 220, 171, 61))
font = QtGui.QFont()
font.setBold(True)
font.setUnderline(True)
font.setWeight(75)
self.pushButton_4.setFont(font)
self.pushButton_4.setStyleSheet("QPushButton{background-color:rgb(85, 170, 255);}")
self.pushButton_4.setObjectName("pushButton_4")
self.pushButton_5 = QtWidgets.QPushButton(self.photo)
self.pushButton_5.setGeometry(QtCore.QRect(680, 400, 171, 61))
font = QtGui.QFont()
font.setUnderline(True)
self.pushButton_5.setFont(font)
self.pushButton_5.setStyleSheet("QPushButton{background-color:rgb(85, 170, 255);}")
self.pushButton_5.setObjectName("pushButton_5")
self.show_picture_page.addWidget(self.photo)
self.videos = QtWidgets.QWidget()
self.videos.setObjectName("videos")
self.vid_img = QtWidgets.QLabel(self.videos)
self.vid_img.setGeometry(QtCore.QRect(10, 30, 640, 640))
font = QtGui.QFont()
font.setFamily("Arial")
font.setPointSize(36)
self.vid_img.setFont(font)
self.vid_img.setText("")
self.vid_img.setPixmap(QtGui.QPixmap("./images/UI/up.jpeg"))
self.vid_img.setObjectName("vid_img")
self.mp4_detection_btn = QtWidgets.QPushButton(self.videos)
self.mp4_detection_btn.setGeometry(QtCore.QRect(680, 220, 171, 61))
font = QtGui.QFont()
font.setBold(True)
font.setUnderline(True)
font.setWeight(75)
self.mp4_detection_btn.setFont(font)
self.mp4_detection_btn.setStyleSheet("QPushButton{background-color:rgb(85, 170, 255);}")
self.mp4_detection_btn.setObjectName("mp4_detection_btn")
self.vid_stop_btn = QtWidgets.QPushButton(self.videos)
self.vid_stop_btn.setGeometry(QtCore.QRect(680, 400, 171, 61))
font = QtGui.QFont()
font.setBold(True)
font.setUnderline(True)
font.setWeight(75)
self.vid_stop_btn.setFont(font)
self.vid_stop_btn.setStyleSheet("QPushButton{background-color:rgb(85, 170, 255);}")
self.vid_stop_btn.setObjectName("vid_stop_btn")
self.show_picture_page.addWidget(self.videos)
self.camera = QtWidgets.QWidget()
self.camera.setObjectName("camera")
self.webcam_detection_btn = QtWidgets.QPushButton(self.camera)
self.webcam_detection_btn.setGeometry(QtCore.QRect(680, 220, 171, 61))
self.webcam_detection_btn.setBaseSize(QtCore.QSize(2, 2))
font = QtGui.QFont()
font.setBold(True)
font.setUnderline(True)
font.setWeight(75)
self.webcam_detection_btn.setFont(font)
self.webcam_detection_btn.setStyleSheet("QPushButton{background-color:rgb(85, 170, 255);}")
self.webcam_detection_btn.setObjectName("webcam_detection_btn")
self.cam_img = QtWidgets.QLabel(self.camera)
self.cam_img.setGeometry(QtCore.QRect(10, 30, 640, 640))
font = QtGui.QFont()
font.setFamily("Arial")
font.setPointSize(36)
self.cam_img.setFont(font)
self.cam_img.setText("")
self.cam_img.setPixmap(QtGui.QPixmap("./images/UI/up.jpeg"))
self.cam_img.setObjectName("cam_img")
self.vid_stop_btn_cma = QtWidgets.QPushButton(self.camera)
self.vid_stop_btn_cma.setGeometry(QtCore.QRect(680, 400, 171, 61))
font = QtGui.QFont()
font.setBold(True)
font.setUnderline(True)
font.setWeight(75)
self.vid_stop_btn_cma.setFont(font)
self.vid_stop_btn_cma.setStyleSheet("QPushButton{background-color:rgb(85, 170, 255);}")
self.vid_stop_btn_cma.setObjectName("vid_stop_btn_cma")
self.show_picture_page.addWidget(self.camera)
self.label_2 = QtWidgets.QLabel(Win_mask)
self.label_2.setGeometry(QtCore.QRect(430, 40, 251, 71))
font = QtGui.QFont()
font.setPointSize(24)
font.setBold(True)
font.setItalic(False)
font.setUnderline(True)
font.setWeight(75)
self.label_2.setFont(font)
self.label_2.setStyleSheet("Font{background-color:rgb(85, 170, 255);}")
self.label_2.setObjectName("label_2")
self.listView = QtWidgets.QListView(Win_mask)
self.listView.setGeometry(QtCore.QRect(-5, 1, 1121, 871))
self.listView.setStyleSheet(" \n"
"background-image: url(:/bg.png);")
self.listView.setObjectName("listView")
self.listView.raise_()
self.frame.raise_()
self.frame_2.raise_()
self.label_2.raise_()
self.retranslateUi(Win_mask)
self.show_picture_page.setCurrentIndex(0)
QtCore.QMetaObject.connectSlotsByName(Win_mask)
##
6.2 图片识别效果
6.3 视频识别效果
6.4 摄像头实时识别
7 最后
更多资料, 项目分享：
https://gitee.com/dancheng-senior/postgraduate