程序示例精选
QT+Python人脸表情特征识别
QT+Python是非常经典的窗体编程组合,功能完善,可视化界面美观易维护,这篇博客针对人脸表情特征识别方面编写代码,代码整洁,规则,易读,对学习与使用Python有较好的帮助。
代码如下(示例):
# coding:utf-8
import sys
#从转换的.py文件内调用类
import cv2
import numpy as np
import sys
import tensorflow as tffrom untitled import Ui_Dialog
from PyQt5 import QtWidgetsfrom PyQt5 import QtWidgets, QtCore, QtGui
from PyQt5.QtCore import *
代码如下(示例):
def openFileButton(self):imgName, imgType = QFileDialog.getOpenFileName(self,"打开文件","./","files(*.*)")img = cv2.imread(imgName)cv2.imwrite("temp/original.jpg", img)height, width, pixels = img.shapeprint("width,height",width,height)print("self.label.width()",self.label.width())print("self.label.height()",self.label.height())frame = cv2.resize(img, (int(rwidth), int(rheight)))print("rwidth-elif,rheight-elfi", rwidth, rheight)img2 = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB) # opencv读取的bgr格式图片转换成rgb格式_image = QtGui.QImage(img2[:], img2.shape[1], img2.shape[0], img2.shape[1] * 3, QtGui.QImage.Format_RGB888)jpg_out = QtGui.QPixmap(_image).scaled(rwidth, rheight) #设置图片大小self.label.setPixmap(jpg_out) #设置图片显示
该处使用的url网络请求的数据。
代码如下(示例):
def recogPerson(self):import osimport cv2img = cv2.imread("temp/original.jpg")cv2.imwrite("save/recognPerson2.jpg", img)face_detect = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')eye_detect = cv2.CascadeClassifier('haarcascade_eye.xml')# 灰度处理gray = cv2.cvtColor(img, code=cv2.COLOR_BGR2GRAY)# 检查人脸 按照1.1倍放到 周围最小像素为5face_zone = face_detect.detectMultiScale(gray,1.3,5)# print ('识别人脸的信息:\n',face_zone)l = len(face_zone)ints = 0# 绘制矩形和圆形检测人脸for x, y, w, h in face_zone:ints += 1# 绘制矩形人脸区域if w < 1000:cv2.rectangle(img, pt1=(x, y), pt2=(x + w, y + h), color=[0, 0, 255], thickness=2)# 绘制圆形人脸区域 radius表示半径cv2.circle(img, center=(x + w // 2, y + h // 2), radius=w // 2, color=[0, 255, 0], thickness=2)roi_face = gray[y:y + h, x:x + w] # 灰度图roi_color = img[y:y + h, x:x + w] # 彩色图eyes = eye_detect.detectMultiScale(roi_face)for (ex, ey, ew, eh) in eyes:cv2.rectangle(roi_color, (ex, ey), (ex + ew, ey + eh), (0, 255, 0), 2)cv2.imwrite("save/recognPerson.jpg", img)#cv2.waitKey(0)
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