OpenCV_Window_Management

Tools工具包/OpenCV_Window_Management/__init__.py

@@ -0,0 +1,10 @@
+# -*- coding: utf-8 -*-
+# @Time    : 2017/7/18 下午11:14
+# @Author  : play4fun
+# @File    : __init__.py
+# @Software: PyCharm
+
+"""
+__init__.py:
+"""
+

Tools工具包/OpenCV_Window_Management/opencv_windows_management.py

@@ -0,0 +1,66 @@
+# -*- coding: utf-8 -*-
+# @Time    : 2017/7/18 下午10:34
+# @Author  : play4fun
+# @File    : opencv_windows_management.py
+# @Software: PyCharm
+
+"""
+opencv_windows_management.py:
+"""
+
+import cv2, math
+import tkinter as tk
+
+
+class Window:
+    def __init__(self, name, image, weight=1):
+        self.name = name
+        self.image = image.copy()
+        self.weight = weight
+        self.shape = self.image.shape
+        self.hight_x = self.shape[0]
+        self.lenght_y = self.shape[1]
+
+
+class opencv_windows_management:
+    def __init__(self):
+        self.windows = dict()
+
+        root = tk.Tk()
+        screen_width = root.winfo_screenwidth()
+        screen_height = root.winfo_screenheight()
+        self.screen_size = (screen_width, screen_height)  # (1280, 800)
+        root.quit()
+
+    def add(self, name, image, weight=1):
+        '''
+        权重,越高，图片显示越大
+        :return:
+        '''
+        cv2.namedWindow(name, flags=cv2.WINDOW_AUTOSIZE)
+        window = Window(name, image, weight)
+        self.windows[name] = window
+        # self.windows[name] = image
+
+    def show(self):
+        lenw = len(self.windows)
+        w_l = int(self.screen_size[0] / lenw)
+
+        max_num_line = math.ceil(math.sqrt(lenw))  # 取平方根
+        # TODO 权重
+
+        for i, name in enumerate(self.windows):
+            # if (i+1) >max_num_line:
+            #     #TODO 换行
+            #     cv2.moveWindow(name, w_l * i, h_x*j)
+            #     pass
+
+            win = self.windows[name]
+            image = win.image
+            # image = self.windows[name]
+            # h_x = int(image.shape[1] / w_l * image.shape[0]) #保持比例
+            h_x = int(w_l / win.lenght_y * win.hight_x)  # 保持比例
+            # print((w_l,h_x))
+            img2 = cv2.resize(image, (w_l, h_x))
+            cv2.moveWindow(name, w_l * i, 0)
+            cv2.imshow(name, img2)

Tools工具包/OpenCV_Window_Management/test_cvwm_images.py

@@ -6,5 +6,34 @@
 
 """
 test_cvwm_images.py:
+# show 多张相片
 """
 
+import cv2
+import numpy as np
+import os
+import errno
+from opencv_windows_management import opencv_windows_management
+
+cvwm = opencv_windows_management()
+
+path = '../../data/messi5.jpg'
+if not os.path.exists(path):
+    raise FileNotFoundError(errno.ENOENT, os.strerror(errno.ENOENT), path)
+
+img = cv2.imread(path, cv2.IMREAD_UNCHANGED)  # 包括图像的 alpha 通道
+print(img.shape)
+# cv2.imshow('src', img)
+cvwm.add('src', img)
+
+gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
+
+# cv2.imshow('gray', gray)
+cvwm.add('gray', gray)
+
+ret, thresh1 = cv2.threshold(gray, 127, 255, cv2.THRESH_BINARY)
+cvwm.add('thresh1', thresh1)
+
+cvwm.show()
+
+cv2.waitKey(0)

Tools工具包/OpenCV_Window_Management/test_cvwm_videos.py

@@ -8,3 +8,41 @@
 test_cvwm_videos.py:
 """
 
+import cv2
+from opencv_windows_management import opencv_windows_management
+
+cvwm = opencv_windows_management()
+
+cap = cv2.VideoCapture(0)
+ret = cap.set(3, 640)
+ret = cap.set(4, 480)
+
+#
+face_cascade = cv2.CascadeClassifier('/usr/local/share/OpenCV/haarcascades/haarcascade_frontalface_default.xml')
+
+while cap.isOpened():
+    ret, frame = cap.read()
+
+    frame = cv2.flip(frame, flipCode=1)
+    cvwm.add('frame', frame)
+
+    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
+    # cv2.imshow('frame', gray)
+    cvwm.add('gray', gray)
+
+    #人脸识别
+    faces = face_cascade.detectMultiScale(gray, 1.3, 5)
+    print("Detected ", len(faces), " face")
+    for (x, y, w, h) in faces:
+        face = gray[y:y + h, x:x + w]
+        cvwm.add('face', face)
+
+    cvwm.show()
+
+    key = cv2.waitKey(delay=1)
+    if key == ord("q"):
+        break
+
+# When everything done, release the capture
+cap.release()
+cv2.destroyAllWindows()

ch04-图片/cv2_imread_path_not_found.py

@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+# @Time    : 2017/7/19 上午10:52
+# @Author  : play4fun
+# @File    : cv2_imread_path_not_found.py
+# @Software: PyCharm
+
+"""
+cv2_imread_path_not_found.py:
+"""
+
+import cv2
+import numpy as np
+import os
+import errno
+
+path = 'messi6.jpg'#不正确的路径，文件不存在
+# path = '../data/messi5.jpg'
+if not os.path.exists(path):
+    raise FileNotFoundError(errno.ENOENT, os.strerror(errno.ENOENT), path)
+
+img = cv2.imread(path, cv2.IMREAD_UNCHANGED)
+
+cv2.imshow('src', img)
+cv2.waitKey(0)

ch05-视频/5.VideoCapture.py

@@ -24,7 +24,7 @@
 # ret=cap.set(3,320)
 # ret=cap.set(4,240)
 
-ret = cap.set(3, 640)
+ret = cap.set(3, 640)#避免计算量过大
 ret = cap.set(4, 480)
 
 # while (True):

ch14-几何变换/14.仿射变换getAffineTransform.py

@@ -25,11 +25,11 @@
 
 plt.figure(figsize=(8, 7), dpi=98)
 p1 = plt.subplot(211)
-p1.imshow(img)
+p1.show(img)
 p1.set_title('Input')
 
 p2 = plt.subplot(212)
-p2.imshow(dst)
+p2.show(dst)
 p2.set_title('Output')
 
 plt.show()

ch14-几何变换/14.透视变换getPerspectiveTransform.py

@@ -24,11 +24,11 @@
 
 plt.figure(figsize=(8, 7), dpi=98)
 p1 = plt.subplot(211)
-p1.imshow(img)
+p1.show(img)
 p1.set_title('Input')
 
 p2 = plt.subplot(212)
-p2.imshow(dst)
+p2.show(dst)
 p2.set_title('Output')
 
 plt.show()