我正在開發一個程序,用於在python中剪切大型圖像中的圖像。但是,即使看到它們,我也遇到了問題。在OpenCV中使用大型(超過3000x3000)圖像,並且它們不適合我的屏幕
我正在使用的圖像可以超過2000x2000,並且它們不適合我的屏幕。這是代碼:
import cv2
import sys
# Get user supplied values
imagePath = sys.argv[1]
cascPath = sys.argv[2]
# Create the haar cascade
faceCascade = cv2.CascadeClassifier(cascPath)
# Read the image
image = cv2.imread(imagePath)
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
# Detect faces in the image
faces = faceCascade.detectMultiScale(
gray,
scaleFactor=1.2,
minNeighbors=5,
minSize=(100, 100),
flags = cv2.cv.CV_HAAR_SCALE_IMAGE
)
print "Found {0} faces!".format(len(faces))
# Draw a rectangle around the faces
for (x, y, w, h) in faces:
cv2.rectangle(image, (x, y), (x+w, y+h), (0, 255, 0), 2)
cv2.NamedWindow(name, flags=WINDOW_NORMAL)
cv2.imshow("Faces found", image)
cv2.waitKey(0)
這是我很關心的部分:現在
cv2.NamedWindow(name, flags=WINDOW_NORMAL)
cv2.imshow("Faces found", image)
cv2.waitKey(0)
,OpenCV的文檔有instructions如何改變窗口大小,但到目前爲止,我不斷收到錯誤:
錯誤1:
Found 2 faces!
Traceback (most recent call last):
File "face_detect.py", line 31, in <module>
cv2.NamedWindow(name, flags=WINDOW_NORMAL)
AttributeError: 'module' object has no attribute 'NamedWindow'
錯誤2:
Found 2 faces!
Traceback (most recent call last):
File "face_detect.py", line 31, in <module>
cv2.namedWindow("", WINDOW_NORMAL)
NameError: name 'WINDOW_NORMAL' is not defined
錯誤3:
File "face_detect.py", line 31
cv2.namedWindow(winname[, WINDOW_NORMAL])
^
SyntaxError: invalid syntax
誰能告訴我什麼,我做錯了嗎?
這可能是值得嘗試用'sudo apt-get install python-opencv'重新安裝軟件包... :) – filaton
@filaton對於一些錯別字來說,這是一點點修正。 – Suever
@Suever對! :)但是我記得一些OpenCV在未正確安裝時拋出相同異常的情況,這就是爲什麼我說這可能是值得的。 – filaton