opencv手冊中 1.3.2 Arithmetic Operations on Images
範例
import cv2
import numpy as np
img2 = cv2.imread('opencv_logo.png',1)
img1 = np.zeros(img2.shape)+100
#(書上範例是另一個圖，我找不到就開一個大小一樣的矩陣)
dst = cv2.addWeighted(img1,0.3,img2,0.7,0)
cv2.imshow('dst',dst)
cv2.waitKey(0)
cv2.destroyAllWindows()
然後會產生下列Error，請問是甚麼原因呢?
OpenCV Error: Bad argument (When the input arrays in
add/subtract/multiply/divide functions have different types, the output array
type must be explicitly specified) in cv::arithm_op, file
D:\library\opencv3.1\sources\modules\core\src\arithm.cpp, line 663
Traceback (most recent call last):
File
"C:/Users/cash.chien/PycharmProjects/OpenCVParactice/Basic_Operations_on_Images.py",
line 7, in <module>
dst = cv2.addWeighted(img1,0.3,img2,0.7,0)
cv2.error: D:\library\opencv3.1\sources\modules\core\src\arithm.cpp:663:
error: (-5) When the input arrays in add/subtract/multiply/divide functions
have different types, the output array type must be explicitly specified in
function cv::arithm_op