opencv Questions
12
When I run
!pip install imgaug==0.4.0
the following is the output
Collecting imgaug==0.4.0
Using cached https://files.pythonhosted.org/packages/66/b1/af3142c4a85cba6da9f4ebb5ff4e21e2616309552caca...
Bookcase asked 31/8, 2020 at 11:14
20
Solved
In [windows server 2012 R2 x64, python 3.7 64x]
pip install opencv-contrib-python
installed without any error .
and when I try to import it
import cv2
show me this error :
Traceback (most r...
Lentil asked 15/9, 2018 at 23:20
2
Solved
OpenCV => 3.2
Operating System / Platform => Windows 64 Bit
Compiler => Visual Studio 2015
I am currently working on my project which involves vehicle detection and tracking and estimating and o...
Johnsonian asked 22/5, 2017 at 4:23
30
Solved
I am using opencv2 in python with the code
import cv2
cv2.namedWindow("output", cv2.WINDOW_NORMAL)
cv2.imshow("output",im)
cv2.resizeWindow('output', 400,400)
cv2.waitKey(0)
cv2.destroyAllWindows...
3
Solved
I am currently doing a motion detection project that records down video when motion is detected. Right now there is no error when recording the video but when i check on the video, it is 0 bytes. A...
Coletta asked 12/7, 2017 at 4:6
3
Solved
What does the cv::normalize(_src, dst, 0, 255, NORM_MINMAX, CV_8UC1); do in OpenCV?
I went through the documentation and was unable to understand what alpha, beta, NORM_MINMAX and CV_8UC1 actually...
Gentlefolk asked 19/8, 2012 at 3:19
14
This line:
sift = cv2.xfeatures2d.SIFT_create()
return error:
Traceback (most recent call last):
File "C:/Python27/openCVskrypty/GUI/SOLUTION2.py", line 11, in <module>
sift = cv2.xfeat...
21
Solved
I had installed OpenCV following these steps. After trying to compile one example, I got this error:
OpenCV Error: Unspecified error (The function is not implemented. Rebuild the library with Windo...
15
I am using OpenCV 3 and python 2.7 and coding using PyCharm. The code works fine but PyCharm does not recognize cv2 as a module. It underlines it with a red line, so it doesn't display its function...
7
Solved
How to smooth the edges of this binary image of blood vessels obtained after thresholding.
I tried a method somewhat similar to this method but did not quite get the result I expected.
Here...
Outdoors asked 24/5, 2016 at 9:40
7
import numpy as np
import cv2
cap = cv2.VideoCapture('vtest.avi')
fgbg = cv2.bgsegm.createBackgroundSubtractorMOG()
while(1):
ret, frame = cap.read()
fgmask = fgbg.apply(frame)
cv2.imshow('frame...
7
I'm having an error running simple code using cv2 module.
It's just:
import cv2
img = cv2.imread('sudoku.png',0)
cv2.imshow('image',img)
And it fails with the following error:
QObject::moveT...
6
I'm looking for the fastest and more efficient method of detecting an object in a moving video. Things to note about this video: It is very grainy and low resolution, also both the background and f...
Fordo asked 20/11, 2009 at 15:52
21
I used the following page from OpenCV 3.0.0 tutorial: Tutorial in docs
When I tried to use the example that saves videos, it doesn't work.
It displays the content from the webcam, and also creates ...
7
Solved
I copied code from https://mcmap.net/q/325821/-python-how-to-capture-image-from-webcam-on-click-using-opencv and used with default (built-in) camera, it worked. Then I attached USB camera, tested i...
Coonhound asked 26/8, 2018 at 18:37
44
I'm trying to install OpenCV for Python through Anaconda, but I can't seem to figure this out.
I tried
conda install opencv
conda install cv2
I also tried searching
conda search cv
No cigar....
10
Solved
I am trying to implement contours using the following code..
im = cv2.imread('C:\Users\Prashant\Desktop\T.jpg')
imgray = cv2.cvtColor(im,cv2.COLOR_BGR2GRAY)
ret,thresh = cv2.threshold(imgray,127,2...
Adigranth asked 31/12, 2013 at 3:41
4
Solved
I am working on pre-trained vgg16 model, for that I need to have input size of image file to be (224,224,3).
The code I am working on is:
from tensorflow.keras.preprocessing import image
import cv2...
Cacciatore asked 14/1, 2021 at 11:27
4
Solved
I tried to use the following codes to play YouTube videos on Google Colab,
!pip install pytube==9.1.0
from pytube import YouTube
yt = YouTube('https://www.youtube.com/watch?v=-ncJV0tMAjE&t=72s...
Shcherbakov asked 28/8, 2018 at 5:42
9
This happened out of the blue, I was able to import cv2 but now I get 'AttributeError: partially initialized module 'cv2' has no attribute 'gapi_wip_gst_GStreamerPipeline' (most likely due to a cir...
7
Solved
PS C:\Windows\system32> npm install -g opencv4nodejs
npm WARN cleanup Failed to remove some directories [
npm WARN cleanup [
npm WARN cleanup 'C:\\Users\\deepakv\\AppData\\Roaming\\npm\\node_mod...
5
Solved
I would like to know how to write a function in Python 3 using OpenCV which takes in an image and a threshold and returns either 'dark' or 'light' after heavily blurring it and reducing quality (fa...
Iatrics asked 25/9, 2018 at 20:5
5
Solved
I'm trying to read a 16 bit grayscale image using OpenCV 2.4 in Python, but it seems to be loading it as 8 bit.
I'm doing:
im = cv2.imread(path,0)
print im
[[25 25 28 ..., 0 0 0]
[ 0 0 0 ..., 0 ...
7
Solved
I've been working with code to display frames from a movie. The bare bones of the code is as follows:
import cv2
import matplotlib.pyplot as plt
# Read single frame avi
cap = cv2.VideoCapture('si...
Kingkingbird asked 23/1, 2016 at 17:28
3
Solved
I have downloaded the source code of the face-analysis SDK from http://face.ci2cv.net/. Now I am trying to get it running. I downloaded all the necessary software and followed the installation inst...
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