Cannot find cv2.pyd in opencv3.10\mybuild\lib\Release
I cannot find cv2.pyd in opencv\mybuild\lib\Release. I use vs2015+opencv3.10+cmake3.4.3(32bit)+Anaconda(32bit) to compile opencv3.10. And in vs2015 I have failed two items. How to check which items...
View ArticleOpenCV slow on retina screen vs external screen
I have noticed a really weird behaivor of OpenCV on my Macbook 12 retina (Early 2015 model). I am using OpenCV 3.1.0 and Python 3.5.1 on Mac OSX El Capitan 10.11.2 When I put a window in the external...
View Articlehow can I measure seconds of eyes close/open ?
I am working 'drowsy driving detection systems' .I use python with opencv. But I have a problem.I dont know to measure seconds of eyes close/open. How can I solve this Problem?
View ArticleCannot find Brief DescriptorExtractor OpenCV 3.1
This is my Python code: import cv2 import numpy as np img = cv2.imread('image.jpg') gray= cv2.cvtColor(img,cv2.COLOR_BGR2GRAY) star = cv2.xfeatures2d.StarDetector_create() brief =...
View ArticleHow to add OpenCV as a Python dependencies?
Hi there, I've created a program that relies on OpenCV. What is the best practice for making it a dependancy for my program? Do I simply add OpenCV to the setup.py or would I have to include the C++...
View ArticleHow to compare more SUFR descriptors
I am working on ear Recognition project. I have database of ears, 60 person - each 4 ears. What I have already done, is that I detectAndCompute from each image Descriptors and Keypoints. Now I need to...
View ArticleHow does the cv2.VideoCapture class work with gstreamer pipelines?
Today I found out that you can use a gstreamer pipeline-string in the constructor of the VideoCapture class (see http://stackoverflow.com/a/23795492), like this: cv2.VideoCapture("autovideosrc !...
View ArticleIs it possible to draw half circle?
Simple question. Is it possible to draw half circle in OpenCV? If not, how can I do this especially in Python?
View Articleface.predict error in cv3 python 2.7
The following code works in cv2, but neither predict line works in cv3: recognizer = cv2.face.createLBPHFaceRecognizer(radius=2, neighbors=16, grid_x=3, grid_y=3) (prediction, conf) =...
View Articlehow to print detected marked circle in OMR sheet?
I am working on OMR and i am detecting circle who are selected by student. Now i am not getting how to get the selected numbered circle which marked by student.I am looking solution/idea for opencv...
View ArticleReal-Time video stitch (moving cameras)
Hi, I have just started to use openCV and I am very new to image/video processing and stitching so please bear with me while I explain what I am trying to accomplish. 1. I plan to purchase **3 HERO5...
View ArticleDeskew of image and ROI detection
In OMR, if scanned OMR is not in correct position then how can i deskew the image and search exact location of roll number rectangle?i want to extract information from different rectangle based on...
View ArticleRemove camera lag in opencv python
i am working on Odroid and running a face detection using open cv python on it. but there is too much lag in the camera. i have tried a lot of things but couldn't remove the lag. please suggest how...
View ArticleGet Trackbar Wont Work
Hi guys, i really need help for my project. Im new to python and openCV. I want to create trackbar for detecting the right threshold values for canny edge detection, However, it seems didnt work....
View Articlehow to find angle from x y points?
I have image which contain 12 center point of rectangle. I am not getting how to code for image rotation from that point.[C:\fakepath\deskew.png](/upfiles/14829318308820113.png).Please help me with...
View ArticleWhen I use 'cv2.imread()' the image window show not responding.Can somebody...
I am using opencv 2.7When I use 'cv2.imshow('image',img)' the image window shows not responding.I waited for some long,but still not respondiing.Somebody please help me.Thankyou.
View ArticleUnexpected result with RGB Histogram Backprojection
I noticed that when I apply cv2.calcBackProject on the pixel [b,v,r], it returns the backprojection on the pixel [b,v,0], the third channel's value is ignored while my histogram looks fine. Here is my...
View ArticleHow to detect a perfect black image?
Hi, This is my first post in this forum. I've written a color detection program for detecting Magenta color(only). But now I want to print a text when the magenta color is not present.Which means I...
View ArticleI have an image that has green background and uneven white object. How can i...
Please help me with the code..
View ArticleHow to refine the edges of an image?
Hi all, I extracted the following object using grabcut alogrithm. [image description](/upfiles/14835974907280043.png) However, i wish to have more refined edges of the extracted object. Is there any...
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