Rotation and Translation question
I've used OpenCV's calibrateCamera function to give me the rvecs and tvecs to try to get the transformation from that of my camera with world coordinates (0,0,0) to that of a chessboard. I'm using it...
View ArticleI'm working on a project multiple object detection and tracking . i have a...
from collections import deque import io import time #import picamera import cv2 import numpy as np cap = cv2.VideoCapture(0) while(1): # Take each frame% _, frame = cap.read() # Convert BGR to HSV...
View ArticlePython: Play UDP video streaming while sending keep alive messages
have a program which connects with a camera via socket. This camera starts to livestream video when I send a message throught this socket, and continues while I send keep alive messages. The video is...
View ArticleSystem.loadLibrary(...) could not find native library in my case
I want to create a simple android project using native libs, I copied existing native library from another Android project into my android project under jniLibs folder. I am new in this, i will...
View ArticleDoes OpenCV support GDAL for writing?
I noticed that there's an example that uses GDAL for reading here https://github.com/Itseez/opencv/blob/master/samples/cpp/tutorial_code/HighGUI/GDAL_IO/gdal-image.cpp , which is very cool, but what do...
View ArticleWhy no QT support on in Visual Studio but able to include QT when installation
Hi, I have build more than 2 times for QT add. http://docs.opencv.org/2.4/doc/tutorials/introduction/windows_install/windows_install.html From the procedure i had succesfully add the QT as in picture...
View ArticleHow to evaluate light linearity and additivity with a camera
Hi, lastly I am questioning the linearity and additivity of light propagation in images. As the title says I would like to see what is the contribution of light to image pixel intensity values and if...
View ArticleAdding Noise to Image - Opencv
Hi everyone! I'm trying to to add noise to an Image & then Denoise it to test my DeNoising algorithm! So for benchmark i'm referring this [Online Test samples][1]. I'm trying to replicate the...
View ArticleHow can I detect vertical and horizontal edge at Android
I want to detect a vehicle using histogram of the vertical and the horizontal edge. How can I detect vertical and horizontal edge on the camera and make the each histogram? plz reply. and give me a...
View ArticleHow to add noise to color image, so that the MSE becomes square of the...
I have added noise to color image. But when I am calculating the MSE, it is very low compared to the added noise. For std=20, the MSE is below 200. But I think MSE should be close to square of...
View Articlehow to read the frames from url?
i want read the frames from the url and i want to calculate the fps and bit rate in opencv android when try to open the connection its showing always FALSE. below is my code snippet plz help me public...
View ArticleSurf image matcher this with distorted results
I have the following class that uses the android camera to capture an information to make a match of another image using opencv 3.1 with surf. public class MyCameraPreview implements...
View ArticleputText - result is always black text
Hello, I have a Matrix of type CV_16UC1 which holds 16bit grayscale pixel data from an external camera. I want to use putText to draw WHITE text over the image. But regardless which of the following...
View Articlehow to make a GUI in openCV with arduino values??
Actually i am working on a project for which i have to make a GUI using openCV using c language,which will include live webcam feed,a pressure sensor values and a temperature sensor value using an...
View ArticleKNN Performance
I am implementing KNN in opencv and comparing results to weka. FOr exact same data and knn parameters, there's an ~10% difference in performance with better performance achieved by weka. I implemented...
View ArticleOpenCV 3.1 - Upper body detection not working in any example
My problem: no upper bodies are being detected when using haarcascade_profileface.xml or haarcascade_mcs_profileface.xml. Software used: - print cv2._ _version__ yields 3.0.0 although the x86 version...
View ArticleObject Tracking with Mouse event
I have a project where I have to track a desired object by creating a user interface. The idea is basically that I will have a window showing the video stream and with the mouse I can click the object...
View ArticleBest book for opencv android development for beginners
I am new in opencv android development and want to know the basics of making application in opencv environment
View ArticleHow to make database in opencv android
I am new to opencv and trying to make a application in android...But I get stuck on to make database? I am working on Eclipse MARS.1 and using opencv 3.1.0.
View ArticleOpenCV stitching chooses certain image to stitch
My code could stitch these certain 2 images just fine. But when i try to stitch other images, it gives distorted results. Any heads up why?
View Article
