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Get HSV and RGB values of an image

February 15, 2018, 11:40 pm

im trying to get RGB values of an image. which i can get Min(R-G-B),Med(R-G-B),Max(R-G-B) also i want to get the HSV of RGB with same format HSVMIN(R-G-B), HSVMED(R-G-B), HSVMAX(R-G-B).

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Geeting error while reading the xml file.

February 16, 2018, 1:26 am

Hi , I am getting the error while reading the xml file. The error message is.."duplicate key". I have attached read and write function and screenshot of xml file.![image...

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i want to use my usb camera in raspberry pi and i have written this code ,...

February 16, 2018, 3:48 am

import cv2,io,imutils import numpy from imutils.video import VideoStream print("Starting Camera...........") webcam = VideoStream(0).start() webcam.resolution = (640, 320) detector=...

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Check for metamers in an image (using C++)

February 16, 2018, 5:26 am

How do I check how many metamers on my image using OpenCV & C++ ? For example in this picture, what I'm trying to do is find out that box in no 1 & 5 are metamers, also box no. 3 & 6. So...

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Opening an OpenCV window in a Windows Runtime component (C++) for a UWP app

February 16, 2018, 6:26 am

I'm stuck with some linker errors when trying to call the imshow function in my WinRT component for a UWP app. The component simply calls imshow after a type conversion on the file name string, which...

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Error msg intalling opencv Python on window

February 16, 2018, 6:59 am

Hi ,I am new to OpenCV. I am trying to install opencv-python for Windows. I literally followed instruction from this link: https://docs.opencv.org/3.2.0/d5/de5/tutorial_py_setup_in_windows.html When I...

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opencv cmake issue

February 16, 2018, 3:36 pm

I used to compile from vc12 or msvstudio12 2013,, i like using vc12 because it only needs the basic files, like msvcp120.dll and msvcr120.dll in which in could be run or open from windows XP. so,...

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How do I find a vertical line in a image?

February 18, 2018, 8:37 am

My current project is to use OpenCV and a webcam to follow a line with the Lego Mindstorm EV3. That would be black tape on a light background. I have a test image (white left, black right) that I can...

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How to warp image with predefined homography matrix in OpenCV?

February 18, 2018, 11:40 am

I am trying to set predefined values to homography and then use function warpPerspective that will warp my image. First i used findHomography function and displayed result: H = findHomography(obj,...

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How can i use mask created by background substraction algorithm to see the...

February 19, 2018, 1:13 am

I have used the back ground substraction algorithm to create a mas k of moving object now i need to crop the actual image showing only moving object and save it in pc. How can it be done. winName=...

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Integrate OpenCV with Sikulli

February 19, 2018, 3:42 am

Hi, Is it possible to integrate OpenCV with Sikulli? I have an image which detected a button with MSER method. And i want to use that image with that button to increase the size of the button with...

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Training and Test images must be of equal size! OpenCV Crash iOS

February 19, 2018, 9:48 am

I am using the fisher face recognizer. When I call the predict function the app crashes. This is what it says in the logs... Face DetectedOpenCV(3.4.0-dev) Error: Bad argument (Wrong input image size....

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How to run background process for accessing camera and image processing with...

February 19, 2018, 10:56 am

I have learned how we can do image processing in Android with Open-CV but normally we have to extend Activity for doing so. I have gone through the 15-Puzzle Sample Game, is there a way where we can...

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Saving Clusters in OpenCV

February 19, 2018, 5:12 pm

I'm using OpenCV with Python 3.6. Suppose I have this [this black-white binary image](https://i.stack.imgur.com/j2paS.png), which shows 10 white blobs on a black background. Is it possible to save each...

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Why do we get different predictions when using java and python(dnn)?

February 19, 2018, 9:02 pm

When using the python language at the output of a neural network, I get an array consisting of numbers from 0 to 5. For example: ...[3 3 3 ... 1 1 1] [3 3 3 ... 1 1 1] [3 3 3 ... 1 1 1]... When using...

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Using ORB image recognition

February 20, 2018, 6:02 am

Hello, I have to create a traffic sign detector (in python)which detect,distinguish three sort pf panels (turn right,left ,stop) and show the distance between the vehicle and the sign. I don't know how...

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How can i set mouse callbacks to different windows with python

February 20, 2018, 12:02 pm

I am working on a project that will require me to have two OpenCV windows,i want to set callbacks for the different windows,how do i go about it using python

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Template matching not finding all image occurrences

February 21, 2018, 1:55 am

I am not getting 100% result in template matching. If the match pertcentage is 95, it will not show all the target image found. It will show few matches and skip others. I checked the area that missed,...

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How to do Nightly Build to the OpenCV for Windows?

February 21, 2018, 2:16 am

I'm new to this OpenCV Library. I would like to know **how to do the nightly building process** for the *Opencv* code in *windows*. I have been checking with this to work on? But i don't get any...

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Function to find joint probability and conditional probability in OpenCV

February 21, 2018, 3:23 am

Is there any built-in function to find Joint Probability and Conditional Probability of images in OpenCV! What does the function "CalcProbDensity" does? OpenCV documentation explanation says divide...

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