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Questions tagged [fisheye]

A Fisheye-effect is a distortion of images, such as that provided by a Fisheye lens, by which a wide-angle effect is achieved. If you are looking for information on Atlassian's Fisheye source code browser web app, please see atlassian-fisheye.

A Fisheye-effect is a distortion of images, such as that provided by a Fisheye lens, by which a wide-angle effect is achieved.

If you are looking for information on Atlassian's Fisheye source code browser web app, please see atlassian-fisheye.

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get point position after fisheye::initUndistortRectifyMap

I got a photo from a Fisheye camera and I need to do a camera calibration. Now I knew the point like A in the photo, after fisheye::initUndistortRectifyMap(cameraMatrix, distCoeffs, Mat(),dst_cameraMatrix,imageSize*2, CV_32FC1, map_x, map_y…
Eunice TT
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Face Recognition using python in fisheye camera

I wanted to create an application where it detects the face in fisheye camera but i have no idea how to compress it to fisheye camera but it detects the faces in the normal webcam i tired different ways like editing the points in the face and i…
Logesh M
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OpenCV fisheye calibration C++ output differs from Python

I’m currently working on a camera that have a fisheye (which is not much but still) and I’m trying to undistort it. As starter : I’m not that familiar with opencv, I’m like always on the documentation while trying to do anything. (and/or here…
Nicolas Wadel
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OpenCV - Fisheye Calibration Values (Reuse values saved in JSON file)

I have calibrated my fisheye cameras getting the new matrix and parameters. I have saved them in a JSON file. Now I have problems reusing the JSON file again to calibrate my camera. Referred from…
CigarDon
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In OpenCV.fisheye, What is difference between 'calibrate()' and 'undistortimage()' functions?

I read OpenCV.fisheye official manual, and I'm confused about the use of calibrate() and undistortImage() functions. I know that both are used to fix some distortion in an image but, it looks too similar to me. The docs I referred to are: …
SY HA
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How to show the correct video-image from calibrated camera stream?

I recently studied OpenCV. My task: to display a calibrated image from an action camera. I calibrated the camera. I can easily get a good calibrated image. #CODE TO WORK WITH IMAGE import numpy as np import cv2 import sys #Matrix DIM = (1280,720) K…
Dmitriy D
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How to convert images taken in a fish eye camera into plane (rectangular) images using opencv?

Is there any predefined code for this or I have to write my own code? Also, I do not have the camera properties for this, I have only the image taken in fisheye lens and now I have to flatten the images
ROHAN BAGEWADI
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how to setup svnserve protocol for subversion repositories?

We are facing some timeout issue in fisheye - svn repositories. We are using https:// protocol for Subversion. So we are thinking this might be causing the issue. We want to setup svn:// protocol for better indexing in fisheye. How could we setup…
Gangadhar
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undefined reference to cv::fisheye::calibrate

I am trying to calibrate my fisheye camera using the cv::fisheye::calibrate fucntion. However, I get the following error while trying to compile. `undefined reference to 'cv::fisheye::calibrate(cv::_InputArray const&, cv::_InputArray const&,…
Surabhi Verma
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OpenCV Fisheye Calibration giving large error on identical points

I'm trying to correct for fisheye in an image using OpenCV. I can't get the calibration step to work. I've tried the code below to calibrate, and even with identical x and y coordinates in the input and output, the returned rms is at least…
wcroughan
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arithm_op Error in Fisheye Calibration of OpenCV python Bindings

I got this error and I cant resolve this error. I guess the error is related to optimizing module and caused by type of input vector. But I cant resolve it!!! Please give me a solution. cv2 version is 3.1.0 python 3.5 below is my code import…
shibata tomoki
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Do you obtain same Camera Matrix result using cv::calibrateCamera() that using cv::fisheye::calibrate()

I am working on a project to calibrate fisheye cameras, the main problem is that i want to save the parameters obtained in the calibration. Using cv::calibrateCamera(), Camera Matrix is a cv::Mat that using cv::FileStorage i can easy read and write.…
Alejandro
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stereo vision fish eye camera calibration

I am trying to do fish-eye stereo calibration using Opencv and Python at first I have done stereo calibration of the single camera print("Calibrating left fisheye camera...") rms, _, _, _, _ =…
Kush
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How to do distortion on a topoJSON mesh

I'm working on a variation of a topojson map using fisheye distortion. While I have the topojson feature and datapoints apply the behavior, I can't seem to get it working for the mesh. This is my code: countries.attr('d', path); circles …
JMags1632
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Correcting the whole viewing sphere of fisheye image

I was wondering are there methods for correcting the whole viewing sphere of a raw fisheye image? If I understood correctly. The common strategy for removing barrel distortion from fisheye images is first to crop the spherical fisheye image to the…
R1pe
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