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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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Monogame + HLSL Fisheye Vertex Shader

I'm working on a project for school where I need to implement a fisheye shader, and I'm struggling with the process for determining the depth values of the vertices. I know that for a point in space P1 = (x, y, z, w) that P * my projection matrix…
JamesMusicus
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Assertion while calibrating fisheye images using cv2.omnidir.calibrate

I am trying to calibrate a 200 deg FOV fisheye camera, using cv2.fisheye image is too much cropped while undistortion. When I am trying to calibrate using cv2.omnidir I got the following error. cv2.error: OpenCV(4.5.1)…
Danish Shahzad
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How do I fix warped walls in my raycaster?

I am writing a raycaster using the SDL library with C. I have been dealing with the fisheye effect for many weeks now. For a field of view like 60 degrees, I multiply the distance to the wall by the cosine of the relative angle (ranging from -30 to…
Caspian Ahlberg
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C# Flatten fisheye into rectangle for AI

I have a camera from which I pull images I want to give to an AI model on Azure. The camera has a fisheye lens and the output looks like this (OpenLab at TUKE University if you are interested): I want to flatten it into rectangle to increase…
Luk164
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fisheye extrinsics vs estimateWorldCameraPose

When calibrating a fisheye camera using Matlab, I get the fisheye intrinsics parameters: % Calibrate the camera using fisheye parameters [cameraParams, imagesUsed, estimationErrors] = estimateFisheyeParameters(imagePoints, worldPoints, ... …
AlixL
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I get an error with cv2.fisheye.calibrate and cannot calibrate the fisheye camera

I'm trying to calibrate my PIXPRO SP360 fisheye camera with OpenCV. I acquired seven images of the chessboard with the camera and ran the code, but I get an error in the cv2.fisheye.calibrate part. It seems to be able to detect the corners, but I…
keita ono
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OpenCV fisheye camera calibration problem

I am trying to calibrate a fisheye camera with this OpenCV module. As far as I know, it supports the calibration for cameras with a FOV up to 150º. When running the calibration procces, I get some results for the intrisics and the lens distorsion…
Javier Gonzlez de Mendibil
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Fisheye-Equirectangular conversion

I have an intrinsic parameter(fx,fy, cx,cy, k1~k4) of fisheye camera obtained by OpenCV's fisheye::calibrate(). How can I convert the fisheye image to an equirectangular image? I have seen some similar questions but none of them seems to reflect the…
urotanke
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Removing a fisheye effect from a simple raycasting renderer

I'm working on a self-directed project which involves casting a certain amount of rays out of a particle which the user can move at a given range of angle which the user can manipulate. I then render two things: A) An image of the particle within…
nekodjin
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Wide FOV and Large Baseline Fisheye stereo cameras rectification

Iam working on Fisheye stereo cameras, I can't Rectify the cameras for stereo correspondence due to the presence of vegetation and the large baseline between the cameras which make the task particularly challenging. The FOV is 210 degrees and…
O.Elshrief
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initUndistortRectifyMap gives wrong image

I faced with difficulties when trying to get result similar to this. After camera calibration I obtained the following parameters: DIM=(800, 600) K=np.array([[177.41548430658207, 0.0, 258.68599972062486], [0.0, 177.57591422482173,…
iodapro
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Opencv Omnidirectional Calibration Rectification

I have a wide angle lens (>160 degrees). I have tried both the Pinhole and Fisheye models and they seem to provide clear rectified images with a little FOV sacrifice. So I decided to give a try with the Omnidirectional Model. With the…
Joker
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Rectify panorama (equirectangular) image

I'm rectifying images in panorama (equirectangular) format captured by WV-SFV481 (Panasonic) camera. See the Manual file for the example of image (section 1.3 - 2.…
tudv
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Convert Fisheye Video into regular Video

I have a video stream coming from a 180 degree fisheye camera. I want to do some image-processing to convert the fisheye view into a normal view. After some research and lots of read articles I found this paper. They describe an algorithm (and some…
Uon Liaquat
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how to add Spherical Filter Effect (a fish eye) on UIImage in objective - C or in Realtime camera

I want to add a fisheye filter effect on UIImage in iphone App. on googling i get the effect like spherical image effect with vignette image effect. I have completed vignette effect but can't implement Spherical Image effect. Can any one suggest how…
Hichem Romdhane
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