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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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What are the main references to the fish-eye camera model in OpenCV3.0.0dev?

I am wrestling with the Fish-Eye Camera Model used in OpenCV 3.0.0.dev. I have read the documentation in this link several times, especially the "Detailed Description" part and formulas modeling fish-eye distortion. By now I have two concerns:…
masih
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Is there a way to remove GoPro fisheye using ffmpeg

It seems possible to compensate the fisheye distortion using ffmpeg thanks to the lenscorrection filter: ffmpeg -i in.mp4 -vf "lenscorrection=cx=0.5:cy=0.5:k1=-.25:k2=-.25" out.mp4 What values for k1 and k2, particularly for a gopro? Is there a way…
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Is there a fisheye or dual fisheye to equirectangular filter for ffmpeg?

Or a way to do it with an existing filter? So that you could take in video from a fisheye or dual fisheye camera (such as the Ricoh Theta) and directly output equirectangular, in real-time, to something like RTMP?
Dan Pisarski
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OpenCV fisheye calibration cuts too much of the resulting image

I am using OpenCV to calibrate images taken using cameras with fish-eye lenses. The functions I am using are: findChessboardCorners(...); to find the corners of the calibration pattern. cornerSubPix(...); to refine the found…
NoShadowKick
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C++ algorithm to convert a fisheye image to an equirectangular image with OpenCV4

I want to create a C++ code with the OpenCV4 library that convert a fisheye image to an equirectangular image. I'm using as a test a fisheye image of 1400*1400 pixels loading from a file on my Computer: The build works well but when I try to…
KenZone51
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How to simulate fisheye lens effect by openCV?

I am looking for ways to create fisheye lens effect, looked at documentations for openCV, it looks like it contains Camera Calibration functions for radial distortions like fisheye. Is it possible to simulate fisheye distortion by openCV? If it is…
0pcl
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Three.js - Fisheye effect

So, I've messed around with three.js, works out great. The only thing I can't figure out, is how to make a camera with a real fisheye effect. How is that possible? camera.setLens()?
MrQuiw
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Getting Zend_Navigation menu to work with jQuery's Fisheye

I'm using Zend_Navigation (sweet addition to the framework, btw) to build my menu, after which it should be rendered in the page (self-evidently). I first set the container somewhere in the controller: // $pages is the array containing all page…
JorenB
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Convert dual fisheye video to equirectangular

I used open framework to convert dual fisheye video (received from ricoh theta S camera) to equirectangular format (for an iOS application). dual fisheye image sample: equirectangular image sample: I use below shader: equirectangular.frag //…
Nhat Dinh
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Barrel distortion correction algorithm to correct FishEye lens - failing to implement with Java

I have a large bulk of photographs taken with a fisheye lens. As I want to do some image-processing (e.g. edge detection) on the photos I want to remove the barrel distortion which effects my results heavily. After some research and lots of read…
Lucas
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how to modify bitmapmesh sample to include fisheye effect?

I've some sample code that comes with Android that distorts a bitmap image(Bitmapmesh.java). I'm wanting a circle placed on my image that gives a fisheye effect. I'm new to android and especially graphics, is it possible to create this effect in the…
turtleboy
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Camera lens distortion in OpenGL

I'm trying to simulate lens distortion effect for my SLAM project. A scanned color 3D point cloud is already given and loaded in OpenGL. What I'm trying to do is render 2D scene at a given pose and do some visual odometry between the real image…
Chanoh Park
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How to create a fisheye effect with PHP GD

Is there a way to do a FishEye (or Barrel transformation) effect on a image with PHP-GD? I found this with some code, but I have a hard time porting it to PHP. How can I implement a fisheye lens effect (barrel transformation) in MATLAB?
Daantje
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How to convert a fisheye image to 5 or 6 cubic image

I want to unwarp a 2D fisheye image to a 3d cube.So I thought it is necessary to unwarp the fisheye image to 6 cubic image and remap 6 cubic image to the 3d cube.And Now I am confused about the first step and can't find some specific paper and code…
user2968731
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circular fisheye distortion rotated 270 deg clocwise or 90 deg anticlockwise before distorted?

I've an app that distorts a circle on a bitmap with a fisheye distortion. the circle seems to be rotated 180 deg as well as distorted. Any ideas? there's no clue to me as to why in the filter class. thanks Matt. import…
turtleboy
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