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Added camera calibration sample for android#1070

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opencv-pushbot merged 1 commit intoopencv:2.4from
Daniil-Osokin:calibrationSampleAndroid
Jul 30, 2013
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Added camera calibration sample for android#1070
opencv-pushbot merged 1 commit intoopencv:2.4from
Daniil-Osokin:calibrationSampleAndroid

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@Daniil-Osokin
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@Daniil-Osokin Daniil-Osokin commented Jul 1, 2013

Added camera calibration sample for android. It is useful for pinhole cameras. Sample based on "Camera calibration With OpenCV" tutorial (http://docs.opencv.org/trunk/doc/tutorials/calib3d/camera_calibration/camera_calibration.html). It uses standard OpenCV asymmetric circles grid patern 11x4 (https://github.com/Itseez/opencv/blob/2.4/doc/acircles_pattern.png). The results are the camera matrix and 5 distortion coefficients.

When pattern is recognized it's highlighted. Tap on highlighted pattern, to capture pattern corners for calibration. When you've captured necessary amount of pattern corners, press "Calibrate" button for performing camera calibration. Results are logged in current version.

Going to add next features:

  1. Display calibration error and save calibration results.
  2. Show undistorted preview.
  3. Show comparison real/undistorted view: half screen for every.
  4. Add help with description of calibration process and tips.

@ghost ghost assigned asmorkalov Jul 2, 2013
@kirill-korniakov
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kirill-korniakov commented Jul 2, 2013

Alexander, could you please check it? We can also ask Ivan to try it if you want.

@mdim
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mdim commented Jul 2, 2013

@asmorkalov could you please review this PR?

asmorkalov
asmorkalov reviewed Jul 2, 2013
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...es/android/camera-calibration/src/org/opencv/samples/cameracalibration/CameraCalibrator.java Outdated
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@asmorkalov asmorkalov Jul 2, 2013

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Fix formatting here.

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@Daniil-Osokin Daniil-Osokin Jul 2, 2013

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Ok, thanks. Will update.

@SeninAndrew
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SeninAndrew commented Jul 17, 2013

@Daniil-Osokin Daniil, just wanted to make sure you don't forget about this PR which is 2 weeks old at the moment. Are you planning to send a fix?

@Daniil-Osokin
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Daniil-Osokin commented Jul 17, 2013

@SeninAndrew Thanks, I was on vacation these days, but now I'm working on it.

@asmorkalov
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asmorkalov commented Jul 30, 2013

Cool sample! It can be useful as base for other applications! :shipit:

apavlenko pushed a commit that referenced this pull request Jul 30, 2013
Merge pull request #1070 from Daniil-Osokin:calibrationSampleAndroid
646e817
@opencv-pushbot opencv-pushbot merged commit 23c802b into opencv:2.4 Jul 30, 2013
@SpecLad SpecLad mentioned this pull request Aug 6, 2013
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cbodenst commented Oct 2, 2013

Hi,
i tried to open the project in eclipse and run it on my phone, but eclipse said me that the gen folder is missing.
How can i fix this or can u give me a link to the apk?
Using Windows 8 x64.

@Daniil-Osokin Daniil-Osokin deleted the calibrationSampleAndroid branch October 2, 2013 09:29
@Daniil-Osokin
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Daniil-Osokin commented Oct 2, 2013

@Crossfire75 Just create a new android project in eclipse, copy & past sample's code, and run it in your device. Better place to ask such things is OpenCV's Q&A site: www.answers.opencv.org.

@VineetTambe
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VineetTambe commented Jun 3, 2021

Hey, I am is there example out there for camera calibration using chessboard pattern?

savuor pushed a commit to nickyu-zhu/opencv that referenced this pull request Oct 27, 2023
@asmorkalov
Merge pull request opencv#1070 from dkurt:tf_half_pixel_for_nn
fdd66bf 
Test data for half pixel NN resize from ONNX
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@Daniil-Osokin @kirill-korniakov @mdim @SeninAndrew @asmorkalov @cbodenst @VineetTambe @sara1010 @opencv-pushbot