Focal length from calibration parameters

asked 2019-03-14 20:29:42 -0500

I am triying to calibrate my camera(web cam) using opencv. And I use findchessboard function, when i get parameter list always diffierent list

i totally try 6 times test, there are calibrate list

1.

|672,0,320|

|0,481,240|

|0, 0, 1 |

2.

|710,0,320|

|0,432,240|

|0, 0, 1 |

3.

|872,0,320|

|0,462,240|

|0, 0, 1 |

4.

|951,0,320|

|0,601,240|

|0, 0, 1 |

5.

|603,0,320|

|0,434,240|

|0, 0, 1 |

6.

|690,0,320|

|0,423,240|

|0, 0, 1 |

I think focal lengtn(f_x, f_y) is Unique value so always get same value.....maybe is my idea wrong? and i think principal points(c_x, c_y) are value of my image(value of my imshow size). this is right idea? help me....

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Comments

how exactly are you doing the calibration ? what is the the rms from that ?

as long as your results differ that much, you're probably doing something wrong there

berak gravatar imageberak ( 2019-03-15 03:17:26 -0500 )edit

I think so...can you help me ?

there is my git and that is my src...can you check?

if possible I'd appreciate your help

https://github.com/jack7141/Calibrati...

jack7141 gravatar imagejack7141 ( 2019-03-15 03:39:41 -0500 )edit