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2015-06-26 02:46:53 -0500 commented question corner detection accurately

Thank you for the fast response and also the suggestions for the -corners i will be trying to implement the compression algorithm suggested by you it might work out to be the way but as pointed out by you i have to check for the noise -coming to camera calibration the chess board example is good but there is a limitation in my environment as i pointed out in my problem, the entire setup of the camera and the object is small (30mmx30mm box) so how can i use chess board in this small setup or is that i am missing out something here

thank you once again for helping me move forward in the project

2015-06-25 10:27:49 -0500 received badge  Editor (source)
2015-06-25 10:27:20 -0500 asked a question corner detection accurately

I need help in my current project in which i am stuck up in one of the module.I have image from which i am required to get the dimensions of the object that too accurately as from these dimensions i would have to point out the faults in the structure of the object.

These are the problems that i am looking solution for

1.i am required to get the corners of the object in image that i have attached.( To make it clear i have rounded the corners that i want).

I have tried out harris corner algorithm,Approx poly and few other solutions that i could find out in the net but none of the methods brought me close to the required result (few things that i have tried out "

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2.I am having a turntable type setup for capturing the object image using single camera.i am looking for suggestion for the best possible way to calibrate the camera accurately as my current setup is small which is placed in 30mmx30mm box

3.i have structure of the ideal object , i have to compare that to various other objects and accurately point out the faults in the dimensions and angles of the examined object compared to the ideal object.

Please do excuse me for asking all my problems in one place but all of them are interrelated so i had to put it together

I am new to this so please do help me.I am looking for guidance and ways to proceed as i have gone out of ideas. sample image