to find the width and height of an rectangular object Image
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Hi Friends, I am working on one Image processing application and getting the Image of the object on the monitor using the CCD camera. My task is to find out the actual width and height of an object(object is rectangular in shape). But the practical problem I am facing is how to corelate the actual size of the object with the Image on the monitor. One more critical thing is I need the accuracy in mm. The Image that comes on the screen is not in 1:1 proportion with the actual object. Please help if anybody allready worked on such kind of task. Regards, -Dinesh
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Hi Friends, I am working on one Image processing application and getting the Image of the object on the monitor using the CCD camera. My task is to find out the actual width and height of an object(object is rectangular in shape). But the practical problem I am facing is how to corelate the actual size of the object with the Image on the monitor. One more critical thing is I need the accuracy in mm. The Image that comes on the screen is not in 1:1 proportion with the actual object. Please help if anybody allready worked on such kind of task. Regards, -Dinesh
That is ludicrous, it can't be done. How can you hope to take a bunch of pixels, work out from that how far an object was from the camera, and then work out the size to mm accuracy ?
Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog
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That is ludicrous, it can't be done. How can you hope to take a bunch of pixels, work out from that how far an object was from the camera, and then work out the size to mm accuracy ?
Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog
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Hi Friends, I am working on one Image processing application and getting the Image of the object on the monitor using the CCD camera. My task is to find out the actual width and height of an object(object is rectangular in shape). But the practical problem I am facing is how to corelate the actual size of the object with the Image on the monitor. One more critical thing is I need the accuracy in mm. The Image that comes on the screen is not in 1:1 proportion with the actual object. Please help if anybody allready worked on such kind of task. Regards, -Dinesh
What you need is a graduated measuring rod, e.g. something that you know the size of and that will be recorded at the same time by the camera. Another solution is to have the distance between your rectangle and the camera be always the same, and have a calibration run to set up the ratio before you start monitoring.
~RaGE();
I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus
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Hi Friends, I am working on one Image processing application and getting the Image of the object on the monitor using the CCD camera. My task is to find out the actual width and height of an object(object is rectangular in shape). But the practical problem I am facing is how to corelate the actual size of the object with the Image on the monitor. One more critical thing is I need the accuracy in mm. The Image that comes on the screen is not in 1:1 proportion with the actual object. Please help if anybody allready worked on such kind of task. Regards, -Dinesh
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What you need is a graduated measuring rod, e.g. something that you know the size of and that will be recorded at the same time by the camera. Another solution is to have the distance between your rectangle and the camera be always the same, and have a calibration run to set up the ratio before you start monitoring.
~RaGE();
I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus
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when you have finished this project the Nobel Prize is garanteed to be awarded to you. good luck :)
G_S
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G_S wrote:
Nobel Prize
I actually wrote a software doing this with a colleague during my study. Where's the Prize ? :)
~RaGE();
I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus
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Christian Graus wrote:
size to mm accuracy
He did not tell how accurate the camera is.
~RaGE();
I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus
Well, regardless, if the rectangle is something moving through the scene, how does he know how close to the camera it was ?
Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog