Using a homography matrix and decomposing it to find the orientation of a plane fixed in the centre
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I currently have two images of a plane in real life from straight above. One to use as a reference image, and another when the plane has undergone a rotation fixed at the centre of the plane thus changing its orientation. The camera stays at a constant position.
I was wondering if I found the homography matrix of this rotation in opencv and then decomposed the homography matrix in order to find the rotation matrix whether this would yield accurate results and I would be able to find the three angles needed to describe the planes rotation in euclidean coordinates to a reasonable degree of accuracy.
Thanks
image opencv homography
asked Nov 21 at 13:14
azz
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I currently have two images of a plane in real life from straight above. One to use as a reference image, and another when the plane has undergone a rotation fixed at the centre of the plane thus changing its orientation. The camera stays at a constant position.
I was wondering if I found the homography matrix of this rotation in opencv and then decomposed the homography matrix in order to find the rotation matrix whether this would yield accurate results and I would be able to find the three angles needed to describe the planes rotation in euclidean coordinates to a reasonable degree of accuracy.
Thanks
image opencv homography
asked Nov 21 at 13:14
azz
1
New contributor
azz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
do you mean like decomposeHomographyMat function?
– api55
Nov 21 at 13:57
yes i was just wondering whether that yields in accurate results when used in real life images
– azz
Nov 21 at 18:35
the accuracy depends more on the homography calculation than the decomposition of it
– api55
Nov 21 at 18:42
that makes a lot of sense, am i right in assuming then that if i am just changing the orientation of one plane with easy to detect features fixed at the centre the homography calculation can be accurately done using opencv
– azz
Nov 21 at 19:31
depends on the image, not always is perfect, however if your features are good and numerous you have will get quite accurate results
– api55
Nov 21 at 20:11
|
show 1 more comment
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I currently have two images of a plane in real life from straight above. One to use as a reference image, and another when the plane has undergone a rotation fixed at the centre of the plane thus changing its orientation. The camera stays at a constant position.
I was wondering if I found the homography matrix of this rotation in opencv and then decomposed the homography matrix in order to find the rotation matrix whether this would yield accurate results and I would be able to find the three angles needed to describe the planes rotation in euclidean coordinates to a reasonable degree of accuracy.
Thanks
image opencv homography
asked Nov 21 at 13:14
azz
1
New contributor
azz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I currently have two images of a plane in real life from straight above. One to use as a reference image, and another when the plane has undergone a rotation fixed at the centre of the plane thus changing its orientation. The camera stays at a constant position.
I was wondering if I found the homography matrix of this rotation in opencv and then decomposed the homography matrix in order to find the rotation matrix whether this would yield accurate results and I would be able to find the three angles needed to describe the planes rotation in euclidean coordinates to a reasonable degree of accuracy.
Thanks
image opencv homography
image opencv homography
asked Nov 21 at 13:14
azz
1
New contributor
azz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Nov 21 at 13:14
azz
1
New contributor
azz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Nov 21 at 13:14
azz
1
New contributor
azz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Nov 21 at 13:14
azz
1
asked Nov 21 at 13:14
azz
1
1
New contributor
azz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
azz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
azz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
do you mean like decomposeHomographyMat function?
– api55
Nov 21 at 13:57
yes i was just wondering whether that yields in accurate results when used in real life images
– azz
Nov 21 at 18:35
the accuracy depends more on the homography calculation than the decomposition of it
– api55
Nov 21 at 18:42
that makes a lot of sense, am i right in assuming then that if i am just changing the orientation of one plane with easy to detect features fixed at the centre the homography calculation can be accurately done using opencv
– azz
Nov 21 at 19:31
depends on the image, not always is perfect, however if your features are good and numerous you have will get quite accurate results
– api55
Nov 21 at 20:11
|
show 1 more comment
do you mean like decomposeHomographyMat function?
– api55
Nov 21 at 13:57
yes i was just wondering whether that yields in accurate results when used in real life images
– azz
Nov 21 at 18:35
the accuracy depends more on the homography calculation than the decomposition of it
– api55
Nov 21 at 18:42
that makes a lot of sense, am i right in assuming then that if i am just changing the orientation of one plane with easy to detect features fixed at the centre the homography calculation can be accurately done using opencv
– azz
Nov 21 at 19:31
depends on the image, not always is perfect, however if your features are good and numerous you have will get quite accurate results
– api55
Nov 21 at 20:11
do you mean like decomposeHomographyMat function?
– api55
Nov 21 at 13:57
do you mean like decomposeHomographyMat function?
– api55
Nov 21 at 13:57
yes i was just wondering whether that yields in accurate results when used in real life images
– azz
Nov 21 at 18:35
yes i was just wondering whether that yields in accurate results when used in real life images
– azz
Nov 21 at 18:35
the accuracy depends more on the homography calculation than the decomposition of it
– api55
Nov 21 at 18:42
the accuracy depends more on the homography calculation than the decomposition of it
– api55
Nov 21 at 18:42
that makes a lot of sense, am i right in assuming then that if i am just changing the orientation of one plane with easy to detect features fixed at the centre the homography calculation can be accurately done using opencv
– azz
Nov 21 at 19:31
that makes a lot of sense, am i right in assuming then that if i am just changing the orientation of one plane with easy to detect features fixed at the centre the homography calculation can be accurately done using opencv
– azz
Nov 21 at 19:31
depends on the image, not always is perfect, however if your features are good and numerous you have will get quite accurate results
– api55
Nov 21 at 20:11
depends on the image, not always is perfect, however if your features are good and numerous you have will get quite accurate results
– api55
Nov 21 at 20:11
|
show 1 more comment
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azz is a new contributor. Be nice, and check out our Code of Conduct.
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do you mean like decomposeHomographyMat function?
– api55
Nov 21 at 13:57
yes i was just wondering whether that yields in accurate results when used in real life images
– azz
Nov 21 at 18:35
the accuracy depends more on the homography calculation than the decomposition of it
– api55
Nov 21 at 18:42
that makes a lot of sense, am i right in assuming then that if i am just changing the orientation of one plane with easy to detect features fixed at the centre the homography calculation can be accurately done using opencv
– azz
Nov 21 at 19:31
depends on the image, not always is perfect, however if your features are good and numerous you have will get quite accurate results
– api55
Nov 21 at 20:11