homogeneous points
in [Matlab]
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From: chee ali on 1 Jan 2010 10:07 hi,i want 2 ask somthing about homography.i want to calculate homography matrix H,the equation is x’=Hx. x’ is 3xN set of homogeneous points,now i am not getting the point that how to calculate this 3xN set of homogeneous points. please give me some idea.i hope you ill rep.
From: Jan Simon on 1 Jan 2010 11:05 Dear chee ali! > hi,i want 2 ask somthing about homography.i want to calculate homography matrix H,the equation is x’=Hx. > x’ is 3xN set of homogeneous points,now i am not getting the point that how to calculate this 3xN set of homogeneous points. I don't get what you want to calculate: The homography matrix or the homogenous points? Have you read this: http://en.wikipedia.org/wiki/Homography ? Good luck, Jan
From: chee ali on 3 Jan 2010 13:30 "Jan Simon" <matlab.THIS_YEAR(a)nMINUSsimon.de> wrote in message <hhl6fg$f1a$1(a)fred.mathworks.com>... > Dear chee ali! > > > hi,i want 2 ask somthing about homography.i want to calculate homography matrix H,the equation is x’=Hx. > > x’ is 3xN set of homogeneous points,now i am not getting the point that how to calculate this 3xN set of homogeneous points. > > I don't get what you want to calculate: The homography matrix or the homogenous points? > > Have you read this: http://en.wikipedia.org/wiki/Homography ? > > Good luck, Jan yes i have read it.and i want to calculate the homogeneous points in matlab.
From: Jan Simon on 3 Jan 2010 15:39 Dear Chee! > > > hi,i want 2 ask somthing about homography.i want to calculate homography matrix H,the equation is x’=Hx. > > > x’ is 3xN set of homogeneous points,now i am not getting the point that how to calculate this 3xN set of homogeneous points. > > > > I don't get what you want to calculate: The homography matrix or the homogenous points? > > > > Have you read this: http://en.wikipedia.org/wiki/Homography ? > > > > Good luck, Jan > > yes i have read it.and i want to calculate the homogeneous points in matlab. Ok. Do I understand correctly: you have H and x and want x' ?! x2 = H * x; Does this help?! Or do you want x and have x' ?! Then inspect: help slash Kind regards, Jan
From: chee ali on 3 Jan 2010 18:29
"Jan Simon" <matlab.THIS_YEAR(a)nMINUSsimon.de> wrote in message <hhqv97$o6u$1(a)fred.mathworks.com>... > Dear Chee! > > > > > hi,i want 2 ask somthing about homography.i want to calculate homography matrix H,the equation is x’=Hx. > > > > x’ is 3xN set of homogeneous points,now i am not getting the point that how to calculate this 3xN set of homogeneous points. > > > > > > I don't get what you want to calculate: The homography matrix or the homogenous points? > > > > > > Have you read this: http://en.wikipedia.org/wiki/Homography ? > > > > > > Good luck, Jan > > > > yes i have read it.and i want to calculate the homogeneous points in matlab. > > Ok. Do I understand correctly: you have H and x and want x' ?! > x2 = H * x; > Does this help?! Or do you want x and have x' ?! Then inspect: > help slash > Kind regards, Jan i want to calculate x right.calculation of H is next step.but right now i want to calculate homogeneous point x.and this x is a 3xn matrix. i have NO idea that how to calculate homogeneous point x. |