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MarianoJT88 / PD-Flow

Real-time scene flow algorithm for RGB-D cameras
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Equation (1) deduction #10

Open Yzichen opened 5 years ago

Yzichen commented 5 years ago

Hi， I am a beginner . May I ask a silly question? How did Equation (1) deduct directly from the well-known”pin-hole model”，If you have time, can you send the derivation process? Or you can send it to my mailbox : zichen.yu0730@gmail.com.

Best wishes Yu

Yzichen commented 5 years ago

I've deduced it several times, but it's not the same as what you wrote in your paper.Forgive me for asking you such a simple question.

Yzichen commented 5 years ago

Did anyone else see it? Help me.

MarianoJT88 commented 5 years ago

That should be a standard projection model. Read https://courses.cs.washington.edu/courses/cse455/09wi/Lects/lect5.pdf

or any other similar lecture / book chapter to get a better understanding.

Mariano

Yzichen commented 5 years ago

I derive it according to the projection relationship between camera coordinate system and image coordinate system，But the result are always somewhat different from those in the paper...I am too stupid..

Yzichen commented 5 years ago

Hi,Mariano Jaimez I am a graduate student in China, studying your paper. I have watched the video about your paper, and the effect is very great.However, I have some questions about the correspondence between scene flow and optical flow.Here's how I derive it. I first derived the scene flow to optical flow mapping matrix,and then took the inverse of it.But the results are not quite consistent with those of your paper.Can you check to see if my derivation is correct? In addition, I have some other questions about optical flow and scene flow estimation. May I ask for other contact information of you?Better yet, some kind of instant messaging app to facilitate communication. Best Wishes Zichen Yu

[image: image.png]

Mariano Jaimez Tarifa notifications@github.com 於 2019年9月1日 週日 下午9:45寫道：

That should be a standard projection model. Read https://courses.cs.washington.edu/courses/cse455/09wi/Lects/lect5.pdf

or any other similar lecture / book chapter to get a better understanding.

Mariano

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/MarianoJT88/PD-Flow/issues/10?email_source=notifications&email_token=ANALTXNZ2LWAJMZTQPEAP7LQHPBPBA5CNFSM4IQDL2AKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD5UCWFQ#issuecomment-526920470, or mute the thread https://github.com/notifications/unsubscribe-auth/ANALTXLADCZ2BARH3YZID73QHPBPBANCNFSM4IQDL2AA .

Yzichen commented 5 years ago

The image can‘t see here , I send it by email.

MarianoJT88 commented 5 years ago

My email is mjaimezt_mjt@hotmail.com. But honestly, I cannot spend much time on this, if you have concise questions I will try to answer them.

Yzichen commented 5 years ago

My rgbd camera can't run this program, can Kinect 2 please?

MarianoJT88 commented 5 years ago

I don't think it works with Kinect 2 (unless somebody added a function to load RGB-D images from Kinect 2). It should be easy to generalize to Kinect 2 if you know how to read images from it already.