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ymeillier · Joined: 03 Jan 2008 Posts: 34

Hi.
I'm just getting started discovering syntheyes working through the manual.
I was happy to read about this feature for lens distortion correction where apparently, you matchmove the lens distorted footage and syntheyes will change distortion correction models as it solves until it gets the best RMS?

Is this how it works? Really? that's crazy..

I have this footage that has a nasty mustache type of lens distortion. Impossible to correct using straight lines detection as the shot itself does not have much to detect to begin with. Even using other applications which are capable of correcting high order lens distortion. Plus there is a zoom in the shot so distortion is variable.... arghhhh!!

I now hope syntheyes will solve the shot better than other applications do. They have trouble doing so because they want you to feed them an undistorted shot. I get semi decent solution but the distortion is killing me.

Just a question though. The shot is PAL anamorphic. Should i resize the footage to remove the anamorphic squeeze before feeding it to syntheyes or it does not matter for the matchmove?

thanks.

- anonymous future proud owner of syntheyes.

kenekeu · Joined: 18 Jul 2007 Posts: 53 Location: Spokane, WA

I would assume that an anamorphic squeeze would make it completely impossible to get an accurate correction for lens distortion since the distortion value of the lens would its self be distorted. I would definitely remove the anamorphic squeeze and try again.

LFGabel · Posted: Fri Jan 04, 2008 5:30 am Post subject:

I seem to remember that Anamorphic Squeeze didn't seem to matter, but you'd be better off unsqueezing it. Then let SynthEyes try and calculate it from the tracked data.

ymeillier · Joined: 03 Jan 2008 Posts: 34

hi.
thanks for the replies.

Am still learning syntheyes and have a question.
So this footage is PAL anamorphic
So 720x576

To track it and correct for the anamorphic squeeze is it the same to
1) import the 720x576 footage and then set the anamorphic squeeze correction to 1.4222
and
2) resize the footage to 1024x576 and then track that.

1) and 2) are the same right?

thanks.

LFGabel · Posted: Sun Jan 06, 2008 6:08 pm Post subject:

You can set the pixel aspect ratio in SynthEyes and just start tracking. I've done that before.

ymeillier · Joined: 03 Jan 2008 Posts: 34

Thanks.
I love syntheyes for many unique features it has. This solving for lens distortion during 3d solve is one of them. buying it today...