Forum: Poser - OFFICIAL


Subject: Far and Near Illusion

radstorm opened this issue on Sep 13, 2008 · 7 posts


radstorm posted Sat, 13 September 2008 at 5:15 PM

Hi All. How would one make a model or character appear to be approaching from a distance? What I mean as in real world scenarios, an abject appears to get larger as it gets closer.

I would like to Green Screen maybe Daz V4 or the CP (Jess, Miki, etc) characters and drop them into another background and make them appear to be in the scene.

The reason being,  by using an AVI movie editor that supports screen in screen I can really cut back on render time :)

Thanks;;


IDonn0 posted Sun, 14 September 2008 at 12:14 AM

Your doin a video composite?  Is the character going to be animated or still?  By using other elements of the scene you can determine size and lighting.  Some video editing software utilizes 3d native so no rendering in Poser at all.  I need more info though to be of help.

Don


radstorm posted Sun, 14 September 2008 at 9:24 AM

Hi Don, well what I am saying is place the character in empty space and I guess set up a walk path. I tried that earlier but it just appears that my character is just walking in place in the straight ahead view, not advancing forward. Would this be a matter of adjusting camera?

I would create path, animate the prop using the path, make the bg a solid color and then of course save it in avi format. After that use an avi editor and blend it with another movie backdrop. But an example would be perhaps a person exiting out of a building and walking down a sidewalk until the go off the screen right to left etc.

This does not have to be honed to perfection yet, just to dabble. So I dont plan spending a bunch of money on pricey programs for a 5 second video :)


Santel posted Sun, 14 September 2008 at 10:15 AM

Hi, if you really want this to be believable, you need to consider camera matching using some form of camera tracking as well as matching lights precisely and replacing any foreground objects (if any) with 3d versions in your 3d render. That's the procedures often described in Q&A articles in 3dWorld magazine. Not only should you match the camera position but also the focal length.  Also lookup rotoscoping if you aren''t already familiar with this.

Regards...


wyrwulf posted Sun, 14 September 2008 at 10:42 AM

Set up a walk path, then set up Walk Designer, click "Apply", and make sure "Follow Path" is clicked. I did this in Poser4, but Poser7 is similar.

IDonn0 posted Sun, 14 September 2008 at 12:27 PM

Quote - Hi Don, well what I am saying is place the character in empty space and I guess set up a walk path. I tried that earlier but it just appears that my character is just walking in place in the straight ahead view, not advancing forward. Would this be a matter of adjusting camera?

I would create path, animate the prop using the path, make the bg a solid color and then of course save it in avi format. After that use an avi editor and blend it with another movie backdrop. But an example would be perhaps a person exiting out of a building and walking down a sidewalk until the go off the screen right to left etc.

This does not have to be honed to perfection yet, just to dabble. So I dont plan spending a bunch of money on pricey programs for a 5 second video :)

Ok I gotcha now.  In movie render settings you have an option to render and image sequence.  Use this and render to .png format with no background defined and you'll end up with just your character in your scene (transperent background).  A simple way to get your path right would be to load a single frame from your video into the back ground and match your character to that.  Then move the animation forward to your last frame (for a 3 second video at 30 fps that would be frame 91) Now you can see where your character needs to be at the paths end.  Create your path to match the background image, remove the background and render to an image sequence.

Don


radstorm posted Sun, 14 September 2008 at 5:45 PM

Great! Thank you all for the input on this subject. I think now with this info, I might just have some success.

wyrwulf, yes that is something similar to what I wish to do also. I am only up to Poser 6, but I am sure if 4 can do it, so can 5 or 6 which I have purchased all 3...so far..still eyeing 7 :) ..thanks for the visual.

I am gonna do a "save page as"  of this one for future reference :)