Forum: Poser - OFFICIAL


Subject: IS it possible to render an image with the background transparent?

Virum opened this issue on Feb 26, 2003 ยท 11 posts


Virum posted Wed, 26 February 2003 at 10:43 AM

Is it possible to render an image with the background transparent IN POSER 4? When you are making an animation, it gets real tedious taking out the hot pink bg for every frame.


lynnJonathan posted Wed, 26 February 2003 at 11:15 AM

Not sure what you are asking? Pink background? If you are trying to composite in a video program do your AVIs with no compression and you'll have a nice alpha channel or render to pics as a psd or tiff. If your on a mac with quicktime then use animation codec with millions+. Alpha channels can save a lot of work!


Virum posted Wed, 26 February 2003 at 11:23 AM

I'm a programmer. I want a charactar to walk on the screen. So I am saving all the images in a walking animation as PSDs. However, I have to choose what I want to render it on. In Poser 4 I have two options: background color, or black. No transparent option. So I have been rendering it on hot pink, then editing it, and then saving it in a different file format. It would be som much easier if i could render it on a transparent background....


evilded777 posted Wed, 26 February 2003 at 11:31 AM

You're right there is no transparent option... but if you are rendering to PSD, there should be an alpha channel in each picture... basically a mask that will allow you to delete the background in about 2 mouse clicks... e.d. PS when I open my renders in Fireworks, the background is already transparent... that's just how it reads the alpha information.


Virum posted Wed, 26 February 2003 at 11:40 AM

What I have been doing is using the magic wand and deleting the background, is that what you mean? I mean, it works, it just takes a while because I am saving as a gif, so I have to get rid of all the pink on the outside....


barb posted Wed, 26 February 2003 at 11:44 AM

All you have to do, thoough, even if you save as tif and or PSD is open it in a paint program and load the alpha channel - in Painter this would be under the select menu in PhotoPaint under the mask menu. Load the mask (alpha 1) and copy - the image can then be pasted as new and there will be no bakgrd.


Virum posted Wed, 26 February 2003 at 11:50 AM

I'm so confused. COuld someone give me instructions on how to do whatever barb and evilded is saying in Photoshop 7.0 Note, I can't have a full alpha channel....I can only have full transparency in the image when I save it.


visque posted Wed, 26 February 2003 at 12:29 PM

Virum, Check the Layers/Channel/Path area. Click on the channel tab and your alpha channel should be down at the bottom. CTRL-click on the alpha and it should select all that is not transparent. Let me know if this helps. Visque


Quoll posted Wed, 26 February 2003 at 1:13 PM

An even easier way to do this is to open your rendered animation in a video editing or compositing program and just key out the background color. Done. Then you don't have to fiddle with it frame by frame. It's often better to render using a green or blue, but you can have good results with many different colors, all depending upon what colors are in your "safe" area. There are many programs that can do this. Premier, Final Cut Pro, After FX, just to name a few.


FrankJann posted Wed, 26 February 2003 at 1:17 PM

From inside Photoshop, when you have an image loaded, simply look down at the Layers palette on the lower right hand side of your screen (in default Photoshop setup). You might need to first convert your layer from Background to an actual layer. You can do this by double clicking on it and accepting the box that pops up. After that, just hover your mouse over the layer in your layers palette, hold down the control key on your keyboard, and click. That will load the alpha channel as a selection. You might need to invert it before you delete it, but it should be as simple as that. If your figure disappears when you hit delete, just invert the selection before you hit delete by going to the Selection menu (I think) and choosing select inverse (you might need to look up invert selections in help file if I'm mistaken on the menu). Should be as simple as that. Frank P.S. - If you need to do the same thing over and over to a bunch of files, look into creating an Action that will automatically do this for you. You could possibly also create a Droplet which will automatically run a procedure on a folder of files.


Virum posted Thu, 27 February 2003 at 11:49 AM

Thanks guys.....I'll have to pick up premiere one of these days