It’s been a while since I’ve updated you guys. A lot of goings ons in the Graphics world as of late. To get back into the swing of things I’m posting this tutorial on Fixing 32bpc Aliasing. Working in 32bpc has its advantages as well as gotchas you’ve got to watch out for. Sometimes aliasing or jagginess can enter into your composition when using colors that go beyond 1.0 in the channel values. *Watch the tutorial below.
*I apologize in advance for the occasional sound issue.
As requested by users, the Duplicate with Connections script has been updated to include using the property index while still using the layer name in the expressions. It can be downloaded at AEScripts + AEplugins. This update provides separate dialogs for using property indices and layer indices versus using property names and layer names.
The Duplicate with Connections script has been updated and be downloaded at AEScripts + AEplugins. This update adds an option to use the property index instead of the property name. This can be useful in which multiple properties may have the same name and therefore can confuse the expressions engine. I understand this could be of help with those of you using expressions in Element.
In other news, I have to apologize for the lack of communication for a while. It’s been a busy few months at work and with a new baby at home! But I’ve got a video tutorial I am working on and an update for the Pixel Cloud plugin as well as a brand new plugin on the horizon!
More and more, I am using Pixel Cloud as a visualization tool. Although, I may not have the need to relight a 3D render, I am compositing it with another pass or a background. In order to make sure the composite works, it helps to visualize how it may look within a 3D space. Pixel Cloud can help with that. Last night, I was experimenting with outputting a PPass and a Normal Pass as a UV texture from within Maya. Using this technique, you can create a point cloud not just from the view of the camera, but from all textured points on the model. Maya’s Batch Bake function allows you to do this, with it’s support for baking 32-bit texture maps. Although you cannot create image sequences in this way, you can create a working reference of the CG model from all angles. This reference could be useful when visualizing a composite.
The application of this technique is quite simple. Create and texture your position pass as normal and use Batch Bake t0 create 32-bit floating point tiffs for each pass. You need to make sure that UVs are completely unfolded and not flipped, otherwise the command may not work. Also set your options to output 32-bit. Import into After Effects and use these passes with Pixel Cloud as you normally would.
Creating the PPass texture in Maya will be the same as connecting the samplerInfo node’s pointWorld with the outColor of a surface shader. Creating the Normal Pass is a little different. One needs to connect the samplerInfo’s normalCamera to a vector product node. Then connect the rendering camera’s worldMatrix to the vector product node. Set the vector product node to matrix multiply and connect the output to the outColor of the surface shader. You can then use Batch Bake to create the texture map/passes. These were my settings.
Hey guys, this tutorial is a brief overview on how to use Maya to quickly create a position pass and normal pass to be used with the Pixel Cloud plugin for After Effects. The process is pretty much the same as in my previous tutorials but this is dedicated to exporting the passes from Maya and the adjustments necessary after importing into After Effects.
On a side note, I’ve started setting up a Forum for any questions regarding Pixel Cloud, Scripts and even just general graphics talk! If you have any technical questions please feel free to post here and for my customers feel free to email me at firstname.lastname@example.org I’ll get back to you! The forum is still in the beta stages but feel free to start using it!
The Pixel Cloud plugin for After Effects is a powerful compositing tool that allows you to relight a 3D generated image, make 3D aware selections or displace the pixels in 3D space. Combine the use of a Position Pass and a Normal Pass with the power of After Effects’ 3D lights and cameras and change the lighting of your composited 3D graphics. This native plugin for After Effects can use the coordinate information from a Position Pass or depth map to generate a Pixel Cloud in 3D space. This Pixel Cloud can be viewed from all angles using AE’s own cameras. With a Normal Pass, the Pixel Cloud can be relit using After Effects’ own lights or using an image as an Image Based Light. There are a number of uses from 3D compositing to motion graphics! Find it at AEScripts.com!
Relighting with 32-bit passes
Use AE Lights and Cameras
Image Based Lighting
Alpha Lights for matte generation
Support for falloff in CS5.5 and above
Pixel Cloud generation with 8bpc to 32bpc
Lo-res Preview modes
Generating the position pass can be done in various 3D software packages. In Cinema 4D you may use the PointPosition C4D from AEScripts.com. There is also a tutorial for doing this here: http://youtu.be/yfoT7bxbBwo
For Maya, you may use the Point World output of a samplerInfo node connected to a surface shader and render an EXR using mental ray and the 32-bit framebuffer. There are also a variety of tutorials available.
For 3DS Max, you may add the XYZ Generator shader to the surface slot of a mental ray material. Set it’s Coordinate System to 3 and render to an EXR using the floating point framebuffer.
The Pixel Cloud plugin effect for After Effects has several nifty features including the ability to relight a 3D rendered scene using separate passes. With this feature, you can drastically change the light source, direction of light and mood of a scene as well as the specularity and reflections in an image. Here is a demo/tutorial of how this can be achieved in After Effects with the Pixel Cloud plugin!
The upcoming Pixel Cloud plugin for After Effects can be used to relight a source image affecting the diffuse and specular properties. Coming soon I’ll be posting a revealing demo of how easy it is to take a static image from a 3D package and use Pixel Cloud and After Effects’ own 3D lights to create a dynamic and believable composite with moving lights, shadows, and reflections. Here’s an end product of what it will look like!
One of the nifty features in the upcoming Pixel Cloud plugin for After Effects is the ability to use After Effects own 3D lights to “relight” the alpha of an image according to its depth/position information. This can be done using an additional position pass or height map pass. Here is a quick little demo of how this can be achieved!