View source for H-Anim Future Work and Outreach 2014

(Our meeting today is hosted by Myeong Won Lee and the Web3D Korea Chapter.  Thank you - ham sa ham ni dah!)

'''Overview.''' Lots of activity continues to gradually proceed in H-Anim.  These lists of suggested steps can help us stay organized and productive.

== Animation ==

=== Best practices ===
* Composition of partial behaviors
** Additive (e.g. waving + sitting down)
** Superposition(e.g. waving + walking)
* Inline and IMPORT/EXPORT conventions
** LOA by LOA versions?

=== Build Behavior Libraries ===
* Static position/posture poses
* Corresponding Displacer nodes

== Examples ==

Examples are always a powerful way to show whether the specification is working or needs improvement.

=== Additional Examples Needed ===
* Anatomically correct human
* Animals
* Cartoon charchers (humanoid but not human)
* Conversion of BVH examples
* Skin (we will add Joe's examples, as they are tested)
* Clothing

There are a lot of things we will build - humans are complex!  An independent archive may be needed, separate from the X3D Basic Examples Archive.

=== Human Skeleton ===
* Modified over years by Joe Williams and Damon Hernandez, origin uncertain
* Modified DEC 2013 by Joe Williams and Don Brutzman, checked into Medical examples at
** http://www.web3d.org/x3d/content/examples/Basic/Medical
** http://www.web3d.org/x3d/content/examples/Basic/Medical/BonesAllSkeleton.x3d
** http://www.web3d.org/x3d/content/examples/Basic/Medical/SkeletonCompleteNoNormals.x3d
* Individual geometry files for each segment in human body, independently loadable
* Define how to change size to match a given body

=== Korean Characters ===
* prepared by MWL and students, excellent cartoon characters
* Joints/Segments and skin, H-Anim compliant, LOA?
* TODO add to Basic archives, find/review prior list of requested fixes

== H-Anim Specification ==

* How to indicate whether a character is a strict human or not?
* LOA 5 for all remaining animatable joints in human body? or additional LOAs?
** Hands feet face, anything else?
* Names for additional Joints, Segments, Sites

=== Hands, Feet ===
* Problem:  how to we handle wrist joints as a directed acyclic graph (DAG) structure?
** Physiology is different, apparently a mesh
** Nevertheless each bone can only be in one position/orientation at a time
** Thus a scene graph can show correct results, even if forces are complex
* We care most about the position/orientation of each bone
** Typically we think of angle relationships between multiple bones
** End result is what matters: position/orientation of each bone
** Perhaps we should use the name "pseudo Joint" when this is a mismatch (such as carpal bones in wrist)

=== Face ===
* Facial Action Coding System (FACS), Action Units (AUs)

=== Medical considerations ===
* Confirm all names are anatomically accurate.  Either change names or create new lists of names or create correspondences tables, to note how this works
* Joint, Segment and Site are also natural/logical/essential places to hang metadata and annotations

=== Skin ===

* Placeholder here... Joe and Don have lots of checking to do

== Tools ==

=== BVH Converter ===
* Algorithm needs to be documented, can we finish our blog entry?
* MWL's C++ code, described in slides, final fixes needed
* DPB to consider writing corresponding Java code

=== "MWL H-ANIM Editor" ===
* What is the name of this tool please?
* Can we announce availability?
* Excellent and novel capabilities - TODO list
* Can produce sophisticated animations

=== X3D Decorator ===
* New, under development
* XSLT stylesheet can follow "decorator pattern" to modify scene graphs
** Converts .x3d to a modified .x3d
* Current support for canonical form, omitting default values, url corrections, minor fixups
* TODO add support for H-Anim
** remove geometry from Joints/Segments/Sites
** Add/replace geometry to Joints/Segments/Sites

=== X3D Schematron Validation ===
* X3D Schematron includes numerous validation rules
** TODO list them?
* Are asymmetry warnings helpful?
* Still need rules for skin
* Lists of additional joint, segment, site names

== Other stuff ==
* List of all non-animating joints in the body?
* Is facial animation similar to skin?
* Is clothing similar to skin?
* Cross-check this list for coverage of all items in NWIPs

== Outreach ==

=== Education ===
* Prepare summary information
* Prepare tutorial
* Prepare set of videos to accompany demos?

=== Coordination  ===
* Not clear if we should reach out to other groups or not while so much is occurring... keeping wiki up-to-date is critical
* Perhaps we should simply advertise our progress to other groups, perhaps there will be other participants?
* Are our emerging changes compatible with MPEG-4 practices? Are there things to either change or maintain for compatibility?
* What other ISO standards committees have related work?