Top Projects

matter-lab Mental health technologies for research, assessment, and intervention
I direct the MATTER Lab at the Child Mind Institute, a non-profit in Manhattan.
Our mission is to advance our understanding and care of mental health by building, improving, and deploying technologies (such as wearable devices, phone apps, and analytics tools) for use in therapy, education, and research. An example wearable device is our wrist-worn position tracker called the "Tingle" that records and remotely monitors compulsive behaviors (such as hair pulling, skin picking, and nail biting) and can provide an alert during such behaviors (by haptic feedback on the wrist). We have created apps to remotely administer therapies for children with anxiety disorders, as well as MindLogger, a general-purpose data collection platform to administer a wide range of assessments, including surveys, drawing and tapping tasks, and audio recordings. We support the Healthy Brain Network, an ongoing study of 10,000 children and adolescents that collects and freely disseminates data from brain imaging, eye tracking, voice, video, biosamples, and a large battery of mental health assessments.
mindboggle_logo Mindboggle brain image analysis software
mindboggle.info
I am the lead developer of Mindboggle, Python software for the analysis (feature extraction, labeling, and morphometry) of brain image data. The software has been used to prepare data for an international Alzheimer's challenge, has been funded by three NIH grants, and is under active development.
elloradaily Ellora Time-lapse
ellora.org
I take a photograph of my daughter's face every day (not as consistently now that she's 15 years old!) and use facial features to coregister the images to create a time-lapse animation of her entire life. This project has been showcased in articles in the L.A. Times and Slate Magazine and has aired on Japan's NHK and Germany's DW-TV.
elloracaves Ellora Cave Temples
elloracaves.org
My wife and I collaborated with Professor Walter Spink of the University of Michigan to create the first comprehensive documentation of the Ellora cave temples of India. I took over 7,000 digital photographs of the Buddhist, Hindu, and Jain cave temples and have constructed an online "walk through" user interface to view the images with respect to the temple ground plans. This work was funded in part by a grant from the Mellon Foundation and several grants from the Indian government. We are now working on a book about the Ellora Caves!
elloradaily Halloween!
Gallery
Once a year I take out 1-3 days to create a different identity. Most of these costumes don't last long, as they usually follow an edible theme.

Online resources from past projects

roygbiv Mindboggle's ROYGBIV brain image viewer
roygbiv.mindboggle.info
As part of the Human Brain Mapping 2015's Hackathon, Anisha Keshavan and I put together a browser-based, interactive brain surface visualization tool. Simple plots of Mindboggle shape measures accompany the anatomically labeled brain regions. This is under active development.
mindboggle.info/braincolor
Early brain labeling project supporting Mindboggle that introduced a labeling protocol, software for generating an optimized brain colormap, and a brain image volume viewer.
infovis Information visualization taxonomy and language
infovis.info
I created this searchable database of over 1,000 information visualizations to guide development of a taxonomic classification system for organizing and graphical language for symbolically representing such visualizations.
qovert Quotes over Time
QoverT
Quotes over Time tracked the top-quoted people from Reuters Alertnet News, and presents their quotes on a timeline. This pilot project uses natural language processing to extract quotations and assign them to speakers.

Personal websites

toad
KAKlein.com:   my mother's art portfolio
ArnoldKleinGallery.com:   my parents' gallery of fine art
KorinthianViolins.com:   my sister's violin shop
Pupating.org:   my brother's entomology and art
CulturalEntomology.org:   my brother's cultural entomology