{"id":1718,"date":"2022-08-30T00:13:35","date_gmt":"2022-08-30T00:13:35","guid":{"rendered":"https:\/\/idsc.miami.edu\/magazine\/?p=1718"},"modified":"2023-01-03T20:37:01","modified_gmt":"2023-01-03T20:37:01","slug":"meet-the-scientist-fast-tracking-improvements-in-digital-image-diagnostics","status":"publish","type":"post","link":"https:\/\/idsc.miami.edu\/magazine\/meet-the-scientist-fast-tracking-improvements-in-digital-image-diagnostics\/","title":{"rendered":"MEET THE SCIENTIST Fast-Tracking Improvements in Digital Image Diagnostics"},"content":{"rendered":"

\"DavidLike most other college freshmen, David Chapman<\/strong> wasn\u2019t entirely sure what he wanted to major in when he started at the University of Maryland, Baltimore County<\/a><\/span> (UMBC). But unlike his classmates, Chapman was 12 years old. The home-schooled prodigy had his pick of schools and majors, and his first inclination was to stick with what he loved most.<\/p>\n

\u201cI went into computer science because I wanted to know how video games were made,\u201d he said. At the time, the games he played on his PlayStation were transitioning from 2D to 3D graphics and Chapman searched every corner of the Internet to learn how they were made. At UMBC, he quickly shifted away from video games, but the fascination with computer renderings of images endured. \u201cIf you look at an image, you can kind of see what math looks like,\u201d Chapman said. \u201cIf you\u2019re using math to analyze images using computers, then that gives a pictorial representation of math in some sense. That was one of those things I always found exciting, and I still find that exciting.\u201d<\/p>\n

\"underwaterArmed with a PhD in computer science from UMBC\u2014he defended his thesis at age 24\u2014Dr. Chapman is still fascinated by imaging, but now he\u2019s creating image processing algorithms to detect lung cancer from CT scans. He\u2019s programmed underwater robots, written algorithms to predict El Ni\u00f1o from satellite and in-situ measurements, and has become an expert in artificial intelligence, computer vision, and machine learning. Now Chapman is bringing those skills to the University of Miami\u2019s Institute for Data Science and Computing (IDSC), where he\u2019s joining a specialized unit dedicated to artificial intelligence and machine learning<\/a><\/span> (AI\/ML).<\/p>\n

“He was one of those geniuses.
\nWhen he was 15, he took my
\nadvanced operating system class
\nand blew up the curve.”<\/h3>\n

\"YelenaYelena Yesha<\/strong>, the Director of the AI\/ML unit, first met Chapman when he was just nine years old. She encouraged him to attend UMBC, where she was a professor at the time, and worked with him throughout his time there. When Yesha made the move to IDSC, she heavily recruited him to join her as part of an ongoing expansion of the Institute. \u201cHe was one of those geniuses,\u201d said Yesha, herself a world-renowned computer scientist who has authored 11 books and more than 200 papers. \u201cWhen he was 15, he took my advanced operating system class and blew up the curve.\u201d<\/p>\n

Chapman is one of several joint appointments hired by IDSC over the past year as part of a broader strategy to push the data science and AI\/ML techniques conducted at IDSC to departments across the University. Chapman\u2019s appointment is in the Department of Computer Science<\/a><\/span>, where he\u2019ll be teaching classes and doing research, but he\u2019s already working with the Miller School of Medicine and planning to work with experts in other schools. IDSC Director Nick Tsinoremas<\/strong> said he didn\u2019t hire Chapman based solely on his intellect, but because of the communication and collaboration skills he\u2019s demonstrated throughout his career. \u201cHe\u2019s part of the future of what we\u2019re trying to do at IDSC,\u201d Tsinoremas said. \u201cHe\u2019s amazing.\u201d<\/p>\n

\"Nicholas<\/p>\n

Chapman has already worked in a wide variety of fields, starting with a stint at Columbia University\u2019s Lamont-Doherty Earth Observatory<\/a><\/span>. There, he was a lone computer scientist working with climatologists, climate physicists, and statisticians to improve the hyperspectral imaging used to observe and forecast the effects of El Ni\u00f1o, which heavily influences the rainfall and temperature patterns of the U.S., Mexico, and other countries bordering the eastern Pacific Ocean.<\/p>\n

He then jumped into the private sector, working for Oceaneering International<\/a><\/span> to improve the autonomous underwater robots pioneered by the Houston-based company. There, Chapman explored a completely different side of computer science, working on underwater sonar and LIDAR systems, and working with sailors, mechanical engineers, and technicians to fine-tune their devices. \u201cI always want to learn more,\u201d he said. \u201cI want to learn things that are a little bit outside of my discipline just to get a better context.\u201d<\/p>\n

After three years with Oceaneering International, Chapman returned to UMBC as an assistant professor and researcher. There, his research circled back to the world of computer imaging. Chapman chose to focus on medical imaging in part because he feels there\u2019s a \u201cmoral component\u201d to that work. He works with the National Alliance Against Disparities in Public Health<\/span><\/a>, a nonprofit organization using scientific research to reduce health disparities in the U.S., and RAD-AID International<\/a><\/span>, a nonprofit that is delivering radiology and imaging technologies to more than 40 impoverished nations, all in an effort to \u201cdemocratize the development of machine learning.\u201d<\/p>\n

In recent years, his research has focused on improving the ability of computers to diagnose lung cancer from CT scans and X-ray images. In its current form, \u201ccomputer vision\u201d can be trained to identify tumors and cancers from a limited group of examples. But when those algorithms are exposed to different sets of X-rays and CT scans, they suddenly can\u2019t figure out what they\u2019re seeing. The technology is still in its early stages, but is already being used in some clinical practices, so Chapman is trying to fast-track improvements.<\/p>\n

\"computer<\/p>\n

\u201cAI has certainly gotten more powerful, but machines haven\u2019t necessarily gotten smarter,\u201d he said. \u201cThey have no common sense whatsoever. Therein lies the problem. I\u2019m trying to address that gap.\u201d That goal is what drove him to Coral Gables. He saw Yesha, his former teacher (who is also working to improve medical imaging), he saw that IDSC was planning to continue expanding its AI\/ML team, and he saw an opportunity to collaborate with radiologists at the Miller School of Medicine<\/a> and practitioners throughout the University of Miami Health System (UHealth<\/a><\/span>) and the Jackson Health System<\/span><\/a>.<\/p>\n

\u201cIt seemed like that was a great opportunity for someone like me, who doesn\u2019t just work in a vacuum, but who wants to branch out and meet people who know things I don\u2019t know,\u201d he said.<\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Like most other college freshmen, David Chapman wasn\u2019t entirely sure what he wanted to major in when he started at the University of Maryland, Baltimore County (UMBC). But unlike his classmates, Chapman was 12 years old. The home-schooled prodigy had his pick of schools and majors, and his first inclination was to stick with what […]<\/p>\n","protected":false},"author":8,"featured_media":1583,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47,634],"tags":[700,648,697,698,75,699,341,69],"_links":{"self":[{"href":"https:\/\/idsc.miami.edu\/magazine\/wp-json\/wp\/v2\/posts\/1718"}],"collection":[{"href":"https:\/\/idsc.miami.edu\/magazine\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idsc.miami.edu\/magazine\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idsc.miami.edu\/magazine\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/idsc.miami.edu\/magazine\/wp-json\/wp\/v2\/comments?post=1718"}],"version-history":[{"count":3,"href":"https:\/\/idsc.miami.edu\/magazine\/wp-json\/wp\/v2\/posts\/1718\/revisions"}],"predecessor-version":[{"id":1759,"href":"https:\/\/idsc.miami.edu\/magazine\/wp-json\/wp\/v2\/posts\/1718\/revisions\/1759"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/idsc.miami.edu\/magazine\/wp-json\/wp\/v2\/media\/1583"}],"wp:attachment":[{"href":"https:\/\/idsc.miami.edu\/magazine\/wp-json\/wp\/v2\/media?parent=1718"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idsc.miami.edu\/magazine\/wp-json\/wp\/v2\/categories?post=1718"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idsc.miami.edu\/magazine\/wp-json\/wp\/v2\/tags?post=1718"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}