Moorhead likened the digital compression process to suctioning the air out of a plastic bag of blankets before storing it.īill was busy at home, too. The method remains a gold standard in the field some 30 years after its development, he said, allowing medical images to retain their definition and quality. While at IBM, he and colleague Joan Mitchell developed the algorithms for a JPEG technique known as "lossless compression," according to Moorhead. Bill didn't talk about something unless he thought it was going to work." "Bill was literally the prototype classic engineer," Moorhead said. Bill with daughters Elizabeth and Patty riding an electric bicycle he built.
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In his professional and personal pursuits, Bill was a problem solver - an engineer, inventor and builder who was deeply focused on his projects. They got hitched in 1967 and settled in Carmel, N.Y., with dreams of moving to Vermont after retirement. "By the time you're done with that trip, you're either in love, or you can't stand each other and don't want to see each other again," Allen-Pennebaker said.įor Bill and Margaret, it was love. Before they were married, the two regularly drove from Westchester County, N.Y., in an unheated, red Volkswagen Beetle to ski at Mad River Glen. We use JPEGs all day long.'"īill and his late wife, Margaret Carlson Pennebaker, discovered Vermont in the mid-1960s.
In 2020, between Zoom classes, Allen-Pennebaker, 52, told her father: "'Hey, Dad. "I wouldn't call what Bill did revolutionary, but it was definitely evolutionary," Moorhead said, noting that developing JPEG technology was a collaborative endeavor among several groups. It was called a "joint photographic experts group," aka JPEG - which, in turn, was instrumental in the development of the MPEG, or moving picture experts group, used for videoconferencing.īill and company laid the groundwork for the innovation, said computer engineer Robert Moorhead, a former coworker of Bill's who is now a professor at Mississippi State University. Watson Research Center in Yorktown Heights, N.Y., he helped develop a way to compress a photograph, enabling its efficient storage and transport while preserving the quality of the image.
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An assistant professor in the college's Core division, she often told her dad, "It's because of you that I have a job."īill was an engineer with expertise in computer software science. (October 23, 1935-Septem) came to mind because he helped develop the technology that allowed her to keep working when COVID-19 prevented in-class learning. Teaching online during the pandemic made Elizabeth Allen-Pennebaker think of her father - not just because the octogenarian shared her home in Burlington's Hill Section, near her office at Champlain College. Bill Pennebaker and collaborators at IBM Research Center.
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