Robert Michael Hord, 62, a scientist and author who specialized in the applications of image processing and remote sensing for natural resource management, medical analysis, target recognition and graphics, died Dec. 7 at the Hospice of Northern Virginia. He had cancer.

Mr. Hord, a resident of Reston, was born in San Francisco. He graduated from the University of Notre Dame and received a master's degree in physics from the University of Maryland.

He retired in 1999 after about two years as senior scientist with Titan Corp. in Reston. Earlier he had been director of high-performance computing at the General Electric Advanced Technology Laboratory in Moorestown, N.J.

From 1984 to 1989, he directed the advanced development center at MRJ Inc. in Oakton. Earlier positions included directing space systems at General Research Corp. in McLean, managing applications development for the Institute for Advanced Computation at the National Aeronautics and Space Administration and directing computer applications at Earth Satellite Corp. in Bethesda.

He wrote eight books on high-performance computing, technology forecasting, image processing and remote sensing.

Mr. Hord was a member of the Virginia Governor's Technology Advisory Board and was a speaker on high-performance computing, image processing and remote sensing at universities in the United States and abroad.

He had lived in Arlington and Reston for 23 years.

His avocations included painting.

Survivors include his wife, Susan Hord of Reston; and a sister.