ALEXANDRIA, Va., May 19 -- United States Patent no. 12,632,990, issued on May 19.
"Method and apparatus for waste liquid recycling with optical inspection" was invented by Hsiu-An Lin (Kaohsiung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method and an apparatus for waste liquid recycling with optical inspection are provided. The method includes: establishing a plurality of statistical criteria; capturing an image of a waste liquid in a transparent pipeline; performing image processing on the image of the waste liquid to obtain a plurality of characteristic data about a color characteristic; performing statistical calculation processing on the plurality of characteristic data to obtain a plurali...