Measuring ANPR System Performance
A 2008 article in Parking Trend International discussed a disparity in claimed vs. experienced license plate recognition read rates, with manufacturers claiming that their recognition engines can correctly report 98% of the time, although customers experience only 90% to 94% success, even with new equipment under perfect conditions. Early systems were reportedly only 60% to 80% reliable. True system error rate is the product of its subsystem error rates (image capture, license plate image extraction, LP image interpretation); slight increases in subsystem error rates can produce dramatic reductions of read rates. The effects of real-world interfering factors on read rate are not uniformly specified or tested by manufacturers. The article states "there is a need for the industry to adopt a standard performance measurement protocol to enable potential customers assess the best fit for their particular requirements."
Read more about this topic: Automatic Number Plate Recognition
Famous quotes containing the words measuring, system and/or performance:
“Man always made, and still makes, grotesque blunders in selecting and measuring forces, taken at random from the heap, but he never made a mistake in the value he set on the whole, which he symbolized as unity and worshipped as God. To this day, his attitude towards it has never changed, though science can no longer give to force a name.”
—Henry Brooks Adams (1838–1918)
“UG [universal grammar] may be regarded as a characterization of the genetically determined language faculty. One may think of this faculty as a ‘language acquisition device,’ an innate component of the human mind that yields a particular language through interaction with present experience, a device that converts experience into a system of knowledge attained: knowledge of one or another language.”
—Noam Chomsky (b. 1928)
“The honor my country shall never be stained by an apology from me for the statement of truth and the performance of duty; nor can I give any explanation of my official acts except such as is due to integrity and justice and consistent with the principles on which our institutions have been framed.”
—Andrew Jackson (1767–1845)