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A lesson in how not to compare grading services

July 9, 2017 in ANACS, Auctions, Blogs, Coin Errors, Coin Grading, Coins, Collecting, Education, Grading, Investing, Numismatica, Numismatics, Opinion, PCGS (Professional Coin Grading Service), Rare Coins, USA Coins, World Coins

By: Scott Barman Coin Collectors Blog (

Every so often I will read something and even though I agree with the premise and possibly the hypothesis, I disagree with the method. This is what happened when I read “How do late ANACS slabs stack up with modern PCGS?” This article by Michael Bugeja at Coin Update is not the first of its […] Full article at the source>

Source: Coin Collectors Blog (

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Computerized Grading, Part 2: Can We Teach a Computer to See?

November 4, 2016 in Blogs, Coins, Collecting, Education, Grading, News, Numismatica, Numismatics, Opinion, Photography

By: Kendall Bailey (Coin Update News)

see (verb)—Perceive with the eyes; discern visually.

Can we teach a computer to see?

Three components are necessary for sight to happen. First, you need an eye, something to detect light. In the mechanical world, a camera would serve this function.

Second, you need a brain to decode the messages being passed along the optic nerve. A computer with a software package can accomplish this.

Third (and this is the most critical), you need cognition—that is, the ability to understand what is being seen. For instance, when we see a yellow car with a small sign on top and the letters T-A-X-I on both… Full article at the source>

Source: (Coin Update News)

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