Which OCR package for text scanning is the best?
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From: CSM1 on 1 Mar 2010 19:14 spam(a)kenward.eu wrote in news:bdpno59r8a6n5tcsnc2nqtut5obagoc66f(a)4ax.com: > On Sun, 28 Feb 2010 17:36:05 +0100, "Edward Kroeze" > <edwardkroeze(a)home.nl> wrote: > >>"CSM1" <nomail(a)nomoremail.com> wrote in message >>news:Xns9D2C78F9917E5nomoremail(a)74.209.136.91... >>[snip] >>> >>> No OCR is 100% accurate. 90% is doable. >>> >> >>Just curious what exactly you mean by 90% ? >> >>1) 90% of the pages are flawless? (and 10% contain one or more >>mistakes?) 2) 90% of each line is correct? (and 10% (appr. 5 to 8 >>characters) PER LINE are wrong?) >>3) something different? >> >>The first option might be workable, but the second for sure is not. >> >>Cheers, >> >>Edward > > Different people define OCR accuracy in different ways. I prefer to go > by characters misrecognised. > > I am amazed that anyone quotes 90%. They must have a truly useless > scanner working on something they found in a muddy puddle. I used 90% because OCR is not 99.9% accurate 100% of the time. 90% is doable all the time. 99.9% is often true. My scanner is a Canon Canoscan 8400F, it is a very good scanner. It did not come in a muddy puddle. If you have used Omnipage Pro 12, you know what I mean about the 90% accuracy. Omnipage Pro 15 is far more accurate than Omnipage Pro 12. The current Omnipage is now Pro 17. -- CSM1 http://www.carlmcmillan.com > > It is much much lower than anything I get. > > I have just looked at a simple three-column press cutting, chosen at > random, scanned in B&W at 300 dpi. (I have a Canon Canoscan LiDE > 600F.) And recognized with OmniPage Pro. > > The cutting is 257 words and has 1591 characters. It has one word > misspelt. 'Natufe' rather than 'Nature'. > > One character awry in >1500 words is more like 99.9%, which is my > general experience, confirmed by looking at another cutting. That one > has no errors. > > Note, I am talking practice rather than theory. I neither know nor > care about the subtleties of edge detection. > > MK
From: Jethro Pull on 4 Mar 2010 09:26 To digress ... One of my real-life misspell examples is the word "Cancelled" which you will see spelled "Canceled" with only one L. Most often found when we have bad weather and TV shows flights that have been "Cancelled" by one airline and "Canceled" by another. Frankly, I'm confused and should consult my Merriam-Webster to get an answer, but the suspense is more fun than knowing which is correct. On 3/1/2010 12:38 PM, isw wrote: >>> Have you ever found spelling errors in the MS dictionary? I have. >>> > In article<RTNin.38804$K81.13522(a)newsfe18.iad>, > Jethro Pull<jpull(a)hotmail.com> wrote: > > >> Interesting ... no, I have found no spelling errors in the dictionary. >> How would you correct them if you knew an obvious error >> > In the dictionary provided with Word 6 for Mac, the word "continuous" > also had the spelling "continuos". I managed to get the attention of a > MS employee, who after telling me three times that the spelling was > correct (because he persisted in using Word's dictionary to check it > instead of Webster's!), he finally admitted that it was in error. > > There is evidently no way to actually correct the error by fixing the > dictionary, but he told me how I could get the word flagged so I could > manually correct it. Create an "exclude" dictionary, which tells the app > to flag a word even if it is in the built-in dictionary, and then when > you see that it is flagged, you correct it manually. A real hack, but > that just makes the solution consistent with the rest of the application. > > Actually, an "exclude" dictionary can be useful: suppose you wanted to > spell the word "color" when corresponding with folks in the US, but > "colour" when the letter was going to England. By putting the word in > the "exclude" list, it would always be brought to your attention. > > >> or accidentally added a misspelled word to the dictionary? >> >> > Words you add do not go into the main dictionary, but into an auxiliary > "custom" one which you can edit. > > Isaac >
From: CSM1 on 4 Mar 2010 09:59 Jethro Pull <jpull(a)hotmail.com> wrote in news:hqPjn.4980$QL4.3614(a)newsfe24.iad: > To digress ... > > One of my real-life misspell examples is the word "Cancelled" > which > you will see spelled "Canceled" with only one L. Most often found when > we have bad weather and TV shows flights that have been "Cancelled" by > one airline and "Canceled" by another. Frankly, I'm confused and > should consult my Merriam-Webster to get an answer, but the suspense > is more fun than knowing which is correct. > Acording to a test of the two spellings in Microsoft Word 2000, both spellings are correct. Neither word is flagged as mis-spelled. However my American Heritage dictionary show that "canceled" is the correct spelling. My Random House College Dictionary shows both spelling as correct. So I guess it is a matter of choice. -- CSM1 http://www.carlmcmillan.com > On 3/1/2010 12:38 PM, isw wrote: >>>> Have you ever found spelling errors in the MS dictionary? I have. >>>> >> In article<RTNin.38804$K81.13522(a)newsfe18.iad>, >> Jethro Pull<jpull(a)hotmail.com> wrote: >> >> >>> Interesting ... no, I have found no spelling errors in the >>> dictionary. How would you correct them if you knew an obvious error >>> >> In the dictionary provided with Word 6 for Mac, the word "continuous" >> also had the spelling "continuos". I managed to get the attention of >> a MS employee, who after telling me three times that the spelling was >> correct (because he persisted in using Word's dictionary to check it >> instead of Webster's!), he finally admitted that it was in error. >> >> There is evidently no way to actually correct the error by fixing the >> dictionary, but he told me how I could get the word flagged so I >> could manually correct it. Create an "exclude" dictionary, which >> tells the app to flag a word even if it is in the built-in >> dictionary, and then when you see that it is flagged, you correct it >> manually. A real hack, but that just makes the solution consistent >> with the rest of the application. >> >> Actually, an "exclude" dictionary can be useful: suppose you wanted >> to spell the word "color" when corresponding with folks in the US, >> but "colour" when the letter was going to England. By putting the >> word in the "exclude" list, it would always be brought to your >> attention. >> >> >>> or accidentally added a misspelled word to the dictionary? >>> >>> >> Words you add do not go into the main dictionary, but into an >> auxiliary "custom" one which you can edit. >> >> Isaac >> >
From: Jethro Pull on 5 Mar 2010 09:52 On 3/4/2010 9:59 AM, CSM1 wrote: > Jethro Pull<jpull(a)hotmail.com> wrote in > news:hqPjn.4980$QL4.3614(a)newsfe24.iad: > > >> To digress ... >> >> One of my real-life misspell examples is the word "Cancelled" >> which >> you will see spelled "Canceled" with only one L. Most often found when >> we have bad weather and TV shows flights that have been "Cancelled" by >> one airline and "Canceled" by another. Frankly, I'm confused and >> should consult my Merriam-Webster to get an answer, but the suspense >> is more fun than knowing which is correct. >> >> > Acording to a test of the two spellings in Microsoft Word 2000, both > spellings are correct. > > Neither word is flagged as mis-spelled. > > However my American Heritage dictionary show that "canceled" is the > correct spelling. > > My Random House College Dictionary shows both spelling as correct. > > So I guess it is a matter of choice. > > > Gee whiz! Is nothing sacred anymore? Two correct spellings? Thanks.
From: CSM1 on 5 Mar 2010 10:00
Jethro Pull <jpull(a)hotmail.com> wrote in news:KU8kn.69246$Ye4.55526 @newsfe11.iad: > On 3/4/2010 9:59 AM, CSM1 wrote: >> Jethro Pull<jpull(a)hotmail.com> wrote in >> news:hqPjn.4980$QL4.3614(a)newsfe24.iad: >> >> >>> To digress ... >>> >>> One of my real-life misspell examples is the word "Cancelled" >>> which >>> you will see spelled "Canceled" with only one L. Most often found when >>> we have bad weather and TV shows flights that have been "Cancelled" by >>> one airline and "Canceled" by another. Frankly, I'm confused and >>> should consult my Merriam-Webster to get an answer, but the suspense >>> is more fun than knowing which is correct. >>> >>> >> Acording to a test of the two spellings in Microsoft Word 2000, both >> spellings are correct. >> >> Neither word is flagged as mis-spelled. >> >> However my American Heritage dictionary show that "canceled" is the >> correct spelling. >> >> My Random House College Dictionary shows both spelling as correct. >> >> So I guess it is a matter of choice. >> >> >> > Gee whiz! Is nothing sacred anymore? Two correct spellings? > > Thanks. Apparently so. Just remember this is American English! -- CSM1 http://www.carlmcmillan.com |