[BlindMath] Scanning braille for sight reading

Mon Jul 31 21:11:27 UTC 2017

George, that's exactly what I said. I was only saying I wanted such a 
program for linux.

On 07/26/2017 04:27 PM, George Bell wrote:
> I think you are misunderstanding Perky Duck.
>
> You can NOT type in normal letters and numbers.
>
> You use the f d s and j k l keys representing dots 3 2 1 and 4 5 6 to write
> a braille file.
>
> It is that file which can then be saved in various formats.
>
> I'm surprised that Hadley's tutor does not appear to know about Perky Duck.
> It is virtually a standard world-wide.
>
> George
>
> -----Original Message-----
> From: BlindMath [mailto:blindmath-bounces at nfbnet.org] On Behalf Of John G
> Heim via BlindMath
> Sent: 26 July 2017 17:17
> To: Blind Math list for those interested in mathematics
> Cc: John G Heim
> Subject: Re: [BlindMath] Scanning braille for sight reading
>
> I would be okay with a program that allowed me to type braille via a
> standard keyboard, like the package someone described from duxbury. But if I
> am supposed to write the value for pi, it would be cheating to type
> 3.14  and have the software convert it to Nemeth. I need to make the number
> symbol, dots 3, 4, 5, and 6. Then the symbol for 3, dots 2 and 4, And so on.
>
> I wonder if an editor exists for linux that allows you to press several keys
> at a time to make a braille symbol. Press the s, j, k, and l keys all at
> once to make a number symbol.
> On 07/26/2017 09:56 AM, White, Jason J wrote:
>> You could just use a good text editor such as Emacs, and set the fill
> column to 40 characters (or whatever your preferred line length is). You
> would need a braille display with a braille keyboard for text entry. BRLTTY
> supports computer braille text entry under Linux. If you want page breaks,
> you could introduce form feed characters manually or write a script to
> automate it.
>>> -----Original Message-----
>>> From: BlindMath [mailto:blindmath-bounces at nfbnet.org] On Behalf Of John G
>>> Heim via BlindMath
>>> Sent: Wednesday, July 26, 2017 10:50 AM
>>> To: steve.jacobson at visi.com; Blind Math list for those interested in
>>> mathematics <blindmath at nfbnet.org>
>>> Cc: John G Heim <jheim at math.wisc.edu>
>>> Subject: Re: [BlindMath] Scanning braille for sight reading
>>>
>>> I think what somebody else said was right -- the instructor is used to
> people
>>> taking photos with their phone and submitting that. But the whole reason
> I'm
>>> doing this is to find the best tools. I think I am going to see if I can
> find a linux
>>> text editor that allows me to generate brf files.  That ducksbury tool
> sounds
>>> interesting to me but right now, I must have linux.
>>>
>>>
>>>
>>> On 07/26/2017 08:52 AM, Steve Jacobson via BlindMath wrote:
>>>> John,
>>>>
>>>> I can see where increasing the DPI might help since the braille dot is
>>>> smaller than most characters.  Another thing to experiment with is
>>>> whether your scanner is getting the image in black and white or color.
>>>> I frankly don't know which will work the best because such things seem
>>>> variable.  I have had cases, though, where low contrast differences on
>>>> a page came out better in black and white because of the binary
>>>> nature, but it seems likely that approach might cause some dots to not
>>>> show at all falling below a threshold.  Obviously, the brightness
>>>> sensitivity can also matter.  I would think that an instructor in such
>>>> a course would have very specific recommendations, though, or perhaps
>>>> Hadley itself.  This does not seem like it would be an unusual problem.
>>>>
>>>> I, for one, would be interested to hear what you find out.  I don't
>>>> remember, are you an Optacon user?
>>>>
>>>> Best regards,
>>>>
>>>> Steve Jacobson
>>>>
>>>> -----Original Message-----
>>>> From: BlindMath [mailto:blindmath-bounces at nfbnet.org] On Behalf Of John
>>> G.
>>>> Heim via BlindMath
>>>> Sent: Wednesday, July 26, 2017 7:12 AM
>>>> To: Blind Math list for those interested in mathematics
>>>> <blindmath at nfbnet.org>
>>>> Cc: John G. Heim <jheim at math.wisc.edu>
>>>> Subject: Re: [BlindMath] Scanning braille for sight reading
>>>>
>>>> My instructor is sighted. She can sight-read the braille if the dots
>>>> come up clearly enough in the scanned document. I guess I wouldn't be
>>>> taking the course if I could see but if I could, all I'd have to do is
>>>> to keep tweaking the scanner settings until it worked. I think the
>>>> first thing I am going to do is increase the DPI. There is a lot of
>>>> info out there that says 300 DPI is best for OCR and my own
>>>> experiments have confirmed that.  But a higher DPI might be better
>>>> just to get braille dots to show up on a scanner.
>>>>
>>>>
>>>>
>>>> On 07/26/2017 04:43 AM, George Bell wrote:
>>>>> Hi John,
>>>>>
>>>>> Scanning embossed braille is not an easy task.  Indeed there was once
>>>>> a program called "OBR" (Optical Braille Recognition).  But even that
>>>> required
>>>>> that specific makes and models of scanner be used, which allowed
>>>>> control
>>>> of
>>>>> lighting during the scan.
>>>>>
>>>>> You instructor should know this.
>>>>>
>>>>> Do I get the impression you are using a Perkins type braille writer
>>>>> as opposed to say 6 key entry into PC braille software such as Duxbury?
>>>>>
>>>>> George
>>>>>
>>>>> -----Original Message-----
>>>>> From: BlindMath [mailto:blindmath-bounces at nfbnet.org] On Behalf Of
>>>>> John G Heim via BlindMath
>>>>> Sent: 25 July 2017 15:02
>>>>> To: Blind Math list for those interested in mathematics
>>>>> Cc: John G Heim
>>>>> Subject: [BlindMath] Scanning braille for sight reading
>>>>>
>>>>> I'm taking a braille class through Hadley School for the Blind. I am
>>>> trying
>>>>> to submit my homework assignments as scanned images of braille pages
>>>>> for
>>>> the
>>>>> instructor to sight-read. The instructor asked me to scan them as
>>>>> photos
>>>> but
>>>>> I don't know what that means. Does anybody have experience scanning
>>>>> in braille and can tell me the best format, mode, and dpi settings? I
>>>>> sent my instructor tif line-art at 300 dpi which works well for OCR
>>>>> but that
>>>> didn't
>>>>> work for sight-reading braille.
>>>>>
>>>>>
>>>>> --
>>>>> --
>>>>> John G. Heim; jheim at math.wisc.edu; sip://jheim@sip.linphone.org
>>>>>
>>>>> _______________________________________________
>>>>> BlindMath mailing list
>>>>> BlindMath at nfbnet.org
>>>>> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fnfbne
>>>>>
>>> t.org%2Fmailman%2Flistinfo%2Fblindmath_nfbnet.org&data=02%7C01%7Cjjwh
>>> ite%40ets.org%7Cb3463f805174423ab39608d4d435ca8d%7C0ba6e9b760b34fa
>>> e92
>>> f37e6ddd9e9b65%7C0%7C0%7C636366774880227294&sdata=aV6zDPJKotROf2
>>> B%2BK
>>>>> AGnRYDzJQBJY4kv93fd4VmdQ%2F4%3D&reserved=0
>>>>> To unsubscribe, change your list options or get your account info for
>>>>> BlindMath:
>>>>>
>>>> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fnfbnet
>>>>
>>> .org%2Fmailman%2Foptions%2Fblindmath_nfbnet.org%2Fgeorge%2540techno-
>>> vi
>>> sio&data=02%7C01%7Cjjwhite%40ets.org%7Cb3463f805174423ab39608d4d435
>>> ca8
>>> d%7C0ba6e9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C6363667748802272
>>> 94&sdat
>>>> a=DIVglu4xoiRZUfZz1OGCN9WVjs7JqWtgus6LZ9KwZgY%3D&reserved=0
>>>>> n.co.uk
>>>>> BlindMath Gems can be found at
>>>>> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.
>>>>> blindscience.org%2Fblindmath-gems-
>>> home&data=02%7C01%7Cjjwhite%40ets.o
>>> rg%7Cb3463f805174423ab39608d4d435ca8d%7C0ba6e9b760b34fae92f37e6dd
>>> d9e9
>>> b65%7C0%7C0%7C636366774880237299&sdata=PGstGyxDq8Z%2BbaKL2z4XND
>>> hMpKRm
>>>>> MyzikiWtMtrkCSM%3D&reserved=0>
>>>>>
>>>>
>>>> _______________________________________________
>>>> BlindMath mailing list
>>>> BlindMath at nfbnet.org
>>>> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fnfbnet
>>>>
>>> .org%2Fmailman%2Flistinfo%2Fblindmath_nfbnet.org&data=02%7C01%7Cjjwhit
>>> e%40ets.org%7Cb3463f805174423ab39608d4d435ca8d%7C0ba6e9b760b34fae
>>> 92f37
>>> e6ddd9e9b65%7C0%7C0%7C636366774880237299&sdata=MLvwjqvbHRlsDluDZ
>>> G2UuVc
>>>> pfAYtL8IS8CBTyrnI5bY%3D&reserved=0
>>>> To unsubscribe, change your list options or get your account info for
>>>> BlindMath:
>>>> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fnfbnet
>>>>
>>> .org%2Fmailman%2Foptions%2Fblindmath_nfbnet.org%2Fsteve.jacobson%2540
>>> v
>>> isi&data=02%7C01%7Cjjwhite%40ets.org%7Cb3463f805174423ab39608d4d435
>>> ca8
>>> d%7C0ba6e9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C6363667748802372
>>> 99&sdat
>>> a=OQ%2B%2FLoHQiK1qp7IkAEw54ypbummBXtuUcBBdtWufk%2B8%3D&reserve
>>> d=0
>>>> .com
>>>> BlindMath Gems can be found at
>>>> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.b
>>>> lindscience.org%2Fblindmath-gems-
>>> home&data=02%7C01%7Cjjwhite%40ets.org
>>> %7Cb3463f805174423ab39608d4d435ca8d%7C0ba6e9b760b34fae92f37e6ddd9
>>> e9b65
>>> %7C0%7C0%7C636366774880237299&sdata=PGstGyxDq8Z%2BbaKL2z4XNDhM
>>> pKRmMyzi
>>>> kiWtMtrkCSM%3D&reserved=0>
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> BlindMath mailing list
>>>> BlindMath at nfbnet.org
>>>> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fnfbnet
>>>>
>>> .org%2Fmailman%2Flistinfo%2Fblindmath_nfbnet.org&data=02%7C01%7Cjjwhit
>>> e%40ets.org%7Cb3463f805174423ab39608d4d435ca8d%7C0ba6e9b760b34fae
>>> 92f37
>>> e6ddd9e9b65%7C0%7C0%7C636366774880237299&sdata=MLvwjqvbHRlsDluDZ
>>> G2UuVc
>>>> pfAYtL8IS8CBTyrnI5bY%3D&reserved=0
>>>> To unsubscribe, change your list options or get your account info for
>>> BlindMath:
>>>> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fnfbnet
>>>>
>>> .org%2Fmailman%2Foptions%2Fblindmath_nfbnet.org%2Fjheim%2540math.wis
>>> c.
>>> edu&data=02%7C01%7Cjjwhite%40ets.org%7Cb3463f805174423ab39608d4d43
>>> 5ca8
>>> d%7C0ba6e9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C6363667748802372
>>> 99&sdat
>>>> a=XgeCnHNTZfbEjdOyQaRAv8qsCVDQBVwKi4YHny98HKE%3D&reserved=0
>>>> BlindMath Gems can be found at
>>>> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.b
>>>> lindscience.org%2Fblindmath-gems-
>>> home&data=02%7C01%7Cjjwhite%40ets.org
>>> %7Cb3463f805174423ab39608d4d435ca8d%7C0ba6e9b760b34fae92f37e6ddd9
>>> e9b65
>>> %7C0%7C0%7C636366774880237299&sdata=PGstGyxDq8Z%2BbaKL2z4XNDhM
>>> pKRmMyzi
>>>> kiWtMtrkCSM%3D&reserved=0>
>>>>
>>> _______________________________________________
>>> BlindMath mailing list
>>> BlindMath at nfbnet.org
>>>
> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fnfbnet.org
>>> %2Fmailman%2Flistinfo%2Fblindmath_nfbnet.org&data=02%7C01%7Cjjwhite%4
>>> 0ets.org%7Cb3463f805174423ab39608d4d435ca8d%7C0ba6e9b760b34fae92f3
>>> 7e6ddd9e9b65%7C0%7C0%7C636366774880237299&sdata=MLvwjqvbHRlsDluD
>>> ZG2UuVcpfAYtL8IS8CBTyrnI5bY%3D&reserved=0
>>> To unsubscribe, change your list options or get your account info for
> BlindMath:
> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fnfbnet.org
>>> %2Fmailman%2Foptions%2Fblindmath_nfbnet.org%2Fjjwhite%2540ets.org&dat
>>> a=02%7C01%7Cjjwhite%40ets.org%7Cb3463f805174423ab39608d4d435ca8d%7
>>> C0ba6e9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C636366774880237299&s
>>> data=nVZxmPFx%2BO1%2Fu%2Fx%2FFyLNbs03hz0zaoUXA3DhVsjeAk4%3D&res
>>> erved=0
>>> BlindMath Gems can be found at
>>> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.blin
>>> dscience.org%2Fblindmath-gems-
>>> home&data=02%7C01%7Cjjwhite%40ets.org%7Cb3463f805174423ab39608d4d
>>> 435ca8d%7C0ba6e9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C6363667748
>>> 80237299&sdata=PGstGyxDq8Z%2BbaKL2z4XNDhMpKRmMyzikiWtMtrkCSM%3
>>> D&reserved=0>
>> ________________________________
>>
>> This e-mail and any files transmitted with it may contain privileged or
> confidential information. It is solely for use by the individual for whom it
> is intended, even if addressed incorrectly. If you received this e-mail in
> error, please notify the sender; do not disclose, copy, distribute, or take
> any action in reliance on the contents of this information; and delete it
> from your system. Any other use of this e-mail is prohibited.
>>
>> Thank you for your compliance.
>>
>> ________________________________
>>
> _______________________________________________
> BlindMath mailing list
> BlindMath at nfbnet.org
> http://nfbnet.org/mailman/listinfo/blindmath_nfbnet.org
> To unsubscribe, change your list options or get your account info for
> BlindMath:
> http://nfbnet.org/mailman/options/blindmath_nfbnet.org/george%40techno-visio
> n.co.uk
> BlindMath Gems can be found at
> <http://www.blindscience.org/blindmath-gems-home>
>