I am trying to read a text in a given rectangle using readText() function.
The function works correctly except when it has to read some text which has special characters like ' _ & etc.
I tried using validCharacters with readText() function. But it didn't help.
Code -
put ReadText((287,125,810,164),validCharacters:"_-'.ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890") into Login
I tried working with character collections. But that doesn't seem to be right because the text trying to pick is a dynamic text combination of numbers alphabets and a special character. So one cannot create a library of character collection of every alphabet (a-z, A-Z), numbers(0-9) and special characters.
Example of text trying to read:
Login_Userid1_1, Login'Userid1_1
So how do I read such text correctly
Debugging OCR is a bit of an imprecise science. EggPlant has a lot of OCR Parameters to tweak. When designing test cases it's best to try use other mechanisms to gather information whenever possible. ReadText() should be considered a last resort when more reliable methods are unavailable. When I've used it I've often needed to do a lot of trial and error to find the right set of settings, and SearchRectangle to get consistent results. Without seeing exactly what images you are trying to read text from it's difficult to impossible to troubleshoot where the issue might be.
One thing that does stand out to me is that you're trying to read strings that may contain underscores. ReadText() has an optional property IgnoreUnderscores which treats underscores as spaces. By default this property is set to ON. It defaults to ON because some OCR engines have problems identifying underscore characters consistently.
If you want to have ReadText() handle underscores you'll want to explicitly set this property to OFF.
ReadText(rect, validCharacters:chars, ignoreUnderscores:OFF)
Related
I'm playing around with ANSI escape sequences, e.g.
echo -e "\e[91mHello\e[m"
on a Linux console to display colored text.
Now I try to use superscript and subscript output like a=b².
I read here and here about: Partial Line Down (subscript) and Partial Line Up (superscript) but I'm not sure about the exact syntax and even which terminal client might supports this.
Any suggestions about this?
Possibly some commercial product supports it, but it's not supported by any terminal emulator you'll encounter (unless someone modifies one just to prove a point).
The standard describes possible escape sequences, but there is no requirement that any given sequence is supported by any terminal. There are commonly supported (and assumed) sequences such as clearing the screen, but even for that, not all terminals have supported the feature.
The reason is that terminal emulators are generally used with applications (such as text editors) which assume a regular set of rows/columns, and that the text is shown compactly (no extra space such as would be needed to allow for partial line movement. Back in the day when people used typewriters, it was common to have 1.5 or 2.0 line-spacing, and get no more than 33 lines on a page. That changed, long ago.
The need for subscripts/superscripts didn't go away — Unicode provides a usable set of characters with that representation (see Superscripts and Subscripts
Range: 2070–209F)
Further reading:
Your New Royal Portable (1953).
Line Spacing - Butterick's Practical Typography
console_codes - Linux console escape and control sequences
I'm using   on my page, encoding is UTF-8, no BOM. Works pretty well even in other search engine, but the excerpt, Google is showing for my page contains a visible
 
code. Is there something, I can do against it?
Apparently Google does not recognize the   entity reference; you didn’t provide a URL, but it was rather simple to confirm the observation, searching with "hairsp" (with quotes).
The way around this bug is to use the numeric character reference   or the character U+200A HAIR SPACE itself.
You might also consider using other methods for creating added spacing, such as the padding properties in CSS. They are more flexible than the fixed-width spaces.
I'm using the same zachrone iphonepdf but I did not get the text. My text view shows nothing. What's the problem?
Here is my code:
NSString *text=convertPDF(#"Course.pdf");
texview.text=text;
But I did not get anything in text view?
The text extractor zachron / pdfiphone (I assume you meant that one) is extremely naive and makes very many assumptions.
It ignores the PDF file structure and, therefore completely ignores whether the data it inspects is still used in the current revision.
It ignores encryption and therefore will fail completely for many documents with usage restrictions.
It completely ignores font encodings and implicitely assumes an ASCII'ish one --- this is fairly often true in small PDFs with English text only and not embedded fonts; otherwise the result can be anything.
... many many more assumptions ...
Unless one only has to deal with very simple documents and the extracted text is not really necessary for the functionality of one's code, I would propose using different code for text extraction.
I've seen a number of QR codes that contain a URL but also have extra some text after it. Something like:
http://www.example.com Thanks for scanning this QR code!
I've experimented with using a number of different delimiting methods (several spaces, a question mark, two dashes, one or two returns) and all work to varying degrees on various scanning programs.
Some respect the space character, others respect the return. Some think the URL isn't a URL at all when I use a return. Long story short, it's all over the map how the various scanning programs (NeoReader, iNigma, Qrafter, Beetag, OptiScan, etc.) treat characters after a URL.
Is there any consensus on weather (a)this is even a good idea or not and (b)if so, what is the 'correct' (best practice) way to do it? (I know I should go read the RFC for the exact definition of a URL but since the reader programs are all over the map, I suspect they didn't read it either.)
You can make it work by converting the text message into valid URL, while trying to keep readability.
In your case it can be:
http://www.example.com?Thanks_for_scanning_this_QR_code
It's not perfect, but it can help on web analytics side to distinguish all QR code users.
Spaces are definitely not part of a URL, so, in that sense a space definitely should delimit the end of a URL.
The entire string is not a URL, taken as a whole of course. So yes it's asking for trouble.
As you've found, the empirical answer is that not every reader does what you want. Barcode Scanner for instance understands the split here, but does not prompt the user to launch the browser since the payload isn't a URL per se.
So: it's a bad idea.
Here's my wild and whacky psuedo-code. Anyone know how to make this real?
Background:
This dynamic content comes from a ckeditor. And a lot of folks paste Microsoft Word content in it. No worries, if I just call the attribute untouched it loads pretty. But the catch is that I want it to be just 125 characters abbreviated. When I add truncation to it, then all of the Microsoft Word scripts start popping up. Then I added simple_format, and sanitize, and truncate, and even made my controller start spotting out specific variables that MS would make and gsub them out. But there's too many of them, and it seems like an awfully messy way to accomplish this. Thus so! Realizing that by itself, its clean. I thought, why not just slice it. However, the microsoft word text becomes blank but still holds its numbered position in the string. So I came up with this (probably awful) solution below.
It's in three steps.
When the text parses, it doesn't display any of the MSWord junk. But that text still holds a number position in a slice statement. So I want to use a regexp to find the first actual character.
Take that character and find out what its numbered position is in the total string.
Use a slice statement to cut it from.
def about_us_truncated
x = self.about_us.find.first(regExp representing first actual character)
x.charCount = y
self.about_us[y..125]
end
The only other idea i got, is a regex statement that allows it to explicitly slice only actual characters like so :
about_us([a-zA-Z][0..125]) , but that is definately not how it is written.
Here is some sample text of MS Word junk :
≪! [If Gte Mso 9]>≪Xml>≪Br /> ≪O:Office Document Settings>≪Br /> ≪O:Allow Png/>≪Br /> ≪/O:Off...
You haven't provided much information to go off of, but don't be too leery of trying to build this regex on your own before you seek help...
Take your sample text and paste it in Rubular in the test string area and start building your regex. It has a great quick reference at the bottom.
Stumbled across this
http://gist.github.com/139987
it looks like it requires the sanitize gem.
This is technically not a straight answer, but it seems like the best possible one you can find.
In order to prevent MS Word, you should be using CK Editor's built-in MS word sanitizer. This is because writing regex for it can be very complicated and you can very easily break tags in half and destroy your site with it.
What I did as a workaround, is I did a force paste as plain text in the CK Editor.