Captchas are design to elude OCR, so, probably not. Thanks,
Aaron -- Aaron Smith Web Development * App Development * Product Support Specialist Ai Squared * 725 Airport North Office Park, Fort Wayne, IN 46825 260-489-3671 * www.aisquared.com To insure that you receive proper support, please include all past correspondence (where applicable), and any relevant information pertinent to your situation when submitting a problem report to the Ai Squared Technical Support Team. > -----Original Message----- > From: Joe Paton [mailto:j...@vi-ability.demon.co.uk] > Sent: Friday, November 6, 2015 12:42 PM > To: Aaron Smith <asm...@aisquared.com>; Window-Eyes Discussion List > <talk@lists.window-eyes.com> > Subject: Re: Virtual View User's Guide > > Thanks Aaron. > > One question if I may, will virtual view work with graphic capchas? > > Great job, and thanks for taking the trouble. > > Joe Paton > > > On Fri, 6 Nov 2015 16:14:16 +0000 > Aaron Smith via Talk <talk@lists.window-eyes.com> wrote: > > Greetings, > > The following user's guide will ship with the next version of Virtual View, > but I > wanted to provide it for you here as many of you have been asking for more > information about what Virtual View is, and how to use it. > > Thanks, > > Aaron > > > > Virtual View > > 1 Overview > Virtual View is an app designed to provide a textual representation of a > program window, dialog box, message box or file using various text retrieval > methods. The resulting text can be reviewed in the Virtual View window > without disturbing the contents of the screen or file. In some cases, the > buttons, links and other controls found in the original window that was > virtualized can be acted on directly from the Virtual View window using > simple keyboard commands. > This app will come in handy in a variety of situations including: > > * Reading image based PDF files > > * Reading text presented as an image > > * Selecting and copying static text found in dialogs and program > windows > > * Interacting with programs that lack proper keyboard accessibility > > * Needing quick access to the text found in a PowerPoint presentation > > 2 Getting Started > The default hotkey, Control-Alt-V, will open the source selection dialog. You > may also choose to access Virtual View from the Apps menu in the Window- > Eyes Control Panel. Virtual View may also be activated by pressing Alt-Print > Screen. Alt-Print Screen is an operating system hotkey that takes a snapshot > of the active window. You have the option of letting Virtual View virtualize > this image when the hotkey is pressed. > 3 Selecting a Source > Pressing the Virtual View hotkey, or choosing Virtual View from the apps > menu, will cause the "Select Window or File to Virtualize" dialog to be > displayed. You can use this dialog to tell Virtual View what you want to > virtualize. You may choose from one of three sources: > > 1. Active Window (A) - Selecting this radio button will cause the > current > application window to be used as the source. > > 2. Focused Window (F) - Selecting this radio button will cause the > current > control in the active application to be used as the source. > > 3. File (I) - Selecting this radio button will cause Virtual View to > prompt for > a file using a standard Windows File Open dialog. > > 3.1 Supported File Types > Virtual View has the ability to virtualize a large number of file types. > Exactly > which files can be virtualized depends on the number of available file > "filters" > installed in your operating system. Filters are programmatic interfaces for > accessing contents of files. Several filters come pre-installed with your > operating system. The most common file types include: > > * Text > > * XML > > * HTML > > * Zip > Installing Microsoft Office provides you with additional filters allowing > Virtual > View to virtualize many Office document formats, including: > > * Docx > > * Xlsx > > * Pptx > > 4 Choosing a Method > After you've selected a source, whether it be a window or a file, you can > then choose how you want Virtual View to obtain the text from the source. > The methods available will differ depending on which source type is selected. > > 1. Clips (C) - The clips method will use the OSM (Off-Screen Model) to > retrieve text from a window. > > 2. UIA (A) - This UIA method will use the UI Automation interface to > retrieve text from a window. > > 3. OCR (O) - This method uses OCR (optical character recognition) to > retrieve text from either a window or a file. > > 4. Version (V) - This method provides version information for a window > or > file. > Which method you choose depends on a number of factors, and there are > advantages of each. > Clips is the most common method for accessing the text of a window. They > provide a good way for accessing precise locations of text for easy > manipulation with Virtual View's quick keys (discussed below). > The advantage of using UIA is evident when obtaining text from windows > that do not show up in the OSM. WPF applications, and other Direct2D > programs, are good examples of windows that have rich UIA information > while at the same time are completely void of clips. The UIA method obtains > text directly from the window rather than from the OSM, often resulting in > higher text accuracy. > OCR is a preferred choice when working with graphical interfaces, or files > containing images. While you don't have the benefit of knowing exactly > where the text is presented on the screen, you do have access to otherwise > completely inaccessible text. > 5 The Virtual View Window > After Virtual View has obtained the text from the selected source, using the > chosen method, it will display the resulting text in a read only edit box. The > Virtual View dialog contains a menu bar with the following options: > > * File (F) > > o Open (O) - Control-O - Opens support file types. > > o Save (S) - Control-S - Saves current text. > > o Exit (X) - Exits Virtual View > > * Edit (E) > > o Select All (S) - Control-A - Select all of the text. > > o Copy All (C) - Copies all of the text to the clipboard. > > o Copy Selection (O) - Control-C - Copies the selected text to the > clipboard. > > o Append All (A) - Appends all of the text to the clipboard contents. > > o Append Selection (P) - Appends the selected text to the clipboard > contents. > > * View (V) > > o Clips (C) - Switches to the Clips method of accessing text. > > o UIA (U) - Switches to the UIA method of accessing text. > > o OCR (O) - Switches to the OCR method of accessing text. > > * Help (H) > > o Help and Options (H) - Displays options for controlling Virtual View's > text > recognition characteristics. Refer to Additional Options discussed below > > 5.1 Quick Keys > Virtual View provides several "quick" keys that you can use to interact with > the text, and have that interaction passed on to the window where the text > originated. For example, if a button called Close exists in the window where > you obtained the text from, you can place your cursor on the word Close, > and press the letter L to activate the Close button. Available quick keys are: > > * L - Single Left Click > > * R - Single Right Click > > * D - Double Left Click > > * M - Middle Click > > * P - Route Mouse > > * F - Focus Control > While these quick keys are always available, they are most useful with Clips, > and become less useful when using the UIA and OCR, as the correlation > between text and originating window is less reliable with those methods. > 6 Additional Options > The Help and Options dialog contains the following options for controlling > how Virtual View behaves and how it processes images using the OCR > method: > > * Include Labeled Graphics (I) - Check box - Default unchecked - > Checking > this option will cause Virtual View to include labeled graphics when obtaining > text using the Clips method. > > * Include Window Types (N) - Check box - Default unchecked - Checking > this option will cause Virtual View to include windows types (edit box, > button, etc.) when obtaining text using the Clips method. > > * Always Ask for Window Type (L) - Check box - Default checked - This > option controls whether or not you're initially asked for a source and method > when pressing the Virtual View hotkey. > > * Prompt When Alt-Print Screen Is Pressed (P) - Check Box - Default > checked - This option controls whether or not you're prompted to have > Virtual View virtualize the image that's captured by the operating system > when the Alt-Print Screen hotkey is pressed. > > * Enable Image Processing (E) - Check box - Default unchecked - > Enables > or disables additional image processing for enhancing the results of text > recognition when using the OCR method. > > * Contrast (C) - Up/Down Control - Default 50 - This control is only > enabled when Enable Image Processing is checked, and controls the contrast > of the image before text processing occurs. A lower number will produce a > darker image, while a higher number will produce a lighter image. > > * Resize Multiplier (R) - Up/Down Control - Default 1 - This control > is only > enabled when Enable Image Processing is checked, and controls the final size > of the image before text processing occurs. A larger number will increase the > dimensions of the image, but also increases the size of the file, and could > result in decreased improvement. > > * Use Grayscale (U) - Check box - Default unchecked - This control is > only > enabled when Enable Image Processing is checked, and controls whether or > not the image is in color or black and white before text processing occurs. > > * Save Image (S) - Check box - Default unchecked - This control is > only > enabled when Enable Image Processing is checked, and will save the last > OCR'd image to the %temp% directory. This is only useful for debugging > purposes. > > * Reset Defaults (T)- Button - This control will reset the options to > the > factory defaults. > > * Help - Button - This control will display the default app help, > which > includes this help text, app version details, and the Hotkey Manager for > controlling the default Virtual View hotkey. > > 7 A Note About Elevation > By default, Virtual View can only access windows that are not elevated, or > opened as a non-administrative user. You can control this behavior by > checking the Require UAC (R) check box in the initial source selection dialog. > When checked, Virtual View will become elevated, and will then be able to > access elevated windows. > 8 Troubleshooting > Virtual View's OCR capabilities require operating system components that > may not be installed by default. If you find that you're consistently getting > "No text found" after using the OCR method, try re-installing the TIFF IFilter > by doing the following: > > 1. Open an admin command prompt. > > a. You can do this by opening the start menu, typing cmd, pressing > Control-Shift-Enter, and (assuming you have the User Account Control > feature enabled) confirming the UAC prompt. > > 2. In the command prompt window, enter the following: > dism /online /Enable-Feature /FeatureName:TIFFIFilter > > 3. Press enter, and wait for the command to complete. When it's > finished, > type exit, and press enter. > > 4. Reboot > Virtual View currently supports Windows 7 and up. There does, however, > seem to be an issue with Windows 8.1 where the OCR capabilities are not > available, even though they have been enabled. Some users have reported > success by following the steps outlined in the following Microsoft Technet > article: > https://technet.microsoft.com/en-us/library/dd744701%28v=ws.10%29.aspx > > -- > Aaron Smith > Web Development * App Development * Product Support Specialist Ai > Squared * 725 Airport North Office Park, Fort Wayne, IN 46825 > 260-489-3671 * www.aisquared.com > > To insure that you receive proper support, please include all past > correspondence (where applicable), and any relevant information pertinent > to your situation when submitting a problem report to the Ai Squared > Technical Support Team. > > _______________________________________________ > Any views or opinions presented in this email are solely those of the author > and do not necessarily represent those of Ai Squared. > > For membership options, visit http://lists.window- > eyes.com/options.cgi/talk-window-eyes.com/joe%40vi-ability.demon.co.uk. > For subscription options, visit > http://lists.window-eyes.com/listinfo.cgi/talk- > window-eyes.com > List archives can be found at http://lists.window-eyes.com/private.cgi/talk- > window-eyes.com > > -- > Joe Paton <j...@vi-ability.demon.co.uk> > _______________________________________________ Any views or opinions presented in this email are solely those of the author and do not necessarily represent those of Ai Squared. For membership options, visit http://lists.window-eyes.com/options.cgi/talk-window-eyes.com/archive%40mail-archive.com. For subscription options, visit http://lists.window-eyes.com/listinfo.cgi/talk-window-eyes.com List archives can be found at http://lists.window-eyes.com/private.cgi/talk-window-eyes.com
