3 Replies Latest reply on Nov 17, 2010 1:27 PM by Dave Merchant

    script to do reverse video, or may be an access to the innards to turn the rendered stream reversed

    dying veteran Level 1

      Hello Experts,

       

      A whole bunch of us who have undergone what might be described as traumatic treatment have been handed over a bunch of pdf ebooks to read for rehabilitation and alternative employment.

       

      But the eyes hurt a lot from the white glare of the monitor. In the good old days there were simple viewers that supported reverse video option.

       

      How to write a script that can reverse the video of the acrobat as one can do in many other programs?

       

      Is there also a way to make the image permanently inverted in pdfs ? There is some issue with grey and color image based pdfs or vector ones which use rendering into colors than simply black and white.

       

      Dying Vets

       

      P.S. No referral to commercial sites or solutions.

        • 1. Re: script to do reverse video, or may be an access to the innards to turn the rendered stream reversed
          Dave Merchant MVP & Adobe Community Professional

          Under Preferences > Accessibility there's an option to Replace Document Colors, in which you can choose a new scheme or

          force the colors for text and page background, for example making every PDF display as yellow text on black "paper".

           

          It won't affect graphics, video etc. or printouts, but the setting is application-level so once chosen it'll work for each PDF you open.

          • 2. Re: script to do reverse video, or may be an access to the innards to turn the rendered stream reversed
            dying veteran Level 1

            >

            > Re: script to do reverse video, or may be an access to the innards to

            > turn the rendered stream reversed

            >

             

            > Under Preferences > Accessibility there's an option to Replace

            > Document Colors, in which you can choose a new scheme or

            >

            > force the colors for text and page background, for example making

            > every PDF display as yellow text on black "paper".

            >

             

            this only works for vectorized pdfs. but thanx for the effort.

             

            >

            > It won't affect graphics, video etc. or printouts, but the setting is

            > application-level so once chosen it'll work for each PDF you open.

            >

             

            This feature to me is purely useless as there are many documents that are not

            vector including the ones I mostly deal with in connection with research from

            the peer reviewed journal of 911 studies or old journal scans. I need an adobe expert to provide

            a solution to this basic problem or escalate it to a level to create a solution if

            one does not exist, ie how to obtain a reverse video setting for the bitonal images

            without actually reversing them. I bet there is a bit somewhere in the pdf standard

            that can allow this toggle to be done.

             

            Dying Vets

            • 3. Re: script to do reverse video, or may be an access to the innards to turn the rendered stream reversed
              Dave Merchant MVP & Adobe Community Professional

              If you're referring to embedded images (of text or of something else) then there's no way to gobally invert them just for viewing, either within Acrobat or within the PDF specification - as far as Acrobat is concerned it has no idea that an image contains text, so accessibility doesn't apply - it renders the image in the way the file says it should, which is the fundamental principle behind using PDF. There may be some third-party software out there which can perform an inversion of the entire desktop at the graphics driver level, but I don't know of any to suggest.