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D90 Stair-Stepping Removal

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    Hi there,
    Hi Lee, hi nihilus,

    Thanks for this thread! I've registered here because of it.

    I've written a filter for frei0r removing the stairs, based on the posts here. Unlike most versions here it does not scale the image though but directly transforms the image (similar to Halsu's displacement map).

    The plugin is on my frei0r fork at the moment, so it needs to be compiled, but I will try to get it into the original frei0r codebase.


    Now where can the plugin be used? In all apps that use frei0r, listed here:
    http://en.wikipedia.org/wiki/Frei0r
    Personally, I'm using kdenlive. The filter can then just be applied

    Here an example; upper part with filter, lower part without. Zoom 200 %.

    screen1.jpg

    And a «real life» example image:



    after applying the filter:




    Granjow
    Last edited by Granjow; 08-03-2010, 02:04 PM.
    Primes are optically faster, lighter, usually sharper, cheaper. Zooms are more convenient. If I am in a hurry, I'll use zooms. I'm rarely in a hurry. —PerroneFord
    Light Painting on video

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      Update: Stairstepping removal filter will be in Frei0r 1.2.
      Primes are optically faster, lighter, usually sharper, cheaper. Zooms are more convenient. If I am in a hurry, I'll use zooms. I'm rarely in a hurry. —PerroneFord
      Light Painting on video

      Comment


        Originally posted by Granjow View Post
        Update: Stairstepping removal filter will be in Frei0r 1.2.

        Comment


          Hello, i spent all the weekend reading all the stuff here and try to improve the quality of a video that i have made with d90. but in fcp or with ae the result is the same. i don't know what i'm doing wrong. i would appreciate a little help :S thanks

          i can upload some clips from the original file http://www.youtube.com/watch?v=LYSsCnfRMb0

          Comment


            you're not saying what you're doing so it's hard to say what you're doing wrong but my guess is you're simply not looking close enough, it's not like the dirrerence is striking if you're not sure what to look for.
            http://www.mattias.nu/
            http://www.imdb.com/title/tt1388437/

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              well i start a new 1280x720 project. add the movie to timeline, then apply the upscaler, and then the rescaler filter. export with apple pro res and remains the same. the stair step remains. maybe im doing it wrong!

              Comment


                um, did you read the instructions for the upscaler? that's not how you use it. just apply the rescaler and that's it. works every time, just like that.
                http://www.mattias.nu/
                http://www.imdb.com/title/tt1388437/

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                  This is awesome, but I can't find Wilson's AE project any where. Can someone point me to where it is posted?

                  Comment


                    OK! After the fusion macro I've managed to make this into an After Effects project
                    info: http://bedtimestoriesx.blogspot.com/...for-after.html
                    or download it: http://rapidshare.com/files/41939425...FXV01.rar.html
                    It works great. It seems to be faster than fusion. If you have multiple processors try rendering with single or multiple processors to see which is faster. (In my config where I draw the files from the local network single process rendering is much faster)
                    The only quirk this method has is that you lose the top line of the original video. Same is also on the fusion method. But I discovered it a little late and I can live with it since the rest of the image is great and fixes ALL the skipped lines.
                    Maybe sometime I'll improve it a bit. I'm also working on a method to batch process in AFX and working to have a pixelbender filter developed (not by me, and we're not sure yet it can be done correctly)

                    Comment


                      thanks levon for this ae file
                      i tried a lot of the different fixes, but all of them still give me stairs, its better for sure.
                      i think i have to live with it untill i get another camera
                      but i will work with ur solution

                      Comment


                        Hey guys I have been reading this thread for a little while now trying to figure out how to do all of this and I am failing miserably.

                        Here is what I have done..

                        -downloaded the avisynth
                        -downloaded the virtualdubmod
                        -downloaded the the avisynth script that was tweaked by hdkhang

                        I have my movie clip on my desktop straight off the camera. Then I have the script on the desktop. I right clicked the movie clip and went to properties to see where it's exact location was. I copied and paste the location into the script where it said "d:\movie.avi" then i saved it and tried to bring the destep into Virtualdubmod. For some reason when i look at it in the open box of Virtualdubmod it does not say .AVS after destep. So anyways i try to load the destep in and it gives me errors.. The error states: Avisynth open failure: Layer only support RGB32 and YUY2 formats (C:\Documents and Settings\evano\desktop\destep.avs.avs, line57)

                        I don't know if i didn't do something or did something wrong.. Would love to get this to work so my d90 videos are worth shooting.. Thanks in advanced

                        Comment


                          Did you try the one levon posted?

                          Comment


                            Dear Lee,
                            i just joined dvx user in order to be able to reach you. I'm very interested in your stair stepping removal discovery. I'd be so grateful if you'd have the kindness and capability to help me. Can i use this method (as seen in your posts in 2008) with footage i shot with a dvx100B (PAL- Progressive) and captured with Final cut on a Mac? I imported the footage into premiere pro cs4 and that's when the aliasing started. Same thing happened when i tried importing it into Final Cut. My question in brief is: will your method work for me? If not, what can i do? I thank you very much for any help you can give me.

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                              ///
                              Last edited by Lee Wilson; 10-12-2011, 09:02 AM.

                              Comment


                                D90 step removal in Final Cut Pro X ???

                                Greetings. I am reading these posts with interest as I've been shooting video for a while with the D90. I am using Final Cut Pro X and am wondering if anyone has had any luck using one of these stair removal techniques in FCPX ??

                                I have tried the displacement map ("bump map" in Motion 5) but I can't seem to get sufficiently fine-grained control over this map.

                                Unfortunately FCPX no longer supports FXScript, so Matt's plugins won't work.

                                Does anyone have suggestions for the simplest implementation in FCPX?

                                Thanks.

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