A Film Restoration Diary

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    Home-Grown Jitter Stabilisation — Part 7 — The Stabilisation Works!

    21 Apr 2017

    Having spent the previous six posts explaining the jitter stabilisation process for the 1963 kine of Marianne, let’s take a look at how well it works. Read entire post

    Home-Grown Jitter Stabilisation — Part 6 — A Stabilisation Workflow

    03 Apr 2017

    For those of you not completely bamboozled by this excursion into the very-technical, here is a summary of the whole stabilisation process developed for the Marianne kine scan. Read entire post

    Home-Grown Jitter Stabilisation — Part 5 — Odds and Ends

    20 Mar 2017

    In this post we look at a few odds and ends that arose during the stabilisation exercise: Dealing with frame defects and splice bumps, adding frame numbers, and re-combining frames into a video file. Read entire post

    Home-Grown Jitter Stabilisation — Part 4 — A Bit of Geometry and Maths

    03 Mar 2017

    The last post described using image correlation to measure the motion of the white dots in each of the four frame corners. These white dots move together with the video raster. Stabilising the white dots will stabilise the unwanted movement or jitter of the video raster. Read entire post

    Home-Grown Jitter Stabilisation — Part 3 — Image Correlation to Detect Movements

    02 Feb 2017

    In the last couple of posts dealing with “Home-Grown Jitter Stabilisation”, we established:

    • The jitter comprises displacement, rotation and vertical scaling.
    • There is a white dot (partially) visible in each of the four corners of each scanned film frame. These dots move together with the video raster.
    • If we can measure the frame-to-frame movement of these dots, we can calculate and then correct (i.e. remove) the jitter.
     Read entire post

    Home-Grown Jitter Stabilisation — Part 2 — Three Kinds of Motion

    07 Dec 2016

    Let’s put some visuals to this idea of stabilising the jitter in the kine scans.

    As I mentioned in the last post, the jitter actually comprises three kinds of motion:

     Read entire post

    Home-Grown Jitter Stabilisation — Part 1 — Could it be Done?

    28 Nov 2016

    As mentioned in the previous post, Promoscape had been unable to deal with the jitter: “With regard to stabilisation, we can’t find a cost effective and consistent way to achieve this with the footage.”

    They explained that the jitter was not just horizontal and vertical movement (displacement) but included rotation as well.

     Read entire post

    More Digital Restoration Tests with Promoscape in Melbourne

    14 Oct 2016

    Twice before we’ve looked at digital restoration options:

     Read entire post

    Adjusting Framing and Levels in Final Cut Pro

    09 Sep 2016

    In the previous post we established the downsampling ratio for the 2K scans of “Marianne” (1963) which would result in a PAL SD frame — after cropping off the overscan. Read entire post

    Finding the Smallest Video Raster Crop Size for Downsampling Calculations

    15 Jun 2016

    In the earlier post[1] about downsampling the kine scans from 2K to “PAL SD+”, we established the need to know the minimum dimensions of the video raster, which varies slightly in width and height over the duration of a reel. The final cropping boundary for a PAL SD video needs to fall within the minimum video raster size so that we get nice clean edges on the video frames. Read entire post

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