# A Film Restoration Diary

## 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.

## 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:

## 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.

## More Digital Restoration Tests with Promoscape in Melbourne

14 Oct 2016

Twice before we’ve looked at digital restoration options:

## 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

## Where Have We Been and What’s Next?

12 Apr 2016

Wow, we’re up to the 23rd post in this blog series on restoring the Tarax Show Christmas Pantomime kines. Let’s take a breather and review where we’ve been so far and then map out the next steps. Read entire post

## The Relevance of Pixel Aspect Ratio

29 Mar 2016

Congratulations if you got through the previous rather technical post about Pixel Aspect Ratio. Read entire post