[QuadList] IVC Recovery (Was AMPEX VR-5100 WILL IT PLAY OTHER MACHINES TYPE A TAPE) NOW image quality

[Norman Hurst]

All that processing and the dress is still ugly.

In the 80s I did research on the problem of chroma/luma separation.  If the image is not moving and you have a frame delay, separation can be perfect.  But it's moving pictures, after all.  The best solution seemed to be two line delays with spatially-adaptive processing, i.e. avoid combining lines across an image edge e.g. Patent US4786963 - Adaptive Y/C separation apparatus for TV signals


 
   Patent US4786963 - Adaptive Y/C separation apparatus f...
An adaptive luma/chroma separation apparatus is herein disclosed. Means, including delay elements and bandpass filters, are employed to generate a set of...  
View on www.google.ca Preview by Yahoo  
 
On Saturday, May 17, 2014 7:52 PM, Charles Park Seward <park at videopark.com> wrote:
 


There are many ways to capture an image. One of the most important part of the process is the decoder.  After many experiments, I have found the Accom 10-bit decoder to do the best job. The goal is to make composite look like component.

This is a low band color image from the late 60s, taken with a TK-42.  Notice the lack of banding, hanging dots and cross-color contamination.







The path is Quad, 10-bit TBC, analog proc amp (usually bypassed), analog router, 10-bit Accom decoder, Accom noise reducer, SDI Proc Amp/DA, AJA Kona card using AJA Control Room software, Mac Pro.


Best,
Park

C. Park Seward
Cell: 818-535-2747
Home: 541-476-6657
2" Quad and 1" "C" transfers and more
The Transfer Lab at Video Park
Visit us: http://www.videopark.com





On May 16, 2014, at 2:13 PM, Steve White <Steve.White at 800CallNow.com> wrote:


>
Impressive image.  How'd you actually capture it?

Looking at the bottom of the screen, it appears this may not even
      be a first generation tape.  I'm actually a bit surprised to see
      what appear to be consecutive tracking errors along the bottom. 
      Can you tell us what generation this might be; if any TBC was
      used; and so on ...



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