Increasing image quality??

[Anonymous]

Hello. I,d like to know what happen with the image when i import in flame a pal or ntsc resolution image within a 2k partition and choose the option fill and quality. The result is my old pal image convert in a 2k resolution image, with a lot of megas. How is this possible? How works this process? If my image has an original information, flame multiply or clone the pixels?

[Anonymous]

The process of upresing an image is common place, we all do daily no doubt in Photoshop.

What Inferno is doing is applying a algorithm for interpolating between samples…
in other words your ntsc/pal frame is a set of samples – lines and pixels across, this is resampled at higher resolution, and depending on where the new resolution dictates – the new pixels are interploated from the old samples around them.

Simple line doubling or pixel doubling is a very very crude solution, that produces unwanted artifacts.

In fact, Shake offers many more options for the artist to use in up and down resing, while the discreet crew have implemented some very nice ones, but offer you less choice. Film output companies go even further with up resing algorithms combining special grain and sharpening tools algorithms – but it sounds like from your email your just pleased with the Discreet ones – which are great for most things 🙂

I hope that answers your question.

[Anonymous]

O.K. THEN , IS A GOOD IDEA TO FILL WITH QUALITY ENABLED A PAL CROMA IMAGE IN A 2K PARTITION, PULL A MATTE AND MAKE THE COMPOSITE WITH THIS RESOLUTION AND HIS ADVANTAGES, AND THEN RETURN THE RESULT TO THE PAL PARTITION? I KNOW THAT THE BIT DEPTH IS DIFFERENT, BUT I,M SURE THA IS EASIER TO WORK WITH THE BEST RESOLUTION ALL THE TIME.

[Anonymous]

Actually no – you might think so but really upresing for a key does not in anyway produce more information – and thus as a rule working in the native format would be quicker and just as good if not better. Also in this particular case the 12 bit doesn’t do anything for you.

One small request if I can… typing in ALL CAPS is generally seen on the net to be shouting.. perhaps you could use lower and upper case? The web interface on FXguide should not require you to use all caps.

-mike

PIL wrote:

O.K. THEN , IS A GOOD IDEA TO FILL WITH QUALITY ENABLED A PAL CROMA IMAGE IN A 2K PARTITION, PULL A MATTE AND MAKE THE COMPOSITE WITH THIS RESOLUTION AND HIS ADVANTAGES, AND THEN RETURN THE RESULT TO THE PAL PARTITION? I KNOW THAT THE BIT DEPTH IS DIFFERENT, BUT I,M SURE THA IS EASIER TO WORK WITH THE BEST RESOLUTION ALL THE TIME.

[Author]

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