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Feature requests, bug tracking, questions, and issues for Lattice.
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Color space support for Blackmagic URSA mini 4.6K #57

Closed hanshij closed 8 years ago

hanshij commented 8 years ago

Hi,

Will you be adding the Blackmagic URSA mini 4.6K to the list of supported camera's / colorspace? Would be great!

Best, Hans

gregcotten commented 8 years ago

Hi Hans,

Yes, we have reverse engineered both the original 4.6K and V3 4.6K colorspaces! They will be in the next release!

Greg

On Mon, Apr 18, 2016 at 11:10 PM hanshij notifications@github.com wrote:

Hi,

Will you be adding the Blackmagic URSA mini 4.6K to the list of supported camera's / colorspace? Would be great!

Best, Hans

— You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub https://github.com/videovillage/Lattice-Issues/issues/57

hanshij commented 8 years ago

Hi Greg,

Thanks for your quick reply! Looking forward to the next release! If you have an estimated time for the release please let me know.

I’m wondering how you determine the colorspace and tonal curve. The 1-dimensional tonal curve can be matched next to other cameras relatively easy, am I right? But colorspace is very complicated since it’s a 3D model. I even think it should be represented by 4D model.

Would be great if you could tell a bit about your process of figuring out these things. Thanks in advance.

Best, Hans

Op 19 apr. 2016, om 08:19 heeft Greg Cotten notifications@github.com het volgende geschreven:

Hi Hans,

Yes, we have reverse engineered both the original 4.6K and V3 4.6K colorspaces! They will be in the next release!

Greg

On Mon, Apr 18, 2016 at 11:10 PM hanshij notifications@github.com wrote:

Hi,

Will you be adding the Blackmagic URSA mini 4.6K to the list of supported camera's / colorspace? Would be great!

Best, Hans

— You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub https://github.com/videovillage/Lattice-Issues/issues/57

— You are receiving this because you authored the thread. Reply to this email directly or view it on GitHub https://github.com/videovillage/Lattice-Issues/issues/57#issuecomment-211753346

gregcotten commented 8 years ago

By using the Scene Linear to BMDFilm 4.6K and BMDFilm 4.6K to Scene Linear LUTs from Resolve, we can convert from BMDFilm to any other supported transfer function and vice versa. I’m not sure if this is what you mean by “tonal curve” but that is how you can re-map transfer functions.

Colorspace derivation is complicated but not impossible as long as you know what the unknown colorspace looks like when converted into a known colorspace. Luckily, as of Resolve 12.5 there is a relatively robust "Color Space Converter" Open FX plugin that you can apply to a node and do colorspace transformations much like in Lattice (except no white point adjustment). In fact, if you need this transformation now, I would suggest using that.

Anyway, here is more info on the colorspace derivation method originally developed by Tashi Trieu: http://colour-science.org/posts/red-colourspaces-derivation/

I hope that helps!

hanshij commented 8 years ago

Thanks, that certainly helps!

(Yes, by tonal curve I meant transfer function.)

Best, Hans

Op 19 apr. 2016, om 18:13 heeft Greg Cotten notifications@github.com het volgende geschreven:

By using the Scene Linear to BMDFilm 4.6K and BMDFilm 4.6K to Scene Linear LUT from Resolve, we can convert from BMDFilm to any other supported transfer function. I’m not sure if this is what you mean by “tonal curve” but that is how you can re-map transfer functions.

Colorspace derivation is complicated but not impossible as long as you know what the unknown colorspace looks like when converted into a known colorspace. Luckily, as of Resolve 12.5 there is a relatively robust "Color Space Converter" Open FX plugin that you can apply to a node and do colorspace transformations much like in Lattice (except no white point adjustment). In fact, if you need this transformation now, I would suggest using that.

Anyway, here is more info on the colorspace derivation method originally developed by Tashi Trieu: http://colour-science.org/posts/red-colourspaces-derivation/ http://colour-science.org/posts/red-colourspaces-derivation/ I hope that helps!

— You are receiving this because you authored the thread. Reply to this email directly or view it on GitHub https://github.com/videovillage/Lattice-Issues/issues/57#issuecomment-212000174

gregcotten commented 8 years ago

Implemented as of 1.5.7!

hanshij commented 8 years ago

Thanks!

HH

Op 22 mei 2016, om 05:56 heeft Greg Cotten notifications@github.com het volgende geschreven:

Implemented as of 1.5.7!

— You are receiving this because you authored the thread. Reply to this email directly or view it on GitHub https://github.com/videovillage/Lattice-Issues/issues/57#issuecomment-220812944

hanshij commented 5 years ago

Hi Greg,

I presume it’s a matter of time before you add the BMPCC 6K ?

Compliments for bringing out updates for Lattice! Still very much like it!

Best , Hans

Op 22 mei 2016, om 05:56 heeft Greg Cotten notifications@github.com het volgende geschreven:

Implemented as of 1.5.7!

— You are receiving this because you authored the thread. Reply to this email directly or view it on GitHub https://github.com/videovillage/Lattice-Issues/issues/57#issuecomment-220812944

gregcotten commented 5 years ago

Yep!

Waiting on info from BMD.

On August 14, 2019 at 12:03:27 AM, hanshij (notifications@github.com) wrote:

Hi Greg,

I presume it’s a matter of time before you add the BMPCC 6K ?

Compliments for bringing out updates for Lattice! Still very much like it!

Best , Hans

Op 22 mei 2016, om 05:56 heeft Greg Cotten notifications@github.com het volgende geschreven:

Implemented as of 1.5.7!

— You are receiving this because you authored the thread. Reply to this email directly or view it on GitHub < https://github.com/videovillage/Lattice-Issues/issues/57#issuecomment-220812944

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