Open everzeni opened 7 years ago
Good question Emilia..
Your approach seems the most conservative and looks good. I would mark this part and come back to it later. I'm wondering what a pixel is... I actually would tend to annotate pixel as part of the unit and add the type resolution, although this unit looks pretty tricky as doesn't seems to have a scientific value / correspondence in inches/mm.
I would annotate all the units, even the "creative" ones. It's the "generative" aspect of a scientific nomenclature.... so annotate pixel as part of the unit - and I would do it now because it would take a lot of time to come back to cases like that diluted in the training data (from my own experience :( ).
In image technical stuff, I have the feeling that pixel is quite common, for instance bits per pixel (bpp) or pixels per inch (ppi). As Luca says, I think they all correspond to density measures.
So I annotate:
- <measure type="value"><num>40</num> <measure type="DENSITY" unit="mas/pixel">
mas per pixel </measure></measure>
- ≥ <measure type="interval"><num atLeast="100">100</num> <measure type="DENSITY"
unit="km/pixel">km per pixel</measure></measure>
?
Yes! But I think I would use uniform notation "mas.pixel^-1" "km.pixel^-1" instead of the / @lfoppiano what do you think ?
@kermitt2 I agree with uniform the annotation of the unit
Regarding the type, while discussing with @everzeni we've found that the spacial/angular resolution seems a more appropriate type for this kind of measurement involving pixels. What do you think to have such measures annotated with type SPACIAL_RESOLUTION
or we could group all the resolutions with a single type: RESOLUTION
.
So I annotated:
The high spatial resolution of the images (<measure type="value"><num>40</num> <measure
type="RESOLUTION" unit="mas.pixel^-1">mas per pixel</measure></measure>, corresponding to ≥
<measure type="interval"><num atLeast="100">100</num> <measure type="RESOLUTION"
unit="km.pixel^-1">km per pixel</measure></measure>)
@kermitt2 please confirm that we can add the type RESOLUTION
Since SPACIAL RESOLUTION
and ANGULAR RESOLUTION
are the same, yes, we add the new type RESOLUTION
I'm doubting about this example:
I would tend to annotate the ANGLE unit and the LENGTH unit, independantly from the "per pixel" part, (because
mas/pixel
orkm/pixel
doesn't seem to be a known unit, but I'm not sure at all about that):If we were to annotate
mas/pixel
andkm/pixel
as plain units, what would be their type? (create a RESOLUTION type? UNKNOWN ? DENSITY ?)What do you think?