Dear Martin, I agree that elaborating the Dimension - Visual Item question, view directions and sections of physical features defined by view focus would be an interesting issue.
It is a question of perspective. https://www.youtube.com/watch?v=keW4QqRGVN4 Regards, Øyvind > Am 27.10.2021 um 19:21 schrieb Martin Doerr via Crm-sig > <crm-sig@ics.forth.gr>: > > Dear Florian, > > Nice Problem! Actually I do not regard it a Simulation, because it does not > introduce theories to extrapolate into the future or to fit to observational > data for theory testing. I think it is simply data Evaluation, which results > in an estimate for a place. I'd regard the calculated viewpoint as a > declarative E53 Place P168 defined by : the calculated value, which P189 > approximates the phenomenal place of the image taking activity. The direction > of taking an image is not modeled in the CRM yet as well as some other > parameters of observations. > > In my opinion, the image itself can be seen as a measurement of optical > qualities of a section of a physical feature, the surface of earth, or an > observation in the case of painting. Both would "P138 represent" this > section. In CRMdig, we took digital photos as a kind of composite Dimension, > because it provides quantitative light emission data, but we did not > consolidate this with taking the image as a Visual Item, a kind of > Information Object. This is not a contradiction. > Both, the painting and the photo can represent identifiable details and > landmarks that allow for matching them with reality, or an assumed common > reality. > > So far, a quick thought. I think, a nice issue, to elaborate the Dimension - > Visula Item question, view directions and sections of physical features > defined by view focus. > > Best, > > Martin > > On 10/26/2021 10:58 PM, Øyvind Eide via Crm-sig wrote: >> Dear Florian, >> >> thank you for this interesting puzzle! >> >> Before I venture into concrete suggestions, allow me to ask some question in >> the form of assumptions you can confirm, reject, or discuss: >> >> The establishment of a hypothetical viewpoint is used to establish a >> location of the canvas. That means the following: >> >> 1. There is a 3D model of a landscape where each point (also those making up >> lines and polygons) are normal (x,y,z) coordinates in some coordinate system. >> >> 2. The hypothetical/assumed viewpoint of the photographer or the painter is >> a point in the same coordinate system. >> >> 3. Each point of the canvas (representing a painting or a photography) being >> put into the landscape is a point in the same coordinate system. Thus the >> canvas as a whole is an area in that coordinate system. >> >> If this is so, we might very well talk about something added to a >> pre-existing 3D model. If not, I would be happy to be enlightened and >> hopefully manage to dig further. >> >> All the best, >> >> Øyvind >> >>> Am 26.10.2021 um 10:28 schrieb Florian Kräutli via Crm-sig >>> <crm-sig@ics.forth.gr <mailto:crm-sig@ics.forth.gr>>: >>> >>> Dear all, >>> >>> I have a data modelling challenge I would need some advice with. >>> >>> We work with a collection of geographic depictions of Switzerland. This >>> includes photographs, paintings, prints, sketches, etc. We collaborate with >>> Smapshot <http://smapshot.heig-vd.ch/> who developed a method for aligning >>> landscape photographs with a 3D model of the physical landscape. An example >>> from our own collection can be seen here: >>> https://smapshot.heig-vd.ch/visit/204037 >>> <https://smapshot.heig-vd.ch/visit/204037> >>> >>> Using this method we can determine the possible viewpoint of a photographer >>> when taking a picture, or the viewpoint from which an artist may have >>> produced sketches of a landscape. In terms of data, we obtain the simulated >>> position and view of the photographer/artist as coordinates (lat/long), >>> altitude, azimuth, tilt, roll and focal view. >>> >>> I'm debating now how to model this obtained data in CIDOC-CRM. I would >>> suggest a S7 Simulation or Prediction for the process of using the Smapshot >>> app to determine a viewpoint of an image. This process P140 assigns an >>> attribute to a E36 Visual Item, namely that the E36 Visual Item (the image) >>> P138 Represents a view. What is this view? Can we say it is a E53 Place? Or >>> is there a more suitable entity for describing such a (simulated) view? >>> >>> One could also say that the data defines a E53 Place from which an image >>> has been created. However, while we can say this with some degree of >>> certainty for photographs, a painting of a landscape might have been >>> created using a combination of several viewpoints as well as, of course, >>> use of imagination on and off-site, so I would be hesitant to make a >>> statement about the physical location of an artist when creating a painting. >>> >>> I would be grateful for your input! >>> >>> All best, >>> >>> Florian >>> >>> _______________________________________________ >>> Crm-sig mailing list >>> Crm-sig@ics.forth.gr <mailto:Crm-sig@ics.forth.gr> >>> http://lists.ics.forth.gr/mailman/listinfo/crm-sig >>> <http://lists.ics.forth.gr/mailman/listinfo/crm-sig> >> >> >> >> _______________________________________________ >> Crm-sig mailing list >> Crm-sig@ics.forth.gr <mailto:Crm-sig@ics.forth.gr> >> http://lists.ics.forth.gr/mailman/listinfo/crm-sig >> <http://lists.ics.forth.gr/mailman/listinfo/crm-sig> > > > -- > ------------------------------------ > Dr. Martin Doerr > > Honorary Head of the > > Center for Cultural Informatics > > Information Systems Laboratory > Institute of Computer Science > Foundation for Research and Technology - Hellas (FORTH) > > N.Plastira 100, Vassilika Vouton, > GR70013 Heraklion,Crete,Greece > > Vox:+30(2810)391625 > Email: mar...@ics.forth.gr <mailto:mar...@ics.forth.gr> > Web-site: http://www.ics.forth.gr/isl > <http://www.ics.forth.gr/isl>_______________________________________________ > Crm-sig mailing list > Crm-sig@ics.forth.gr > http://lists.ics.forth.gr/mailman/listinfo/crm-sig
_______________________________________________ Crm-sig mailing list Crm-sig@ics.forth.gr http://lists.ics.forth.gr/mailman/listinfo/crm-sig
