Id-Dettalji tas-Sejħa għall-Offerti
L-istatus
Id-Data tas-Sottomissjoni
26/04/2019
Id-Data tat-Tweġiba
03/05/2019
Il-lingwa
L-istatus
Ingħatat Tweġiba
Id-Dettalji tal-Mistoqsija
Is-suġġett
QA Layer pp19
Mistoqsija
What is exactly meant with QA layer? Is it a raster?
It-tweġiba
03/05/2019
A QA layer of a raster ‘data-file’ is typically also a raster. It must have the very same format and spatial specifications as the data-files. Every data pixel shall be accompanied by the relevant QA information. For storage efficiency the QA information is typically bit-encoded (i.e. several quality related parameters are stored inside a 16bit string, which need to be encoded before becoming usable). Whether the QA layer shall be stored in a separated file as a layer inside the data-file will be discussed during the initial phase of project implementation. A QA layer is expected to deliver all the needed and relevant information about the quality of the actual data-file (pixels). We decided not to define QA information content too strictly, in order to allow tenderers to elaborate the most comprehensive and appropriated approach for the specific proposal.
Il-Mistoqsija Oriġinali