Данни на покана за участие в търг
Статус
Дата на подаване
26/04/2019
Дата на отговор
03/05/2019
Език
Статус
Отговорено
Данни за въпроса
Предмет
QA Layer pp19
Въпрос
What is exactly meant with QA layer? Is it a raster?
Отговор
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.
Оригинален въпрос