![]() There are many different open source licenses but they all must comply with the Open Source Definition - in brief: the software can be freely used, modified and shared. Programs released under this license can be used at no cost for both personal and commercial purposes. Open Source software is software with source code that anyone can inspect, modify or enhance. ![]() Freeware products can be used free of charge for both personal and professional (commercial use). Corrective vertical scaling should not be necessary, however.Freeware programs can be downloaded used free of charge and without any time limitations. The further procedure corresponds to the procedure for creating a landscape from your own photos, in particular with regard to removing the sky and the correct alignment of the panorama as well as its integration in Stellarium. Only the average (mean) EV value in the Fast Panorama Preview has to be increased if the Hugin panorama threatens to become too bright for a Stellarium landscape. A photometric optimization is not necessary, rather set EV = 0, Er = 1 and Eb = 1 for all screenshots. The spatial optimization should not cause any problems, since the individual screenshots are excerpts from one and the same completed panorama. After masking the exit button from each screenshot, the fitting process can be started, in the course of which the correct HFOV is also determined. Since there can be no parallax or head tilt errors with the screenshot technique, all recordings must be assigned to the same lens (Lens 0), which is to be set to the "rectilinear" type (if you do not change the angle of view in 360cities in the middle of the screenshot Series, you have to load the corresponding screenshots into a new lens or start over). Loading the screenshots into Hugin, initial fitting and further optimizationĪll screenshots are now loaded into a new Hugin project like individual photos. In full screen mode, only the exit button is left as a disruptive element, which can finally be masked out in Hugin. Screen shots of areas that only show the sky are not required.ĭuring the screenshots, as soon as the HFOV is set, “Hide / Show Controls” should be switched to “Hide”, in particular to switch off the reference arrows to neighboring panoramas. A screenshot is sufficient for the nadir area if the nadir has been moved to the center of the image beforehand To be on the safe side, you can take another nadir screenshot crossed by 90°. The procedure corresponds to the recording process for real-image landscapes, only that the "recordings" are now made virtually using screenshots, which are rectilinear with the selected krpano setting, just like 35mm camera recordings. Once the set field of view angle has been used for a screenshot, it must not be changed for the entire project! All screenshots of the project must therefore be taken in one go. HFOV = 270° * Horizontal resolution of the screenshots / target resolution of the Stellarium landscape However, if the target resolution is very high, the HFOV angle must be smaller the formula The field of view angle (HFOV) can only be set approximately and should be between 60° and 70°, but in no case more than 100°. The display mode "Normal View", which corresponds to the gnomonic (rectilinear) projection, must be set for the screenshots. The image material required for the production of the Stellarium landscape with Hugin is obtained by means of screenshots from viewing the 360cities panorama in full screen mode.ģ60cities uses krpano as a viewer to display the panoramas. Producing the input image material for Hugin ![]() If the original panorama has a resolution of 10000x5000 pixels, a spherical stellarium landscape derived from it has a maximum possible resolution of 8192x4096 pixels (next smaller integer powers of 2!). In order to maintain the sharpness of the original image, the target resolution of the Stellarium landscape must not be higher than the resolution of the source panorama from 360cities. Set the target resolution of the Stellarium landscape Many 360cities panoramas are neither aligned nor do they offer any clue for an alignment that you can carry out yourself and are therefore ruled out from the outset. The creation of a Stellarium landscape from a 360cities panorama only makes sense if the exact geographic coordinates of the panorama site are known and the panorama has been correctly oriented to the cardinal points or when this can be easily done by yourself based on recognizable landmarks with the aid of and a tool for calculating great-circle distances, e.g. Stellarium landscapes can only be created from fully spherical 360°x180° panoramas and not from cylindrical panoramas, unless the natural floor area is dispensed with and the area that does not exist in the cylindrical panorama is filled with an artificial image. ![]()
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