hi all, I'm currently dealing with a lot of clouds (when traveling quickly through many locations I have no other choice than take the meteo conditions as they are). Since the introduction of Celeste (that works great, thanks Tim!) this is no longer an issue for the proper alignment and stitching of everything but the clouds. However in multi- rows high resolution shots the clouds end up being an issue at the blending stage. The rows become visible.
The lazy way to deal with this is to mask out the sky and replace it with whatever photo editor is at hand, but the result inevitably looks artificial (shade zones on the mountains and so). When Tim was coding Celeste, we sparred about what kind of mask should Celeste generate around the clouds, if any. Now, having such a mask could be useful for the following idea, assuming the clouds movement is constant throughout the photoshooting: 1. generate control points for the static parts in the image. Use them to position the images in relationship to one another and create the master panoramas, using Celeste to prune CPs from the clouds and mask the coulded areas. 2. generate control points in the clouds (area masked by Celeste) and calculate the translation related to the positioning in 1 (which is the translation vector multiplied by the time differential between the reference image and the current image) 3. use the translated cloud images to generate an additional panorama of the sky 4. mask the sky out from the static panorama and add the sky panorama as a layer there will be some areas of the sky that will be "empty" (e.g. when a cloud moves behind an object or out from it), but those will be much smaller areas to deal with in an image editor than generating the sky artificially or dealing with the shift across all images. to do this we need: - an additional category of CPs to compose the sky panorama (sky-CPs) - a measurement of the displacement of those CPs related to the position of the image in the static pano - some math to average / optimize the displacement measures - some glue/script to generate the second panorama - a tool to mask the sky from the rest of the panorama (I don't think that Celeste's mask are fine enough for that). - some glue/script to add the mask and the sky to the resulting panorama. does this sound logic? or have I missed something? should I record this as a feature request? maybe a future GSoC project? Yuv - --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group. A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/hugin-ptx -~----------~----~----~----~------~----~------~--~---
