On 02/12/18 04:06 AM, Joachim Durchholz wrote: > not sure what the right terminology is. > What I want to do is this: > - I have multiple images of the same scene. > - All are at the same settings. > - There might be small translations/rotations between images. > - I want anything removed that's present in just one or two images. > - There's a limit of maybe 10 images I can have per scene. > - In the end, this going to be for ~400,000 different scenes. > > Q1 (not related to Darktable): > Is there a standard terminology for what I want to do?
I have read about this technique, used with multiple takes of a 'monument' to eliminate the 'people walking past' that occur in just one or two takes. It seems related to HDR in that it uses the same tools for overlaying 'the same shot' such as Linux's "hugin". I realise that there are tools that claim to 'hdr-ise' from a single show by playing with luminance and brilliance. Don't pay attention to those . .... > Q2: Is Darktable the right tool for the job? I would not think so. If I were you I'd go to somewhere like the DPReview chat lists and look under HDR or see what other list headings they have. https://www.dpreview.com/forums Or the Linux Hugin discussion groups. > ... > * Align images, at sub-pixel accuracy. > * Take the median for each pixel. > * Image alignment can be done with Hugin, median-taking with ImageMagick, but > I > couldn't get this to work; too many details to configure, and do one thing > wrong > and you get a totally different result than what you wanted. I don't see why you dragged ImageMagick into this[1][2]. And yes, 'too many details to configure' because that is what you have demanded of the project. > Any feedback appreciated. I think your mistake is in trying to define *single* a tool to do everything possible as 'all in one'. Slice this up into smaller stuff. Do what you can with that you can and gain experience 'with the small stuff'. Yes, you have 'pages' that present difficulties. Leave those for later when you are more experienced. When you can demonstrate applying the 80/20 rule and have that 80% you will be feeling more confident and have a better feel for many of the details. Perhaps of the 20%, 80% of that will succumb to 'established' tools and techniques that you will, by then, be aware of, leaving 20% of 20% that are actually difficult and have have to be 'hand mangled'. I say this proportion basted on other projects in other fields of my life; there seems to be something in the nature of human project that means the 80/20 rule works "all the way down". [1] Hugin is another of the 80/20 things. Yes it has a learning curve (which is minor compared to Darktable) but when you have mastered it you will find that many of those settings become 'obvious'. [1] I've been shell scripting most of my life and I'd consider ImageMagick to be too awkward to work with for all bt trivial operations. -- You can tell whether a man is clever by his answers. You can tell whether a man is wise by his questions. -- Naguib Mahfouz ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
