It would be amazing if the LC folks created an ImageMagick wrapper so that we could use it as an external or widget!
Sent from my iPhone > On Mar 18, 2017, at 11:30 PM, Mike Bonner via use-livecode > <[email protected]> wrote: > > You could write a small app just to do the processing (or use a web server > with an lc script to process) break it into chunks, and spawn > processes/server requests to offload the work maybe. Though imagemagick > would be a pretty awesome solution if it can be made to do what you need. > > On Sat, Mar 18, 2017 at 4:02 PM, Jonathan Lynch via use-livecode < > [email protected]> wrote: > >> You could put the entire ImageMagick set of files into custom properties, >> then, when your app first opens, look to see if ImageMagick is present. If >> not, then have your app save the ImageMagick files in the same folder as >> your app. >> >> I have done that sort of thing before - big files, but works fine. >> >> If you can find a Javascipt library that does what you need, your mission >> would be easy :) >> >> Sent from my iPhone >> >>> On Mar 18, 2017, at 5:03 PM, [email protected] wrote: >>> >>> With 10 million pixels, comparing 3 different base colors (RGB), and >> checking both upper and lower bounds, that comes to 60 million comparisons. >> That is an awful lot for a scripted environment. >>> >>> You would need to make an external (and, frankly, the LC instructions on >> making desktop externals do not work for modern versions of LC and Visual >> Studio). >>> >>> For a project, I was able to successfully use ImageMagick as a command >> line image processor. It took a few seconds, but much better than what LC >> took. >>> >>> ImageMagick is pretty flexible and might give you what you need. I was >> using it for green screen image extractions. >>> >>> Sent from my iPhone >>> >>>> On Mar 18, 2017, at 2:20 PM, Peter Reid via use-livecode < >> [email protected]> wrote: >>>> >>>> I've got an app that allows the user to display an image using a >> variable number of colours (2-24 colours). In addition, the user can >> specify upper and lower thresholds so that all pixels below a specified >> value are displayed using a colour such as black and all pixels with values >> above a specified value are displayed using a colour such as red. Pixels >> with values between the thresholds are displayed using the specified colour >> range of 2-24 colours. The images can consist of up to 8-10 million pixels, >> they are rectangular and can be in a landscape or portrait orientation. >>>> >>>> Whilst I have this working the code that manages the changing of the >> number and use of colours in an image is rather slow. This is despite me >> using the "repeat for each" loop structure and lock the screen wherever >> possible to get the maximum speed! >>>> >>>> Does anyone have any clever algorithms, code, add-ons, etc. that can do >> this kind of thing in a flash?! >>>> >>>> Thanks >>>> >>>> Peter >>>> -- >>>> Peter Reid >>>> Loughborough, UK >>>> >>>> >>>> _______________________________________________ >>>> use-livecode mailing list >>>> [email protected] >>>> Please visit this url to subscribe, unsubscribe and manage your >> subscription preferences: >>>> http://lists.runrev.com/mailman/listinfo/use-livecode >> >> _______________________________________________ >> use-livecode mailing list >> [email protected] >> Please visit this url to subscribe, unsubscribe and manage your >> subscription preferences: >> http://lists.runrev.com/mailman/listinfo/use-livecode >> > _______________________________________________ > use-livecode mailing list > [email protected] > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list [email protected] Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
