The beauty of Matlab resides in its libraries (here the image processing toolbox), therefore all the above can done with maybe 100 lines of code by people like me who have no clue about software engineering. There is room for improvement with color negatives, but as I hardly shoot any I did not invest much time in doing this yet. The thing works quite well with BW negs and slides. the histogram as far to the right as possible, without clipping erase the rest.ĥ) Here come my Matlab script: it crops the black edges (my scans are always a bit smaller than the full frame of the digital camera, and often have a different aspect ratio) subtracts the dye color of the neg (if needed) inverts the negative (if needed) normalizes the histogram exports into an output file.Ħ) Then I reimport into an image processing software for further processing if desired. Any raw converter will do here)ģ) Out of all "identical" scans, select the shot with the most dynamic range i.e. I am using my own workflow based on a self-written Matlab script.ġ) Scan with exposure bracketing, I usually take up to 9 exposures at 2/3 EV apart.Ģ) Import the raw files into the usual processor (formerly Capture 1, moved to Phocus since I have the CFV 50c ii back - I think Capture supports your GFX.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |