On Tuesday 21 July 2009 01:58:33 pm James Cobban wrote: > I am trying to combine images scanned from microfilm in the case > where the lens on the microfilm scanner is too powerful to permit > me to scan an entire page into a single image file. I believe > that this application is similar to trying to create a landscape > from multiple photographs. > > I scan the original into a PDF containing multiple images. I > then open this PDF as layers. I have been able to rearrange the > layers, raise and lower them, and merge them to create a single > image file, but I have 2 problems: > > 1) Sometime the key spots within the layers which I need to line > up prior to merging the layers are not right on the edge of > either layer. To perform the alignment I need to make at least > the outer portion of the upper layer partially transparent so I > can properly align them. > 2) Once I am finished the contrast between the two layers is > generally such that the edge of the upper layer is clearly > visible in the merged result. Once again if I could make the > outer edge of the upper layer transparent on a gradient to fully > transparent at the edge, I could make the edge invisible. I > think of this operation as "feathering" the layer, but searching > through the documentation and web guides I can only find > "feathering" as applicable to images, not layers. > > The following is an example of the result I currently have: > > http://www.jamescobban.net/Ontario/images/B1912_33007.jpg > Combined image from microfilm.
This is described well in "The Artist's Guide to Gimp Effects", page 47. Basically it involves applying a gradient to a layer mask. -- John Culleton Create Book Covers with Scribus/e-book $5.95 http://www.booklocker.com/books/4055.html _______________________________________________ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user