https://wiki.hoku.emelibrary.org/ 2026-06-26T20:25:25+00:00 https://wiki.hoku.emelibrary.org/ https://wiki.hoku.emelibrary.org/_media/wiki:logo.png text/html 2025-06-26T09:10:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.hoku.emelibrary.org/basic_level:modifications:append?rev=1750929044&do=diff Modifications – Append A few image processing modules require multiple input images. These modules combine one image with another. The arguments dialog box for these modules require that you specify which image is attached to which link. [ ] The “Append” module that takes two inputs. As seen below, the ”input” image is specified to be on the left side of “Append” and the image to be appended is specified as on the top. In this example, the output image will be a combined image with the in… text/html 2025-06-26T09:25:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.hoku.emelibrary.org/basic_level:modifications:crop?rev=1750929949&do=diff Modifications – Crop Although shown here separately, “window” and “bands” arguments can be specified at the same time. The “Crop” module reads an image on it input, and outputs only a portion of it. Above, a rectangular window is specified. Only the pixels within that window will be passed through “Crop”. The window consists of four numbers, the x and y locations of the upper left corner, followed by the width and height. text/html 2025-06-26T09:28:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.hoku.emelibrary.org/basic_level:modifications:rotate?rev=1750930083&do=diff Modifications – Rotate “Rotate” can rotate an image in a specified number of 90° increments, or by an arbitrary number of degrees. It can also perform a mirror image, horizontally or vertically. The “orient” option will read the TIFF “Orientation” flag in the TIFF header and either implement the specified rotation or do no rotation and remove the flag.