Process History Unlimited Undo & Redo Tracking

The Process History window in ImagesPlus is used to track enhancement operations and also assign blending modes, opacity, and masks to the operations. Stretch, smoothing, sharpening, deconvolution, color adjustment, and geometric operations are inserted into the process history list as they are applied to an image. The current operation in the process history list is pointed to by >>. The Undo and Redo toolbar buttons are used to scroll the current operation pointer >> backward and forward through the process history list. The current operation can also be set using a double-click on the operation in the process history window. Operations can be inserted, modified, deleted, and copied to and from a process list. A sequence of operations with blend modes, opacity, and masks can be saved and loaded from a project file. An example of a processed image with its process history list is shown below.

Processed image with its Process History tracking window. The current operation pointed to by >> is Adaptive Richardson-Lucy deconvolution.

Process History Basic Operation

Step 1

Initial image as it appears when first opened. Process History window is on right. The first line of the Operation list of Process History is always a Read operation when an imaged is opened. Operations that create a new image like Mosaic, Image Math, Combine LRGB, or Mix LRGB & Hue will have a descriptive first line such as New Image, Image Math, Combine, or Mix LRGB & Hue.

Step 2

Digital Development is applied to the initial image. The Digital Development operation is inserted after the initial Read and maked as the current operation by >>.

Step 3

Micro Curve is inserted after Digital Development and is the current operation pointed to by >>.

Step 4

The Undo toolbar button or a double-click on Digital Development in the Operaion list of Process History is used to set Digital Development as the current operation. The Break-Point slider on Digital Development is used to increase brightness.

Step 5

Micro Curve operation is applied to the modified Digital Development image using the Next Command on the Process History window. Note that the image now appears a little to bright. Micro Curve could now be adjusted. The next step 6 will insert a Levels operation after the modified Digital Development operation.

Step 6

Levels is inserted after Digital Develoment to set the black point. Micro Curve is no longer needed and will be deleted in step 7.

Step 7

To delete Micro Curve from the Operation list select Micro Curve in the list then right-click and select delete.

Step 8

A mild Multiresolution Smooth-Sharpen opertion is applied to the image and inserted in the operation list after Levels.

Step 9

The Undo, redo, and double-click on an operation in the list can be used to scroll through the changes to the image and display the operation window used at each step. Operations can be modified, deleted, inserted, or copied to a Process History list of a different image. Steps 10-12 show how to copy, paste, and apply operations from one image to another.

Step 10

Three operations selected for copy.

Step 11

A new image is opened and the Read operation is selected. Paste will insert the copied operations after Read as shown below.

Copied operations inserted after the Read operation. The red text indicates that the new opereations need to be applied to the image. Step 12 applies the operations to the image.

Step 12

The second image has the same operations applied.

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