Next: 5.8.3 Picture Frame Up: 5.8 Tasks Previous: 5.8.1 Capture Contents

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5.8.2 Mosaic

The items in this menu are discussed in appalling detail in Chapter 3.

`One Point`
  Join two images left-right or top-bottom with a simple translation. Mark a point on each image to be joined (open image view window, Ctrl-left-click, drag to position), then click on the mosaic button. The operation performs elaborate tie-point adjustment, so your selection of a common feature does not have to be exact.

  The `Manual` versions do not perform automatic tie-point correction and are useful when joing very difficult images.

`Two Point`
  Do a join, but allow the right-hand (or bottom) image to rotate and scale if it will improve the match. You need to pick two points on each image.

`Balance`
  Break a mosaic apart, examine average pixel value in the overlap regions, adjust brightness to match, and reassemble. This only works for images which have been produced just by mosaic joins! If you've done anything else to the image since loading it, the balance will fail with a mysterious message.

`Manual Balance`
  Adjust the brightness in a set of masked areas to match. Useful for removing shadows.

`Rebuild`
  Use this to mosaic up one set of files based on joins you made in another. Breaks a mosaic part to component files, performs a string substitution on the file names, and reassembles.

`Clone Area`
  Select over- or under-exposed pixels in one image and replace them with the corresponding pixels from another image. Useful for removing lead numbers used to identify X-ray plates.

  The function operates on two 8-bit mono images. Move and resize the region on the first image to define the area around the white number. Move the region on the second to overlapping area. A section of the area on the second image is cloned and blended into the first image. The amount of the defined area to be cloned in defined by a slider within the output image.

Next: 5.8.3 Picture Frame Up: 5.8 Tasks Previous: 5.8.1 Capture Contents