Image Processing (part 2)
DOI link for Image Processing (part 2)
Image Processing (part 2) book
This chapter focuses on image processing laid out the general workflow and the broader considerations of composition, qualities and useful tools. In general, the manipulations in the practical assignments have been global, in so much that they have been applied equally to all areas. This worked well, in the main, as the subjects and our expectations were less demanding. Astro image editors exist for a reason and that is that because they are designed for a specific purpose without compromise, working on minute pixel variations in 32-bit or 64-bit images. They uniquely having a screen-stretch function that reveals the hidden problems and image, without changing the image data itself. In a photo editor, the two classic tools that stretch an image are Levels and Curves. Of the two, the Curves tool is more flexible and duplicates the highlight/mid-tone/shadow adjustments of the Levels tool.