Non Destructive Image Editing – Part 1

THURSDAY, AUGUST 25, 2011

Non-Edstructive Image Editing

	Imaging 2
h	Non-Destructive Image Editing
Name
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Instructions	Read the article provided – ‘Non-Destructive Imaging: An Evolution of Rendering Technology’  by Peter Krogh - and answer the following questions in the space provided.
Questions	Part I – The Evolution of Non-Destructive Imaging Define ‘Non Destructive Imaging’ Image processes where the source image may be adjusted in a way that leaves the original data intact.                                                                                                                                                           List four challenges introduced by digital photography :- Creation of large numbers of photos.                                                                                                                                                 Applying identical adjustments to many photos in one operation.                                                                                                                                                 Interpretation of a single source image in multiple ways (B&W, Colour).                                                                                                                                                 Taking advantage of rapid evolving imaging tech. to reinterpret images with more capable software of the future.                                                                                                                                                 What is meant by a ‘Derivative File’ ? A version of the photo file that has had some adjustments incorporated – it is derived from the original.    (Save As)                                                                                                                                                      What are two problems with using ‘Save As …’ to create derivative files ? Confusion with naming variations trying to find the file you are looking for.                                                                                                                                                 Takes up more storage space since it has to save another copy of the whole file.                                                                                                                                                 What is ‘Self Referenced Non Destructive Imaging’ ?  The source image is wrapped up with a set or many sets of instructions for rendering the photo. Adjustment Layers.                                                                                                                                                                                                                                                                                                                   List two advantages of Self Referenced NDI over the use of Derivative Files :- Image takes up less storage space than having a duplicate.                                                                                                                                                 It is easy to see what has been done to the file by viewing the adjustment layers which can be turned on and off.                                                                                                                                                 Define ‘Parametric Image Editing’ :- Editing images by creating instructions or parameters parametric image editing (PIE).                                                                                                                                                          What is the difference between a Live Rendering and a Fixed Rendering ? Live Rendering uses smaller proxy versions to display changes that are kept in separate instructions (metadata) then when ready apply them to the original Hi Res copy. Fixed Rendering converts the RAW mosaiced image into a form of a JPEG preview. This is because most RAW, other than DNG, are proprietary and undocumented and third-party software should generally not make any alterations to a raw file because of the possibility of corrupting the file.                                                                                                                                                                                                                                                                                                                   List three advantages of NDI :- Multiple photo manipulation. Creating instructions for adjustments makes it easy to apply settings made for one photo to many others very quickly.                                                                                                                                                  Unlimited undo. The processing instructions are easy to change to create a different interpretation of an image.                                                                                                                                                 Space savings. Instructions are a lot smaller than pixels to store, the storage requirements are greatly reduced.