Digital Imaging
The word “digital” seems to be all pervasive these days. It is often referred to in relation to technology, television and radio, but what is meant by digital imaging? Images have traditionally been painted, drawn, photographed or printed. Digitising these images make them easier to be distributed and used from one medium to the next. When an image is digitised, its digitised form is no longer in the real world; it exists just as zeroes and ones in computer memory.
Real images can be digitised by scanning or by digital photography, where colour and shade are translated into digital information and stored in computer memory. Once images could be digitised it became apparent that they could be manipulated. The colour, tone and contrast could quickly and easily be manipulated using an image manipulation programme. Using this tool, images could be improved and made more suitable for different media. An image that was painted, for example, may need to be slightly modified to be effectively mass produced by printing. The tone of the image may need to be lightened for the print medium. Similarly, if an image is to be reproduced on the web it may need to be manipulated so that it displays effectively in a web browser.
Digital imaging does not only apply to existing real world images. Image manipulation programmes can create original images from scratch without the need for any elements originating in the real world. All that is required is the imagination of the artist or designer using the programme.
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