Print Encyclopedia: Aspects of digital image technology

With the continuous development of digital technology and application of real-life lot of information in digital form can be used to process and store data, digital images in digital form is that stored and processed images. Calculator can be used it is often not possible with image processing technology processing, you can transfer it to the Internet can be copied repeatedly without distortion.





Print Network HC With the continuous development of digital technology and application of real-life lot of information in digital form can be used to process and store data, digital images in digital form is that stored and processed images. Calculator can be used it is often not possible with image processing technology processing, you can transfer it to the Internet can be copied repeatedly without distortion.





One way to get images With many images of files using the simulated images, such as 35mm slides, film or reflective film transmission. To obtain a digital image to the image in pixels into digital information to be processed in the calculator and processing. The simulated images into digital images of work, usually by Scanners To complete. Scanner measured from the picture issued or reflected light, followed by recording spot value and generate a color or black and white digital copies. This image is translated into a series of figures on the hard disk is stored in the calculator, or other Electronic Media, such as removable hard drives, CD or recording tape and other graphics. Once the image is converted into digital files, it can be electronically transferred from one calculator to another calculator.





Need to understand the terminology Simulation image?? A continuous form of stored data. Such as the traditional camera at the beach photos are simulated images.





Digital image?? Binary digital processing of data (such as the pass and off), such as a digital camera digital photos.





Scanner?? A digital input device to produce a copy of bit-map for electronically processing.

II Design Planning methods of digital

A wide range of software applications can support digital image processing, such as produce digital graphics, modify digital images, such as page design some sort of technical process, and the combination of a number of pixels in an image.





Generated through the application of the software image is divided into two broad categories, namely, vector graphics and bitmap images.





Often used for line drawing vector graphics, logos, and any statement drawing a clear need for a smooth transition to the edge of the image. One advantage of vector graphics is that they can be any enlargement, reduction without loss of detail and clarity, it will not distort.





Bitmap image is usually a picture or photo of a class of images, such as images obtained with a scanner. Bitmap image using the scanner software in a picture message "image" to the grid graph corresponding virtual space, filled with color pixels in each small cell, thus the composition of the entire image. And vector graphics difference is not very good if the image quality bitmap images can not be arbitrarily enlarged. When the image to expand, the pixel grid corresponding increase in size, clarity declined. Therefore, in order to obtain sufficient image detail, select the scan size of the bitmap image is important. Bitmap image file is usually much larger than the vector graphics file, because the regeneration of images need more information.





Used to describe the graphic image file format, there are many, two of the most widely used is the TIFF (TaggedImage File Format) format and EPS (EcapsulatedPostscript) format. TIFF is a common bitmap image format, while vector graphics are similar to the EPS file. Different types of graphic image files can be combined together in a common file format to the design and layout.





In the design layout is completed, all pixels are in one file, this file can contain stored in different file formats for vector graphics and bitmap images. This file can be converted to the required output device raster graphics format



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