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UNIT 1. DIGITAL IMAGE

Activity Summary. Today
to find in the digital age (digital photography, digital audio, digital video, represented by a series of electrical pulses based on a numerical system composed of zeros and ones) and the Internet, it is important to understand and consider all information that can be created through it and also the world allows us to exchange information and in turn facilitate the storage, shipping and replay it. Differences

Digital-Analog.
analog format consists of an infinite number of data points, making it impossible to make an exact copy of the original, so the copies being made of the same content are deteriorating. An example is video in VHS or Betamax tapes. Another example is an analog format to acetate disc used to store sounds. There are also photographs of traditional photographic paper.
These terms analog and digital were introduced into the daily lives of people with the coming of new technologies. However, both have their main features: Digital copies are perfect, and can be copied thousands of times without error, and stored materials where such information is not suffering from physical exhaustion (CD ROM, pendrivers, among others). Analog copies are perfect since it is impossible to make an exact copy of it (for their infinite number of data points), these in turn can wear because the material where the information recorded or stored will deteriorate over time (audio tapes and vhs vinyl disk etc.).

Basic Types of digital images:
-bitmap (points or pixels) can store large files depending on the size of the image to its quality or definition. Where else should consider the resolution of it, which is given by the density of dots, or pixels, which have an image on a particular measure of length (an inch or an inch) and where the density or the size of the image involves an important role, because such images have a structure containing data that allows them to be stored in readable form for the type of program that generated it and thereby establish the use of a certain format (BMP, GIF, TIFF, JPEG, PCX, IFF, among others, which use a bitmap).

-Vector (geometric lines) can store files very compact, does not depend on the size of the image to its quality or definition (except for a picture.)

Beyond all this, it is necessary to consider every element that underlies or involves the world of digitization, as the same We will help the development in the current environment of new information technologies and communication.