1, About digitizing

Digitizing or embroidery designs is representing an object, image, document or a signal (usually an analog signal) by a discrete set of its points or samples. The result is called "digital representation" or, more specifically, a "digital image", for the object, and "digital form", for the signal. McQuail identifies the process of digitalization having immense significance to the computing ideals as it "allows information of all kinds in all formats to be carried with the same efficiency and also intermingled"

Analog signals are continuously variable, both in the number of possible values of the signal at a given time, as well as in the number of points in the signal in a given period of time. However, digital signals are discrete in both of those respects, and so a digitization can only ever be an approximation of the signal it represents.

A digital signal may be represented by a sequence of integers. Digitization is performed by reading an analog signal A, and, at regular time intervals (sampling frequency), representing the value of A at that point by an integer. Each such reading is called a sample.

A series of integers can be transformed back into an analog signal that approximates the original analog signal. Such a transformation is called DA conversion. There are two factors determining how close such an approximation to an analog signal A a digitization D can be, namely the sampling rate and the number of bits used to represent the integers.

2,Digitizing history

If you are interested in embroidery digitizing moving pictures (e.g., movie films, videotapes, etc.), then you will be interested in this article. The article is about the work at the Packard Campus of the Library of Congress (LOC) National Audio-Visual Conservation Center. This...

structure contains a vast number of recordings preserved on a variety of media, and in an almost limitless number of formats including, film, tape, disc, wire and cylinder.

The physical size of the complex itself is staggering—it measures in at 415,000 square feet (that’s equivalent to more than seven football fields)—and contains literally millions of items. There are actually four building components: a collections storage building, conservation building, the “nitrate vaults” and a central plant.

Although it’s still a work in progress—10 years have passed since its inception—some areas are operational and additional ones are coming on line at regular intervals. It’s currently staffed with 60 government workers; a number that will more than double when all systems are installed and running.