Image capture

Image capture

Image capture is process of capturing the still image, this can be achieved through more than one method:

Scanners - Scanners are a type of computer hardware used to make digital prints of photos and documents, allowing users to print, copy or fax the material. The basic function of a scanner is to make a digital copy of a picture or a document. The digital copies can then be manipulated by the user and printed, copied or sent digitally anywhere in the world. Scanners are most often used by the general public to make copies of photos or important documents.

Digital cameras - Digital cameras are the latest type of camera on the market, they are able to capture images digitally using a sensor, unlike their predecessor that used film to capture images, the images then had to be developed. Digital cameras have an optical system, typically using a lens with a variable diaphragm to focus light onto an image pickup device. The diaphragm and shutter admit the correct amount of light, just as with film but the image pickup device is electronic rather than chemical. Digital cameras can display images on a screen immediately after being recorded, and store and delete images.

   

Resolution - resolution is a measurement of the output quality of an image. The most common units to measure resolution include: PPI (pixels per inch), DPI (dots per inch), LPI (lines per inch), and SPI (samples per inch). PPI or "pixels per inch" is the term you will see most often when selecting a resolution for your images in photo editing software. Pixel is an abbreviation for "picture element." Millions of pixels make up the image of paper and text that you are viewing on your screen right now.

Storage - Storage can come in different forms, for example memory cards can be used for technology such as digital cameras, computers are able to house a built in hard drive. All memory devices such as hard drives and memory cards have various memory spaces, the larger the memory, the more files the storage device can hold. File size is measured in bytes, bytes represents a single character, digit , or symbol of data. Each byte is composed of 8 bits. A kilobyte holds 1000 bits, a megabyte holds 1,000,000 bytes, a gigabyte holds 1, 000,000,000 bytes and a terabyte is 1,000,000,000,000 bytes.