One of the human attraction to enjoy an object is a certain picture (image). Digital images is a form of document files generated by electronic devices or digital media. Results of digital image technology being developed
One of the human attraction to enjoy an object is a certain picture (image). Digital images is a form of document files generated by electronic devices or digital media. Results of digital image technology continues to develop into a variety of formats to meet the needs of non-print or print. Fortunately, today there are many software tools for creating and processing (manipulation) of a picture, both free (freeware) or paid (shareware). Printer technology is also increasingly sophisticated and innovative.
Some designers poured characters and ideas in the graffiti-graffiti hand, further in-scanning (digitizing) to the computer and the results? Processed? as needed.
To get the best image results, need to understand the characteristics or the ins and outs of drawing and color. For example, when enlarging the size of the image but the results become cracked or faded (blur). This may be due to the image? Original? though we are of type raster or insufficient resolution. Another example is that not all support to display images on the web. If imposed, the web becomes unwieldy and difficult to see.
Another example is when a friend print an image of type gif or png then the result is often less satisfactory. Eps and Tiff is a popular file format for business because it has support for color printing is more complete.
Vector vs. (Bitmap) Raster
In the process of making digital images, is sometimes required to convert from raster to vector or vice versa. For example, when creating a logo with special effects and printing images on paper.
Broadly speaking, the image is divided into two categories.
1. Vector Applications
Adobe Illustrator, Corel Draw, Macromedia Freehand
2. Applications Bitmap (raster)
Adobe Photoshop, Corel Photopaint, Macromedia Firework
The vector is a series of mathematical instructions that are translated into shapes, lines, and other parts of any part of which are interconnected in a picture. The file size is relatively small and if it changed in size (shown below) the quality is fixed. Example vector file is. Wmf, swf, cdr and. Ai. And is often used in creating logos, animations, illustrations, cartoons, clipart, and so forth.
Bitmap is a type of raster images. Relying on the number of pixels in a particular unit. The closer the pixels, the better the image quality. Conversely, if forced to be enlarged will look broken (shown below). Large files produced tend to be large. Examples of bitmap is. Bmp,. Jpg,. Gif.
CMYK vs. RGB
RGB stands for Red-Green-Blue, the three basic colors which are universally used as a benchmark color (primary colors). With a base of the RGB, we can change the color into the code numbers so that color will appear universal. Standard benchmark like this? Compulsory? because in a professional context, we can not say, "I want the primary color blue website." Well, what kind of light blue? Is it like paint blue bird taxi? Or like a clear sky? Or salted egg color? Persib Or blue?
With the standard RGB, we can say, "What is meant is the color R: 115? G: 221? B: 240." With other languages, the color blue that we want to have elements of 115 red, 221 green, and blue 240 degrees. Range of numbers for each dimension of color in RGB is 0-255. Thus, the RGB code 0? 0? 0 equal to black color and 255? 255-255 is the color white. Special colors on the new Internet capable of recognizing RGB color standard. Mode").">To check whether a file-based RGB or CMYK image, please check with Photoshop application (click the menu "Image> Mode").
CMYK is a print industry standard today. Short for Cyan? Magenta - Yellow, and K represent the color black. Why K? not the B (black)? Apparently the reason is quite simple, so that people do wrong with a B (Blue) in RGB.
Same as RGB, CMYK also relies on the standardization of color into the coordinates. Rangenya between 000-100 so that the presence of elements of K is critical. Regardless of its CMY coordinates, during his K-100 then that color will be black.
CMYK is a standard-based color pigment-based, conform to industry standard printing. Until now, the world of print-printing using four basic colors to create any color. To you who have a color printer, consider the color ink cartridge, typically based on CMYK.
While the internet / web and monitors use RGB color. These standards are light-based, not pigment. What's the difference? Instead of just the basic colors used, but the type of color alone.
Light-based colors (RGB) when mixed would be a white color (explain each), while pigment-based colors (CMYK) if mixed would be a black color (darken each other).
So, in order not disappointed, for in-print images should be first converted to CMYK (except on modern printers that her profile can be arranged). And the image created is displayed on the screen must be converted first to RGB.
Web or Print
The main thing in making the graphics for the web is to create a file as small as possible. Web images need enough RGB images with a resolution of 72 dpi for printing needs while using type (CMYK) with a resolution of 300 dpi.
Standard resolutions are common and widely accepted. That amount is the most reliable resolution to be seen with the human eye.
If the higher resolution, the human eye will not be able to know the difference. Therefore, 300 dpi is considered sufficient value to be printed. As with the text, it takes a bigger resolution, that is 400 dpi. Given the text usually consists of one color.
Resolution and size greatly affects the amount of files. For example, in a CMYK image with size 5 x 5 inches and 300 dpi resolution. So the file size is about the size (5 x 300) x (5 x 300) = 600 x 600 = 360 000 = 8.58 Mb (Please check combinations of these with Photoshop).
Pixel
Is an individual point of a color. Another meaning is the smallest unit of digital information contained in an image. Any photo or image composed of thousands or millions of color pixels. You can see the pixel color of an image by performing image magnification (zoom).
Overview of image formats
JPEG (Joint Photographic Expert Group) or JPG. This format is designed for images with 24-bit color depth. Is the standard and most popular files on the internet and print media.
GIF (Graphics Interchange Format). Limited in the 256-color GIF only, but one color can be made? Transparent? so that we can put a picture with the background color is different. Moreover, it can be used as an animation.
Around August 1999, there was a long discussion about the use of GIF format in the world of Internet. Why not? Unisys as the patent holder GIF compression method (LZW Compression) suddenly announced the withdrawal fee of $ 5,000 for each site owners and developers who take advantage of the GIF image format. Whereas the GIF format is already global.
PNG (Portable Network Graphics). A consortium of various digital companies to develop a new format called PNG. Is an alternative way of example GIF with LZW image compression method. Now it is all internet browsers already support it.
This format has the privilege to store a variety of color depth. This new format is not erode the 'information' colors in the image as is done JPG. PNG also allows 'transparent'.
A common choice in exporting images in PNG format is PNG and PNG-8-24. That is roughly similar to our choice when there is the option to export in GIF depth 3 (mean 8 colors), 4 (16 colors), or 8 (256 colors).
TIFF (Tagged Image File Format). Resulting file is. Tif. This format is suitable for desktop publishing.
BMP (Bitmap Graphics). The format of this ancient and enduring has been known as DOS and Windows operating system until now. Resulting file is. Bmp
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