What Is an Image Map?

Images are the basis of human vision, an objective reflection of natural sceneries, and an important source of human understanding of the world and humanity itself. "Picture" is the distribution of reflected or transmitted light of an object, "like" is the impression or recognition of a figure in the human brain that is accepted by the human visual system, photos, paintings, clip art, maps, calligraphy works, handwritten sinology , Fax, satellite cloud image, film and television picture, X-ray film, electroencephalogram, electrocardiogram and so on are all images. ^[1]

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Images are the basis of human vision, an objective reflection of natural sceneries, and an important source of human understanding of the world and humanity itself. "Picture" is the distribution of light reflected or transmitted by an object. "Like" is the impression or recognition of a figure in the human brain that is accepted by the human visual system.

Graphic processing software commonly used in the prepress field includes: Corel's

Because the graphics only need to save the algorithm and related control points, the storage space occupied by the graphics files is generally small, but when the screen is displayed, due to the calculation process of scanning and conversion, the display speed is slightly larger than the image Slower but better output quality.

Common graphic file storage formats, including:

PNG Image PNG format

PNG is a file format that compresses bitmaps without distortion (reversible) and has compatibility. It also provides a "patent-free" file format, and supports color wheel, grayscale, full color and other modes, as well as transparency processing. ^[4]

CDR Image CDR format

This format is a graphics file storage format dedicated to CorelDraw software;

AI Image AI format

This format is a graphic file storage format dedicated to Illustrator software;

DXF Image DXF format

It is a graphic file format of AutoCAD software. This format stores graphics in ASCII mode and can be called and edited by software such as CorelDraw and 3Dmax.

EPS Image EPS format

This format is a universal format that can be used for encoding of vector graphics, pixel images, and text, that is, graphics, images, and text are recorded in one file at the same time.

Image file format and processing software The most commonly used image processing software in the prepress field is Adobe's Photoshop software, which is widely used in image processing in various fields and almost occupies the dominant position of computer image processing software.

An image is made up of a sequence of pixels.

Common storage formats in computers are: BMP , TIFF , EPS , JPEG , GIF , PSD , PDF and other formats. among them:

BMP Image BMP format

It is a standard image file format in Windows. It describes bitmaps in a device-independent manner. Various commonly used graphics and image software can edit and process image files in this format.

TIFF Image TIFF format

This format is a commonly used bitmap image format. TIFF bitmaps can have any size size and resolution. It is recommended that images used for printing and printing be stored in this format.

JPEG Image JPEG format

It is an efficient compression format that can greatly compress images, save network resources to the greatest extent, and increase transmission speed. Therefore, images used for network transmission are generally stored in this format.

GIF Image GIF format

This format can be used in various image processing software and is a compressed file format, so it generally takes up less space and is suitable for network transmission. It is often used to store animation effect pictures.

PSD Image PSD format

This format is a standard image file format used in Photoshop software. It can retain the layer information and channel mask information of the image for subsequent modification and special effects production. Generally, the images produced and processed in Photoshop are recommended to be stored in this format to save the data information to the maximum. After the production is completed, it is converted into other image file formats for subsequent typesetting, imposition and output.

PDF Image PDF

Also known as a portable (or portable) file format, it has cross-platform characteristics and includes effective control information for professional platemaking and printing production. It can be used as a universal file format in the prepress field.