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Editor to share with you what format tif refers to, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to understand it!

Tif is a flexible bitmap format. Tif is the extension of TIFF (label Image File format). It is one of the commonly used formats in graphics and image processing, which is mainly used to store images including photos and art pictures. TIFF, together with JPEG and PNG, has become a popular high-level color image format.

Tif is an extension of TIFF (tag Image File format) and is a flexible bitmap format.

Label Image File format (Tag Image File Format,TIFF) is a flexible bitmap format, which is mainly used to store images, including photos and art pictures. It was originally developed by Aldus and Microsoft for PostScript printing. TIFF, along with JPEG and PNG, has become a popular high-level color image format.

TIFF format is widely supported in the industry, such as Adobe's Photoshop, The GIMP Team's GIMP, Ulead PhotoImpact and Paint Shop Pro image processing applications, desktop printing and page typesetting applications such as QuarkXPress and Adobe InDesign, scanning, fax, word processing, optical character recognition and other applications.

Adobe, which obtained the PageMaker printing application from Aldus, controls the TIFF specification.

TIFF was originally designed to achieve a common and unified scan image file format for desktop scanner vendors in the mid-1980s, rather than each vendor using its own proprietary format. In the beginning, TIFF was just a binary image format, because desktop scanners at that time could only handle this format, and as the scanner became more and more powerful and the computer had more and more disk space, TIFF gradually supported grayscale and color images.

Overview of structure

The TIFF file has a .tif extension. Its data format is a three-level architecture, and the internal structure of Ti can be divided into three parts: file header information area, identification information area and image data area. All the tags are arranged in ascending order, and the tag information is used to process the image information in the file.

File header

The first data structure in each TIFF file is called the image file header or IFH, which is the highest level of the image file architecture. This structure is unique in an TIFF file and has a fixed location. It is at the beginning of the file and contains the necessary information to interpret the rest of the TIFF file correctly.

File directory

IFD is the second data structure in the TIFF file. It is a table called tag that distinguishes one or more variable-length data blocks. The tag contains all the information about the image. IFD provides a series of pointers (indexes) that tell us the starting position of various relevant data fields in the file, and the data type and length of each field. This approach allows data fields to be located anywhere in the file and can be of any length, so the file format is very flexible.

Image data

According to the address pointed to by the IFD, the relevant image information is stored.

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