Method and device for converting TIF (Tagged Image File) format file

Abstract

The invention provides a method and a device for converting a TIF (Tagged Image File) format file. The method comprises the following steps of: converting a document to be converted into a bitmap file; adjusting the color scale of the bitmap file to generate a gray level image; and performing binary processing on the gray level image, and converting into a TIF format file. In the invention, a binary conversion algorithm based on a pixel integrated value is adopted, so that the stereovision of a finally-generated picture can be increased greatly; after an image expressing figures or scenes is converted by adopting the scheme of the invention, the profile of the image can be described, and the details of the image can be described clearly; and by adopting an automatic color scale adjusting scheme, light-color parts of scanning pieces and the like can be corrected automatically, and the definition of a finally-generated picture is increased. The method and the device can be widely applied to the field of fax servers for transmitting on the dependence of the TIF format and the field of document conversion in which TIF is taken as a storage format, and the definition of a converted document is increased.

Description

technical field [0001] The invention relates to document format conversion technology, in particular to a method and device for converting TIF format files (standard fax file format) documents. Background technique [0002] At present, with the rapid development of IT technology, enterprise informatization is becoming more and more popular, and computer documents and data formats are becoming more and more abundant. Among them, TIF format files have the advantages of small space occupation, strong flexibility and adaptability, and simple image data exchange. Advantage, often suitable for exchanging files between applications and between computer platforms, is a standard format in document image and document management systems. In computer application systems, TIF format files are often used in fax servers and document storage systems. [0003] Usually, the method of converting documents in other formats into TIF format files is as follows: first, print the documents to be c...

AI Technical Summary

Problems solved by technology

[0004] 1. Using a conversion algorithm based on brightness threshold, this algorithm will cause the layering of the picture to disappear;

[0005] 2. The details of text and pictures are blurred, and documents with lighter colors (such as scanned files) are light after conversion;

[0006] 3. At the same time, it provides a variety of algorithms but cannot adaptively input documents (the user needs to manually select the document type as text-based or image-based, and the user needs to set an appropriate brightness threshold according to the document type)

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