Digital image four-dimension conversion method

A digital image and conversion method technology, applied in image communication, printing, printing plate preparation, etc., can solve the problems of inability to guarantee the consistency of color data information standards, large loss of color accuracy, and impact on accuracy, so as to reduce manual processing errors Opportunities, avoiding loss of information, and ensuring relative independence
CN104270551AActive Publication Date: 2015-01-07北京市文化科技融资租赁股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
北京市文化科技融资租赁股份有限公司
Publication Date
2015-01-07

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Abstract

The invention particularly relates to a digital image four-dimension conversion method and belongs to the field of digital image processing. The method includes the steps of creating a conversion relationship according to conversion target characteristic files, creating an image conversion data correspondence table according to the conversion relationship, carrying out color classification and color conversion on the image conversion data correspondence table, and carrying out matching on conversion digital image files on the converted image conversion data correspondence table. Compared with the prior art, the digital image four-dimension conversion method has the advantages that an intermediate junction color space does not need to be passed through due to the color matching mode that a source color space is directly converted to a target color space, image information losses are avoided in the color conversion process, and a more ideal recovery capacity is provided; color space conversion and color mode conversion are carried out on images in batches by means of the data correspondence table, converted images are saved in the same folder, relative independence of data is ensured, convenience and rapidness are achieved, and the chance of errors caused by manual processing in the preprinting process is reduced.
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Description

technical field

[0001] The invention specifically relates to a four-dimensional conversion method for digital images, which belongs to the technical field of digital printing. Background technique

[0002] Currently, the commonly used image conversion method in the market is to perform color separation and color conversion between related color spaces through Photoshop. The basic principle of Photoshop conversion is a working method from CMYK space to Lab space and then to CMYK space through ICC characteristic files, from CMYK four-dimensional color space to Lab three-dimensional color space, and then to CMYK four-dimensional color space. Four mapping methods, such as relative value, absolute value, saturation, and vision, can be used during conversion.

[0003] However, the traditional ICC color profile conversion method uses an intermediate connection color space (PCS) as a bridge to convert between the two spaces. This method has the following limitations:

[0004] From...

Claims

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