A Kind of Sub-Pixel Grid Characters Thickness Adjustment Method

Shu Hua Liu; Ping Li Li; Meng You Yuan; Hong Zhi Zhang

doi:10.4028/www.scientific.net/AMR.174.118

Paper Titles

Research on Dynamic Subspace Divided BP Neural Network Identification Method of Color Space Transform Model
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The Application of Color Management in the Process of Making Electronic Engraved Plate
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Image Relief Algorithm and its Application in Security Printing
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A Technology of Printing Forgery Prevention for Certificates Based on Fingerprint Information
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A Kind of Sub-Pixel Grid Characters Thickness Adjustment Method
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A HDR Image Compression Algorithm Based on Non-Linear Masking
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A Study of Digital Watermark Algorithm Based on HVS for Halftone Images
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Generation of High Dynamic Range Image Based on Tone Composition of Multiple Images for Identical Scene
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Study of Image Frequency Spectrum under the Different Settings of USM Parameters
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 174A Kind of Sub-Pixel Grid Characters Thickness...

A Kind of Sub-Pixel Grid Characters Thickness Adjustment Method

Abstract:

In order to ensure printing quality of text content in raster image, we usually need to adjust the thickness of characters in the pre-press. This paper presents a sub-pixel adjustment method, based on analysis of characters’ neighborhood pixel information, so that we can control the scope and direction of the adjustment. In our method, Image is considered as a combined result of a foreground character layer and a background image layer. By performing the steps of separating characters from background, calculating ink density of each pixel of characters, adjusting each pixel’s ink density by analysis of neighborhood stroke shape, we achieve a result so fine that could simulate the effects performed by vector methods. The method can be adapted to global or any certain direction (e.g. vertical, horizontal, diagonal, etc) thickness adjustment. Experimental results show that the method can achieve excellent results and is proved to be very practical.