A Study of Digital Image Enlargement and Enhancement. (28th April 2014)

• Record Type: Journal Article
• Authors: Lin, Hsueh-Yi; Lin, Chi-Yuan; Lin, Cheng-Jian; Yang, Sheng-Chih; Yu, Cheng-Yi
• Other Names: Yau Her-Terng Academic Editor.
• Is Part Of: Mathematical problems in engineering. Volume 2014(2014)
• Publication Date: 2014-04-28
• Subjects: Engineering mathematics -- Periodicals; 510.2462
• DOI: 10.1155/2014/825169
• Languages: English
• ISSNs: 1024-123X

Abstract

Abstract : Most image enlargement techniques suffer the problem of zigzagged edges and jagged images following enlargement. Humans are sensitive to the edges of objects; if the edges in the image are sharp, the visual is considered to be high quality. To solve this problem, this paper presents a new and effective method for image enlargement and enhancement based on adaptive inverse hyperbolic tangent (AIHT) algorithm. Conventional image enlargement and enhancement methods enlarge the image using interpolation, and subsequently enhance the image without considering image features. However, this study presents the method based on Adaptive Inverse Hyperbolic Tangent algorithm to enhance images according to image features before enlarging the image. Experimental results indicate that the proposed algorithm is capable of adaptively enhancing the image and extruding object details, thereby improving enlargements by smoothing the edge of the objects in the image.