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Yayın 3-D Mesh geometry compression with set partitioning in the spectral domain(IEEE-INST Electrical Electronics Engineers Inc, 2010-02) Bayazıt, Uluğ; Konur, Umut; Ateş, Hasan FehmiThis paper explains the development of a highly efficient progressive 3-D mesh geometry coder based on the region adaptive transform in the spectral mesh compression method. A hierarchical set partitioning technique, originally proposed for the efficient compression of wavelet transform coefficients in high-performance wavelet-based image coding methods, is proposed for the efficient compression of the coefficients of this transform. Experiments confirm that the proposed coder employing such a region adaptive transform has a high compression performance rarely achieved by other state of the art 3-D mesh geometry compression algorithms. A new, high-performance fixed spectral basis method is also proposed for reducing the computational complexity of the transform. Many-to-one mappings are employed to relate the coded irregular mesh region to a regular mesh whose basis is used. To prevent loss of compression performance due to the low-pass nature of such mappings, transitions are made from transform-based coding to spatial coding on a per region basis at high coding rates. Experimental results show the performance advantage of the newly proposed fixed spectral basis method over the original fixed spectral basis method in the literature that employs one-to-one mappings.Yayın The relation between infographic and visual literacy(ITICAM, 2018-07) Uyan Dur, Banu İnançThe developments in communication technology didn’t only affect the visible side of life but also transformed the ways of thinking, perception and interpretation. The form of communication through visuals is accepted to be the reality of today. On the other hand, the digital evolution due to the advances in technology has had the advantage of ever increasing flow of data and information. Therefore, processing the intense, unorganized and complex data to transform them into meaningful and useful datasets has become an area gaining more importance. Making information more understandable for wider audience requires the presentation of data through systematic visualization. Therefore, infographics have become an element that is used more frequently in every media. Infographics fulfil a very important need in this age by presenting the information and data that increases due to technological developments through an understanding focusing on functionality and aesthetics where visual communication is in the center. In understanding infographics, the visual literacy level of the user is a factor that is as important as the quality of the design. This article examines the relation of visual literacy with the process of reading, perceiving and interpreting the infographics.
