Title :
Design of matrix second-order differentiator for image sharpening using discrete sine transform
Author :
Su-Ling Lee ; Chien-Cheng Tseng
Author_Institution :
Chang Jung Christian Univ., Tainan, Taiwan
Abstract :
In this paper, the design of matrix second-order differentiator (SOD) using discrete sine transform (DST) is presented. First, the design problem of matrix filter is described. Then, the DST is applied to obtain the closed-form transfer matrix of the matrix SOD. Next, the designed matrix SOD is used to develop an image sharpening algorithm by using Laplacian operator. Finally, the performance of the proposed matrix SOD is evaluated through numerical examples.
Keywords :
discrete transforms; filtering theory; image processing; matrix algebra; DST; Laplacian operator; SOD; closed-form transfer matrix; discrete sine transform; image sharpening algorithm; matrix filter; matrix second-order differentiator; Band-pass filters; Color; Finite impulse response filters; Frequency response; Laplace equations; Transforms;
Conference_Titel :
Consumer Electronics - Taiwan (ICCE-TW), 2015 IEEE International Conference on
Conference_Location :
Taipei
DOI :
10.1109/ICCE-TW.2015.7216919
