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Image blockiness evaluation based on Sobel operator

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3 Author(s)
Perra, C. ; Dept. of Electr. & Electron. Eng., Cagliari Univ., Italy ; Massidda, F. ; Giusto, D.D.

This paper presents a novel no-reference image blockiness index which exploits the properties of the Sobel operator. The blockiness index is a combination of two measures. The first quantifies the luminance variation of block boundaries pixels. The second quantifies the luminance variation of remaining pixels. Experimental results illustrating the performance of the proposed method show improvements over similar recently published methods.

Published in:

Image Processing, 2005. ICIP 2005. IEEE International Conference on  (Volume:1 )

Date of Conference:

11-14 Sept. 2005