Title :
Detection of blocking artifacts of compressed still images
Author :
Triantafyllidis, G.A. ; Tzovaras, D. ; Strintzis, M.G.
Author_Institution :
Informatics & Telematics Inst., Thermi, Greece
Abstract :
A novel frequency domain technique for image blocking artifact detection is presented. The algorithm detects the regions of the image which present visible blocking artifacts. This detection is performed in the frequency domain and uses the estimated relative quantization error calculated when the DCT coefficients are modeled by a Laplacian probability function. Experimental results illustrating the performance of the proposed method are presented and evaluated
Keywords :
Laplace transforms; data compression; discrete cosine transforms; frequency-domain analysis; image coding; probability; quantisation (signal); transform coding; DCT coefficients; Laplacian probability function; blocking artifact detection; compressed still images; estimated relative quantization error; frequency domain technique; image regions; performance; Decoding; Discrete cosine transforms; Frequency domain analysis; Image coding; Informatics; Laplace equations; Pixel; Quantization; Telematics; Transform coding;
Conference_Titel :
Image Analysis and Processing, 2001. Proceedings. 11th International Conference on
Conference_Location :
Palermo
Print_ISBN :
0-7695-1183-X
DOI :
10.1109/ICIAP.2001.957077
