Title :
Research on DCT-based image compression quality
Author_Institution :
Dept. of Comput. & Inf. Technol., Northeast Pet. Univ., Daqing, China
Abstract :
The DCT-based image compression quality is studied by experiments in the subjective and the objective two evaluation methods in the paper. At first, the DCT coefficients option is important to affect the static image compression quality, the option method of DCT coefficients is illustrated. Next, according the experiments data and simulation images, in the objective evaluation method, by computing the MSE and PSNR, the different DCT image coding bit rate how to affect the compression image quality is further analyzed, the result indicates: the bit rate of less than 0.75bbp is the most applicable for the good image compression quality.
Keywords :
data compression; discrete cosine transforms; image coding; mean square error methods; DCT coefficient; DCT image coding; DCT-based image compression quality; objective evaluation method; simulation image; Discrete cosine transforms; Image coding; PSNR; Quantization; DCT; Image Compression quality; MSE; PSNR; bit rate; coefficients option;
Conference_Titel :
Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2011
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-9792-8
DOI :
10.1109/CSQRWC.2011.6037249
