A novel dct architecture for quality and power efficient
Bo-Shiuan Lin, Chiu-Chin Sung, Shanq-Jang Ruan, Mon-Chau Shie · 2005
Summary form only given. In recent years, the demand for multimedia mobile battery-operated devices has created a need for low power implementation of video compression. Many video compression standards require the discrete cosine transform (DCT) function to perform image/video compression. For this reason, low power DCT design has become more and more important in today's image/video processing. This paper presents a new power-efficient hybrid DCT architecture which combines Loeffler DCT and binDCT in terms of a special property of luminance and chrominance difference. We use Synopsys PrimePower to estimate the power consumption in a TSMC 0.25-/spl mu/m technology. Besides, we also adopt a novel assessment method based on structural distortion measurement to measure the video quality instead of peak signal to noise ratios (PSNR) and mean squared error (MSE). It is concluded that our hybrid DCT offers similar video quality performance to the Loeffler, and leads to 18% power consumption and 27% chip area savings.