An HDTV codec based on DCT plus motion-compensated prediction at a bitrate of 135 Mb/s is now being developed. The hardware prototype will be completed soon. This paper describes the specification and the configuration of the codec.
This paper describes experimental EDTV system with high quality wide aspect image and digital audio. This system sends wide aspect images by leter box method , a vertical-temporal augmentation signal in the top and botom panels, a higher resolution component embeded on "Hole", and digital audio signals by RF-QAM ( Radio Frequency Quadrature Amplitude Modulation). Experimental results show that crosstalk between video and audio signals is negligibly small and disturbances on existing sets are tolerable.
We propose a new motion adaptive YC separation processing that consists of a median processing added to the conventional motion adaptive YC separation. In this median processing, the one of three kinds of field-comb filters is selected adaptively according to the correlation of the moving pictures. In this paper, we prove some effects ofthe median processing on the computer simulations.
we developed the Image enhancement system at 2 Dimentional frequancy reajon. It enhances the middle and high frequency at 2D. Recently, we developed new method that is level adaptive system. we will introduce this system.