| 摘要 |
PURPOSE:To reduce information by providing a space filter on the front stage of an encoding, controlling a resolution according to the moving amounts of an input dynamic image signal, and suppressing a visual deterioration to the minimum. CONSTITUTION:This system is equipped with a two-dimensional space filter 10 which controls the spatial resolution of an input dynamic image signal (a) according to moving amounts (n), and outputs a picture signal (b), and a subtracter 1 which outputs a between-frame difference signal (c) between the picture signal (b) and a movement-compensated picture signal (m). And also, the system is equipped with an orthogonal transformation device 2 and a quantizer 3 which input the between-frame difference signal (c), and output a quantized signal (e) whose information amounts are compressed, movement detector 9 which inputs the input dynamic image signal (a) and a signal (t) obtained by inverse- quantizing and transforming the quantized signal (e), outputs the moving amounts (n), and transmits it to the two-dimensional filter 10, and variable memory 8 which outputs the picture signal (m), and transmits it to the subtracter 1. |
