| 摘要 |
PURPOSE:To perform efficient adaptive forecasting encoding by comparing levels of the picture element of the previous frame and that of existing frame and numerically expressing the difference. CONSTITUTION:The levels of the picture element of the previous frame and that of existing frame of television signals are compared and degree of the difference is divided into >=3 groups. Degrees having small difference are seperated into small groups and those having large difference are seperated into large groups. Then, one value is given to respective group according to the magnitude. That is to say, small values are given to small groups and large values are given to large groups. In this way, the numerically expressed values are integrated for picture elements within each block to obtain the evaluated values. Encoding is performed by obtaining optimum forecasting signal based on the evaluated values. Therefore, efficient adaptive forecasting encoding can be performed. |
