| 摘要 |
PURPOSE:To simply attain a high speed process by outputting a code regarding an observation direction assigned by a density string encoding part, and outputting the variable density structure information of a remarked picture element from a variable density structure information output part setting the code string as an input. CONSTITUTION:A multivalue density digital signal from a scanning and photoelectric transducing part 1, after it is stored temporarily at a multi-gradation picture storage part 2, is given to a density string output part 3. The density string output part 3 reads out the density signal of each picture element within a picture element area of 3X3 centering an optical remarked picture, and outputs picture element density strings regarding four observation directions. Density string encoding parts 4a-4d input the picture element density string classified at every observation direction obtained respectively from the density string output part 3, and output a density state after encoding. These four codes classified by every direction are given to a variable density structure information output part 5 and the density structure information of the remarked picture element is outputted. |
