| 摘要 |
PURPOSE:To discriminate whether an existence area of an object exists or not, to eliminate the need of separating the object from a background, and to simply decide whether the existence area of the object exists or not by deriving the total density sum in a partial area simultaneously with an image scan. CONSTITUTION:When an object 14 is an image of a segment indicator such as a liquid crystal display, it becomes a small value since it is dark as density data. Accordingly, the total density sum of a partial area 10 becomes lower than the time when a liquid crystal is not in a display state. In such a way, the total density sum at the time when the object 14 exists is stored at every partial area 10a - 10g, and with regard to an unknown object 14, the density sum of every partial area 10a - 10g is compared by a density sum comparing means 18, and as a result, whether the object 14 exists or not is decided in an in-partial area object existence deciding means 19, and in an object shape deciding means 20, and object shape is decided. Whether the object 14 exists or not can be decided without deriving, for instance, a size of the object 14, etc., by separating the object 14 from a background. |
