2. An image editor according to claim 1, wherein said photoelectric transformation means has analogue to digital conversion means for converting electric signals received thereby to digital signals, comparator means for comparing each digital signal with a predetermined threshold values and means for selecting the threshold value to be sent to the comparator means from a threshold value set for a bi-level processing and for a half-tone processing according to the attribute data stored in the attribute memory means.
1. An image editor for editing and processing image data according to attributes designated thereabout comprising: photo-electric transformation means for transforming an optical image into electric signals for individual pixels thereof; attribute memory means for storing attributes for indicating a processing method of an image signal for every unit of virtual area on an image area of a document, said virtual area being defined for each unit as one of the areas obtained by dividing the image area of a document regularly so as to have a larger area than that of one pixel; attribute designation means for indicating an attribute of each unit of virtual area to said attribute memory means; image signal processing means for processing an output signal from an individual pixel of said photo-electric transformation means according to attribute data stored in said attribute memory means of a corresponding unit of virtual area in which said pixel is included.