1. A full-zone optical image addressing apparatus, suitable for use in a scanner which comprises a driver motor and a guiding device, the full-zone optical image addressing apparatus comprising: an addressing device, comprising a plurality of geometric patterns located on an enclosure of the scanner, wherein the geometric patterns have a color scale different from a background color of the enclosure, each of the geometric patterns comprises a plurality of rows of pixels, and each row of pixels includes a number of pixels variable along a moving direction of the guiding device; an image extraction converter, extracting one of the rows of pixels and converting the row of pixels into a series of analog signals upon reception of an exposure signal; a comparator, connected to the image extraction converter to output a series of analog comparison signals according to a comparison between a critical voltage value and the series of analog comparison signals; an AND gate circuit, connected to the comparator to synchronously process the series of analog comparison signals and a pixel rate pulse, so as to output a plurality of pixel values corresponding to the extracted row of pixels; and a counter, connected to the AND gate circuit to receive the pixel values to calculate and output the row of pixels including the number of the pixels contained therein and the geometric pattern at which the row of pixels is located.