| 摘要 |
PURPOSE:To satisfactorily process a picture in a target area by permitting a correction circuit to correct a projecting magnification error resulting from the movement of the focusing part of the projecting lens of viewer and CCD systems at the time of focal point adjustment. CONSTITUTION:A picture 2 illuminated by an illuminating means 1 is projected onto a screen part 5, which has the function of a digitizer 6, by a first projecting system 4, which has a focusing function; the picture 2 is also projected onto a picture processing part 8, which has a picture reading function, by a second projecting system 7, which has a focusing function. To process the picture in a picture processing part 8 based on an input signal inputted from the digitizer 6, the correction circuit 11 corrects a projection magnification error caused when each focusing function adjusts a corresponding image forming condition of when the picture 2 is projected on the screen part 5 and the picture processing part 8; and the signal from the correction circuit 11 is inputted to the picture processing part 8. Thus, a picture in the target are can be always satisfactorily processed. |
