| 摘要 |
PURPOSE:To effectively edge-correct images whose resolution feeling is degraded in the case of obtaining high magnification images by emphasizing the edge part of the images by a variable difference circuit, varying a difference width corresponding to a magnification rate and varying the characteristics of an emphasizing processing. CONSTITUTION:Video images optically inputted from a lens 1 are turned to electric signals by a CCD2, a signal processing is performed in an image pickup signal processing circuit 3 and analog signals are outputted. The output of the circuit 3 is AD converted in an ADC4 and written in the address of a frame memory 5 specified by a write address controller 10. Then, a read address controller 11 is controlled by a tele/wide changeover switch 12 and a magnification generator 13 and read from the address specified by the read address controller 11 is performed. For read data, inter-pixel data are interpolated in an interpolation circuit 6, the emphasizing processing of an edge is performed in an edge emphasizing processing circuit 7, DA conversion is performed in a DAC8 and recording is performed by a recording circuit 9. |
